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KCNQ1_HUMAN
ID   KCNQ1_HUMAN             Reviewed;         676 AA.
AC   P51787; O00347; O60607; O94787; Q14D14; Q7Z6G9; Q92960; Q9UMN8; Q9UMN9;
DT   01-OCT-1996, integrated into UniProtKB/Swiss-Prot.
DT   15-JUL-1999, sequence version 3.
DT   03-AUG-2022, entry version 225.
DE   RecName: Full=Potassium voltage-gated channel subfamily KQT member 1 {ECO:0000305};
DE   AltName: Full=IKs producing slow voltage-gated potassium channel subunit alpha KvLQT1 {ECO:0000305|PubMed:9312006};
DE   AltName: Full=KQT-like 1 {ECO:0000305};
DE   AltName: Full=Voltage-gated potassium channel subunit Kv7.1 {ECO:0000305|PubMed:20533308};
GN   Name=KCNQ1 {ECO:0000312|HGNC:HGNC:6294};
GN   Synonyms=KCNA8 {ECO:0000312|HGNC:HGNC:6294},
GN   KCNA9 {ECO:0000312|HGNC:HGNC:6294}, KVLQT1 {ECO:0000303|PubMed:9312006};
OS   Homo sapiens (Human).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC   Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae;
OC   Homo.
OX   NCBI_TaxID=9606;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1), FUNCTION, AND CHARACTERIZATION OF
RP   VARIANT LQT1 CYS-555.
RC   TISSUE=Kidney;
RX   PubMed=9312006; DOI=10.1093/emboj/16.17.5472;
RA   Chouabe C., Neyroud N., Guicheney P., Lazdunski M., Romey G., Barhanin J.;
RT   "Properties of KvLQT1 K+ channel mutations in Romano-Ward and Jervell and
RT   Lange-Nielsen inherited cardiac arrhythmias.";
RL   EMBO J. 16:5472-5479(1997).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2), AND FUNCTION (ISOFORM 2).
RC   TISSUE=Heart;
RX   PubMed=9305853; DOI=10.1074/jbc.272.39.24109;
RA   Jiang M., Tseng-Crank J., Tseng G.-N.;
RT   "Suppression of slow delayed rectifier current by a truncated isoform of
RT   KvLQT1 cloned from normal human heart.";
RL   J. Biol. Chem. 272:24109-24112(1997).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA] (ISOFORMS 1 AND 2), VARIANTS LQT1
RP   ASN-242; HIS-250; SER-314 AND MET-587, AND VARIANT SER-643.
RX   PubMed=9799083; DOI=10.1007/s004390050819;
RA   Itoh T., Tanaka T., Nagai R., Kikuchi K., Ogawa S., Okada S., Yamagata S.,
RA   Yano K., Yazaki Y., Nakamura Y.;
RT   "Genomic organization and mutational analysis of KVLQT1, a gene responsible
RT   for familial long QT syndrome.";
RL   Hum. Genet. 103:290-294(1998).
RN   [4]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA] (ISOFORMS 1 AND 2), AND VARIANTS LQT1
RP   MET-587 AND HIS-591.
RX   PubMed=10024302; DOI=10.1161/01.res.84.3.290;
RA   Neyroud N., Richard P., Vignier N., Donger C., Denjoy I., Demay L.,
RA   Shkolnikova M., Pesce R., Chevalier P., Hainque B., Coumel P., Schwartz K.,
RA   Guicheney P.;
RT   "Genomic organization of the KCNQ1 K+ channel gene and identification of C-
RT   terminal mutations in the long-QT syndrome.";
RL   Circ. Res. 84:290-297(1999).
RN   [5]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   TISSUE=Heart;
RA   Seebohm G.;
RL   Submitted (MAY-2002) to the EMBL/GenBank/DDBJ databases.
RN   [6]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 2).
RC   TISSUE=Heart;
RX   PubMed=14702039; DOI=10.1038/ng1285;
RA   Ota T., Suzuki Y., Nishikawa T., Otsuki T., Sugiyama T., Irie R.,
RA   Wakamatsu A., Hayashi K., Sato H., Nagai K., Kimura K., Makita H.,
RA   Sekine M., Obayashi M., Nishi T., Shibahara T., Tanaka T., Ishii S.,
RA   Yamamoto J., Saito K., Kawai Y., Isono Y., Nakamura Y., Nagahari K.,
RA   Murakami K., Yasuda T., Iwayanagi T., Wagatsuma M., Shiratori A., Sudo H.,
RA   Hosoiri T., Kaku Y., Kodaira H., Kondo H., Sugawara M., Takahashi M.,
RA   Kanda K., Yokoi T., Furuya T., Kikkawa E., Omura Y., Abe K., Kamihara K.,
RA   Katsuta N., Sato K., Tanikawa M., Yamazaki M., Ninomiya K., Ishibashi T.,
RA   Yamashita H., Murakawa K., Fujimori K., Tanai H., Kimata M., Watanabe M.,
RA   Hiraoka S., Chiba Y., Ishida S., Ono Y., Takiguchi S., Watanabe S.,
RA   Yosida M., Hotuta T., Kusano J., Kanehori K., Takahashi-Fujii A., Hara H.,
RA   Tanase T.-O., Nomura Y., Togiya S., Komai F., Hara R., Takeuchi K.,
RA   Arita M., Imose N., Musashino K., Yuuki H., Oshima A., Sasaki N.,
RA   Aotsuka S., Yoshikawa Y., Matsunawa H., Ichihara T., Shiohata N., Sano S.,
RA   Moriya S., Momiyama H., Satoh N., Takami S., Terashima Y., Suzuki O.,
RA   Nakagawa S., Senoh A., Mizoguchi H., Goto Y., Shimizu F., Wakebe H.,
RA   Hishigaki H., Watanabe T., Sugiyama A., Takemoto M., Kawakami B.,
RA   Yamazaki M., Watanabe K., Kumagai A., Itakura S., Fukuzumi Y., Fujimori Y.,
RA   Komiyama M., Tashiro H., Tanigami A., Fujiwara T., Ono T., Yamada K.,
RA   Fujii Y., Ozaki K., Hirao M., Ohmori Y., Kawabata A., Hikiji T.,
RA   Kobatake N., Inagaki H., Ikema Y., Okamoto S., Okitani R., Kawakami T.,
RA   Noguchi S., Itoh T., Shigeta K., Senba T., Matsumura K., Nakajima Y.,
RA   Mizuno T., Morinaga M., Sasaki M., Togashi T., Oyama M., Hata H.,
RA   Watanabe M., Komatsu T., Mizushima-Sugano J., Satoh T., Shirai Y.,
RA   Takahashi Y., Nakagawa K., Okumura K., Nagase T., Nomura N., Kikuchi H.,
RA   Masuho Y., Yamashita R., Nakai K., Yada T., Nakamura Y., Ohara O.,
RA   Isogai T., Sugano S.;
RT   "Complete sequencing and characterization of 21,243 full-length human
RT   cDNAs.";
RL   Nat. Genet. 36:40-45(2004).
RN   [7]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=16554811; DOI=10.1038/nature04632;
RA   Taylor T.D., Noguchi H., Totoki Y., Toyoda A., Kuroki Y., Dewar K.,
RA   Lloyd C., Itoh T., Takeda T., Kim D.-W., She X., Barlow K.F., Bloom T.,
RA   Bruford E., Chang J.L., Cuomo C.A., Eichler E., FitzGerald M.G.,
RA   Jaffe D.B., LaButti K., Nicol R., Park H.-S., Seaman C., Sougnez C.,
RA   Yang X., Zimmer A.R., Zody M.C., Birren B.W., Nusbaum C., Fujiyama A.,
RA   Hattori M., Rogers J., Lander E.S., Sakaki Y.;
RT   "Human chromosome 11 DNA sequence and analysis including novel gene
RT   identification.";
RL   Nature 440:497-500(2006).
RN   [8]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RA   Mural R.J., Istrail S., Sutton G., Florea L., Halpern A.L., Mobarry C.M.,
RA   Lippert R., Walenz B., Shatkay H., Dew I., Miller J.R., Flanigan M.J.,
RA   Edwards N.J., Bolanos R., Fasulo D., Halldorsson B.V., Hannenhalli S.,
RA   Turner R., Yooseph S., Lu F., Nusskern D.R., Shue B.C., Zheng X.H.,
RA   Zhong F., Delcher A.L., Huson D.H., Kravitz S.A., Mouchard L., Reinert K.,
RA   Remington K.A., Clark A.G., Waterman M.S., Eichler E.E., Adams M.D.,
RA   Hunkapiller M.W., Myers E.W., Venter J.C.;
RL   Submitted (JUL-2005) to the EMBL/GenBank/DDBJ databases.
RN   [9]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 2).
RX   PubMed=15489334; DOI=10.1101/gr.2596504;
RG   The MGC Project Team;
RT   "The status, quality, and expansion of the NIH full-length cDNA project:
RT   the Mammalian Gene Collection (MGC).";
RL   Genome Res. 14:2121-2127(2004).
RN   [10]
RP   NUCLEOTIDE SEQUENCE [MRNA] OF 1-129, AND FUNCTION.
RX   PubMed=9108097; DOI=10.1073/pnas.94.8.4017;
RA   Yang W.-P., Levesque P.C., Little W.A., Conder M.L., Shalaby F.Y.,
RA   Blanar M.A.;
RT   "KvLQT1, a voltage-gated potassium channel responsible for human cardiac
RT   arrhythmias.";
RL   Proc. Natl. Acad. Sci. U.S.A. 94:4017-4021(1997).
RN   [11]
RP   NUCLEOTIDE SEQUENCE [MRNA] OF 107-676, AND FUNCTION.
RC   TISSUE=Pancreas;
RX   PubMed=8900283; DOI=10.1038/384080a0;
RA   Sanguinetti M.C., Curran M.E., Zou A., Shen J., Spector P.S.,
RA   Atkinson D.L., Keating M.T.;
RT   "Coassembly of K(V)LQT1 and minK (IsK) proteins to form cardiac I(Ks)
RT   potassium channel.";
RL   Nature 384:80-83(1996).
RN   [12]
RP   NUCLEOTIDE SEQUENCE [MRNA] OF 130-676, AND VARIANTS LQT1.
RX   PubMed=8528244; DOI=10.1038/ng0196-17;
RA   Wang Q., Curran M.E., Splawski I., Burn T.C., Millholland J.M.,
RA   Vanraay T.J., Shen J., Timothy K.W., Vincent G.M., de Jager T.,
RA   Schwartz P.J., Towbin J.A., Moss A.J., Atkinson D.L., Landes G.M.,
RA   Connors T.D., Keating M.T.;
RT   "Positional cloning of a novel potassium channel gene: KVLQT1 mutations
RT   cause cardiac arrhythmias.";
RL   Nat. Genet. 12:17-23(1996).
RN   [13]
RP   IDENTIFICATION OF C-TERMINAL ASSEMBLY DOMAIN.
RX   PubMed=10654932; DOI=10.1093/emboj/19.3.332;
RA   Schmitt N., Schwarz M., Peretz A., Abitbol I., Attali B., Pongs O.;
RT   "A recessive C-terminal Jervell and Lange-Nielsen mutation of the KCNQ1
RT   channel impairs subunit assembly.";
RL   EMBO J. 19:332-340(2000).
RN   [14]
RP   INTERACTION WITH KCNE2, AND FUNCTION.
RX   PubMed=11101505; DOI=10.1093/emboj/19.23.6326;
RA   Tinel N., Diochot S., Borsotto M., Lazdunski M., Barhanin J.;
RT   "KCNE2 confers background current characteristics to the cardiac KCNQ1
RT   potassium channel.";
RL   EMBO J. 19:6326-6330(2000).
RN   [15]
RP   FUNCTION.
RX   PubMed=10713961; DOI=10.1111/j.1469-7793.2000.t01-2-00349.x;
RA   Selyanko A.A., Hadley J.K., Wood I.C., Abogadie F.C., Jentsch T.J.,
RA   Brown D.A.;
RT   "Inhibition of KCNQ1-4 potassium channels expressed in mammalian cells via
RT   M1 muscarinic acetylcholine receptors.";
RL   J. Physiol. (Lond.) 522:349-355(2000).
RN   [16]
RP   FUNCTION, AND SUBCELLULAR LOCATION.
RX   PubMed=10646604; DOI=10.1038/35003200;
RA   Schroeder B.C., Waldegger S., Fehr S., Bleich M., Warth R., Greger R.,
RA   Jentsch T.J.;
RT   "A constitutively open potassium channel formed by KCNQ1 and KCNE3.";
RL   Nature 403:196-199(2000).
RN   [17]
RP   FUNCTION.
RX   PubMed=12324418; DOI=10.1016/s0006-3495(02)73961-1;
RA   Angelo K., Jespersen T., Grunnet M., Nielsen M.S., Klaerke D.A.,
RA   Olesen S.P.;
RT   "KCNE5 induces time- and voltage-dependent modulation of the KCNQ1
RT   current.";
RL   Biophys. J. 83:1997-2006(2002).
RN   [18]
RP   INTERACTION WITH AKAP9, PHOSPHORYLATION AT SER-27, CHARACTERIZATION OF
RP   VARIANT LQT1 ASP-589, AND MUTAGENESIS OF SER-27; LEU-602 AND ILE-609.
RX   PubMed=11799244; DOI=10.1126/science.1066843;
RA   Marx S.O., Kurokawa J., Reiken S., Motoike H., D'Armiento J., Marks A.R.,
RA   Kass R.S.;
RT   "Requirement of a macromolecular signaling complex for beta adrenergic
RT   receptor modulation of the KCNQ1-KCNE1 potassium channel.";
RL   Science 295:496-499(2002).
RN   [19]
RP   FUNCTION, DOMAIN, INTERACTION WITH KCNE4, AND MUTAGENESIS OF VAL-324;
RP   LYS-326; THR-327; ILE-328; SER-338 AND PHE-340.
RX   PubMed=19687231; DOI=10.1085/jgp.200910234;
RA   Vanoye C.G., Welch R.C., Daniels M.A., Manderfield L.J., Tapper A.R.,
RA   Sanders C.R., George A.L. Jr.;
RT   "Distinct subdomains of the KCNQ1 S6 segment determine channel modulation
RT   by different KCNE subunits.";
RL   J. Gen. Physiol. 134:207-217(2009).
RN   [20]
RP   SUBCELLULAR LOCATION, AND INTERACTION WITH KCNE1; KCNE2; KCNE3; KCNE4 AND
RP   KCNE5.
RX   PubMed=20533308; DOI=10.1002/jcp.22265;
RA   Roura-Ferrer M., Sole L., Oliveras A., Dahan R., Bielanska J.,
RA   Villarroel A., Comes N., Felipe A.;
RT   "Impact of KCNE subunits on KCNQ1 (Kv7.1) channel membrane surface
RT   targeting.";
RL   J. Cell. Physiol. 225:692-700(2010).
RN   [21]
RP   SUBCELLULAR LOCATION.
RX   PubMed=21228319; DOI=10.1152/ajpcell.00390.2010;
RA   Andersen M.N., Olesen S.P., Rasmussen H.B.;
RT   "Kv7.1 surface expression is regulated by epithelial cell polarization.";
RL   Am. J. Physiol. 300:C814-C824(2011).
RN   [22]
RP   INTERACTION WITH NEDD4L AND USP2, UBIQUITINATED, DEUBIQUITINATED, AND
RP   SUBCELLULAR LOCATION.
RX   PubMed=22024150; DOI=10.1016/j.hrthm.2011.10.026;
RA   Krzystanek K., Rasmussen H.B., Grunnet M., Staub O., Olesen S.P.,
RA   Abriel H., Jespersen T.;
RT   "Deubiquitylating enzyme USP2 counteracts Nedd4-2-mediated downregulation
RT   of KCNQ1 potassium channels.";
RL   Heart Rhythm 9:440-448(2012).
RN   [23]
RP   INTERACTION WITH AP2M1 AND NEDD4L, AND SUBCELLULAR LOCATION.
RX   PubMed=23529131; DOI=10.1113/jphysiol.2013.251678;
RA   Rapetti-Mauss R., O'Mahony F., Sepulveda F.V., Urbach V., Harvey B.J.;
RT   "Oestrogen promotes KCNQ1 potassium channel endocytosis and postendocytic
RT   trafficking in colonic epithelium.";
RL   J. Physiol. (Lond.) 591:2813-2831(2013).
RN   [24]
RP   INTERACTION WITH KCNQ5, SUBCELLULAR LOCATION, AND FUNCTION.
RX   PubMed=24855057; DOI=10.1161/atvbaha.114.303801;
RA   Oliveras A., Roura-Ferrer M., Sole L., de la Cruz A., Prieto A.,
RA   Etxebarria A., Manils J., Morales-Cano D., Condom E., Soler C.,
RA   Cogolludo A., Valenzuela C., Villarroel A., Comes N., Felipe A.;
RT   "Functional assembly of Kv7.1/Kv7.5 channels with emerging properties on
RT   vascular muscle physiology.";
RL   Arterioscler. Thromb. Vasc. Biol. 34:1522-1530(2014).
RN   [25]
RP   X-RAY CRYSTALLOGRAPHY (2.0 ANGSTROMS) OF 574-622, INTERACTION WITH CALM,
RP   SUBCELLULAR LOCATION, MUTAGENESIS OF GLY-589; ALA-590 AND ASN-593,
RP   CHARACTERIZATION OF VARIANT LQT1 ASP-589, AND TETRAMERIZATION.
RX   PubMed=18165683; DOI=10.1074/jbc.m707541200;
RA   Wiener R., Haitin Y., Shamgar L., Fernandez-Alonso M.C., Martos A.,
RA   Chomsky-Hecht O., Rivas G., Attali B., Hirsch J.A.;
RT   "The KCNQ1 (Kv7.1) COOH terminus, a multitiered scaffold for subunit
RT   assembly and protein interaction.";
RL   J. Biol. Chem. 283:5815-5830(2008).
RN   [26]
RP   X-RAY CRYSTALLOGRAPHY (1.7 ANGSTROMS) OF 583-611, SUBUNIT, AND COILED-COIL.
RX   PubMed=19693805; DOI=10.1002/pro.224;
RA   Xu Q., Minor D.L. Jr.;
RT   "Crystal structure of a trimeric form of the K(V)7.1 (KCNQ1) A-domain tail
RT   coiled-coil reveals structural plasticity and context dependent changes in
RT   a putative coiled-coil trimerization motif.";
RL   Protein Sci. 18:2100-2114(2009).
RN   [27] {ECO:0007744|PDB:4UMO, ECO:0007744|PDB:4V0C}
RP   X-RAY CRYSTALLOGRAPHY (2.86 ANGSTROMS) OF 352-539 IN COMPLEX WITH CALM AND
RP   CALCIUM, FUNCTION, INTERACTION WITH CALM, DOMAIN, AND MUTAGENESIS OF
RP   ILE-375 AND VAL-516.
RX   PubMed=25441029; DOI=10.1016/j.str.2014.07.016;
RA   Sachyani D., Dvir M., Strulovich R., Tria G., Tobelaim W., Peretz A.,
RA   Pongs O., Svergun D., Attali B., Hirsch J.A.;
RT   "Structural basis of a Kv7.1 potassium channel gating module: studies of
RT   the intracellular c-terminal domain in complex with calmodulin.";
RL   Structure 22:1582-1594(2014).
RN   [28]
RP   CHARACTERIZATION OF VARIANTS LQT1 PRO-178; PHE-273 AND ILE-312.
RX   PubMed=9323054; DOI=10.1161/01.cir.96.6.1733;
RA   Shalaby F.Y., Levesque P.C., Yang W.-P., Little W.A., Conder M.L.,
RA   Jenkins-West T., Blanar M.A.;
RT   "Dominant-negative KvLQT1 mutations underlie the LQT1 form of long QT
RT   syndrome.";
RL   Circulation 96:1733-1736(1997).
RN   [29]
RP   REVIEW ON VARIANTS.
RX   PubMed=10704188;
RX   DOI=10.1002/(sici)1096-8628(19990924)89:3<137::aid-ajmg4>3.0.co;2-c;
RA   Tranebjaerg L., Bathen J., Tyson J., Bitner-Glindzicz M.;
RT   "Jervell and Lange-Nielsen syndrome: a Norwegian perspective.";
RL   Am. J. Med. Genet. 89:137-146(1999).
RN   [30]
RP   VARIANTS LQT1 SER-314 AND VAL-341.
RX   PubMed=8872472; DOI=10.1093/hmg/5.9.1319;
RA   Russell M.W., Dick M. II, Collins F.S., Brody L.C.;
RT   "KVLQT1 mutations in three families with familial or sporadic long QT
RT   syndrome.";
RL   Hum. Mol. Genet. 5:1319-1324(1996).
RN   [31]
RP   VARIANT LQT1 VAL-341.
RX   PubMed=8818942; DOI=10.1136/jmg.33.7.567;
RA   de Jager T., Corbett C.H., Badenhorst J.C., Brink P.A., Corfield V.A.;
RT   "Evidence of a long QT founder gene with varying phenotypic expression in
RT   South African families.";
RL   J. Med. Genet. 33:567-573(1996).
RN   [32]
RP   VARIANTS LQT1 MET-254 AND MET-417.
RA   Wedekind H., Schulze-Bahr E., Lange S., Rubie C., Haverkamp W., Hoerdt M.,
RA   Borggrefe M., Assmann G., Breithardt G., Funke H.;
RT   "A severe form of long-QT syndrome caused by KVLQT1 mutations located in
RT   cis (Abstract #2051).";
RL   Am. J. Hum. Genet. Suppl. 61:A350-A350(1997).
RN   [33]
RP   VARIANTS LQT1 THR-178; MET-313; ARG-325 AND PRO-366.
RX   PubMed=9024139; DOI=10.1161/01.cir.95.3.565;
RA   Tanaka T., Nagai R., Tomoike H., Takata S., Yano K., Yabuta K., Haneda N.,
RA   Nakano O., Shibata A., Sawayama T., Kasai H., Yazaki Y., Nakamura Y.;
RT   "Four novel KVLQT1 and four novel HERG mutations in familial long-QT
RT   syndrome.";
RL   Circulation 95:565-567(1997).
RN   [34]
RP   VARIANTS LQT1.
RX   PubMed=9386136; DOI=10.1161/01.cir.96.9.2778;
RA   Donger C., Denjoy I., Berthet M., Neyroud N., Cruaud C., Bennaceur M.,
RA   Chivoret G., Schwartz K., Coumel P., Guicheney P.;
RT   "KVLQT1 C-terminal missense mutation causes a forme fruste long-QT
RT   syndrome.";
RL   Circulation 96:2778-2781(1997).
RN   [35]
RP   VARIANT LQT1 ARG-216.
RX   PubMed=9272155; DOI=10.1007/s004390050516;
RA   van den Berg M.H., Wilde A.A.M., Robles de Medina E.O., Meyer H.,
RA   Geelen J.L.M.C., Jongbloed R.J.E., Wellens H.J., Geraedts J.P.M.;
RT   "The long QT syndrome: a novel missense mutation in the S6 region of the
RT   KVLQT1 gene.";
RL   Hum. Genet. 100:356-361(1997).
RN   [36]
RP   VARIANT LQT1 ASN-317.
RX   PubMed=9302275; DOI=10.1093/hmg/6.11.1943;
RA   Wollnik B., Schroeder B.C., Kubisch C., Esperer H.D., Wieacker P.,
RA   Jentsch T.J.;
RT   "Pathophysiological mechanisms of dominant and recessive KVLQT1 K+ channel
RT   mutations found in inherited cardiac arrhythmias.";
RL   Hum. Mol. Genet. 6:1943-1949(1997).
RN   [37]
RP   VARIANT LQT1 VAL-341.
RX   PubMed=9570196; DOI=10.1161/01.cir.97.13.1264;
RA   Li H., Chen Q., Moss A.J., Robinson J.L., Goytia V., Perry J.C.,
RA   Vincent G.M., Priori S.G., Lehmann M.H., Denfield S.W., Duff D., Kaine S.,
RA   Shimizu W., Schwartz P.J., Wang Q., Towbin J.A.;
RT   "New mutations in the KVLQT1 potassium channel that cause long-QT
RT   syndrome.";
RL   Circulation 97:1264-1269(1998).
RN   [38]
RP   VARIANT LQT1 THR-300.
RX   PubMed=9641694; DOI=10.1161/01.cir.97.24.2420;
RA   Priori S.G., Schwartz P.J., Napolitano C., Bianchi L., Dennis A.T.,
RA   de Fusco M., Brown A.M., Casari G.;
RT   "A recessive variant of the Romano-Ward Long-QT syndrome?";
RL   Circulation 97:2420-2425(1998).
RN   [39]
RP   VARIANT JLNS1 SER-305.
RX   PubMed=9781056; DOI=10.1038/sj.ejhg.5200165;
RA   Neyroud N., Denjoy I., Donger C., Gary F., Villain E., Leenhardt A.,
RA   Benali K., Schwartz K., Coumel P., Guicheney P.;
RT   "Heterozygous mutation in the pore of potassium channel gene KvLQT1 causes
RT   an apparently normal phenotype in long QT syndrome.";
RL   Eur. J. Hum. Genet. 6:129-133(1998).
RN   [40]
RP   VARIANTS LQT1 ARG-168; SER-314; CYS-315; ASN-318; PRO-353 AND TRP-366.
RX   PubMed=9693036; DOI=10.1006/geno.1998.5361;
RA   Splawski I., Shen J., Timothy K.W., Vincent G.M., Lehmann M.H.,
RA   Keating M.T.;
RT   "Genomic structure of three long QT syndrome genes: KVLQT1, HERG, and
RT   KCNE1.";
RL   Genomics 51:86-97(1998).
RN   [41]
RP   VARIANTS LQT1 ILE-311 AND ASN-317.
RX   PubMed=9482580;
RX   DOI=10.1002/(sici)1098-1004(1998)11:2<158::aid-humu9>3.0.co;2-f;
RA   Saarinen K., Swan H., Kainulainen K., Toivonen L., Viitasalo M.,
RA   Kontula K.;
RT   "Molecular genetics of the long QT syndrome: two novel mutations of the
RT   KVLQT1 gene and phenotypic expression of the mutant gene in a large
RT   kindred.";
RL   Hum. Mutat. 11:158-165(1998).
RN   [42]
RP   VARIANT LQT1 PHE-339 DEL.
RX   PubMed=9702906; DOI=10.1203/00006450-199808000-00002;
RA   Ackerman M.J., Schroeder J.J., Berry R., Schaid D.J., Porter C.-B.J.,
RA   Michels V.V., Thibodeau S.N.;
RT   "A novel mutation in KVLQT1 is the molecular basis of inherited long QT
RT   syndrome in a near-drowning patient's family.";
RL   Pediatr. Res. 44:148-153(1998).
RN   [43]
RP   VARIANT JLNS1 HIS-243.
RX   PubMed=10090886; DOI=10.1086/302346;
RA   Mohammad-Panah R., Demolombe S., Neyroud N., Guicheney P., Kyndt F.,
RA   van den Hoff M., Baro I., Escande D.;
RT   "Mutations in a dominant-negative isoform correlate with phenotype in
RT   inherited cardiac arrhythmias.";
RL   Am. J. Hum. Genet. 64:1015-1023(1999).
RN   [44]
RP   VARIANT LQT1 HIS-174.
RX   PubMed=10367071;
RA   Denjoy I., Lupoglazoff J.M., Donger C., Berthet M., Richard P., Neyroud N.,
RA   Villain E., Lucet V., Coumel P., Guicheney P.;
RT   "Congenital long QT syndrome. The value of genetics in prognostic
RT   evaluation.";
RL   Arch. Mal. Coeur Vaiss. 92:557-563(1999).
RN   [45]
RP   VARIANTS LQT1 LEU-225; CYS-281 AND CYS-315.
RX   PubMed=9927399; DOI=10.1161/01.cir.99.4.529;
RA   Priori S.G., Napolitano C., Schwartz P.J.;
RT   "Low penetrance in the long-QT syndrome: clinical impact.";
RL   Circulation 99:529-533(1999).
RN   [46]
RP   VARIANT LQT1 THR-525.
RX   PubMed=10482963; DOI=10.1038/sj.ejhg.5200323;
RA   Larsen L.A., Fosdal I., Andersen P.S., Kanters J.K., Vuust J., Wettrell G.,
RA   Christiansen M.;
RT   "Recessive Romano-Ward syndrome associated with compound heterozygosity for
RT   two mutations in the KVLQT1 gene.";
RL   Eur. J. Hum. Genet. 7:724-728(1999).
RN   [47]
RP   VARIANTS LQT1 SER-184; ARG-189; SER-314; SER-315; ARG-345; PRO-373 AND
RP   ARG-392.
RX   PubMed=10220144;
RX   DOI=10.1002/(sici)1098-1004(1999)13:4<301::aid-humu7>3.0.co;2-v;
RA   Jongbloed R.J.E., Wilde A.A.M., Geelen J.L.M.C., Doevendans P., Schaap C.,
RA   van Langen I., van Tintelen J.P., Cobben J.M., Beaufort-Krol G.C.M.,
RA   Geraedts J.P.M., Smeets H.J.M.;
RT   "Novel KCNQ1 and HERG missense mutations in Dutch long-QT families.";
RL   Hum. Mutat. 13:301-310(1999).
RN   [48]
RP   VARIANT LQT1 CYS-157.
RX   PubMed=10220146;
RX   DOI=10.1002/(sici)1098-1004(1999)13:4<318::aid-humu9>3.0.co;2-f;
RA   Larsen L.A., Christiansen M., Vuust J., Andersen P.S.;
RT   "High-throughput single-strand conformation polymorphism analysis by
RT   automated capillary electrophoresis: robust multiplex analysis and pattern-
RT   based identification of allelic variants.";
RL   Hum. Mutat. 13:318-327(1999).
RN   [49]
RP   CHARACTERIZATION OF VARIANTS LQT1 CYS-243; ARG-248 AND LYS-261.
RX   PubMed=10409658; DOI=10.1074/jbc.274.30.21063;
RA   Franqueza L., Lin M., Shen J., Keating M.T., Sanguinetti M.C.;
RT   "Long QT syndrome-associated mutations in the S4-S5 linker of KvLQT1
RT   potassium channels modify gating and interaction with minK subunits.";
RL   J. Biol. Chem. 274:21063-21070(1999).
RN   [50]
RP   ERRATUM OF PUBMED:10409658.
RA   Franqueza L., Lin M., Shen J., Keating M.T., Sanguinetti M.C.;
RL   J. Biol. Chem. 274:25188-25188(1999).
RN   [51]
RP   VARIANTS LQT1 GLN-190; TRP-533 AND TRP-539, VARIANT JLNS1 HIS-243,
RP   CHARACTERIZATION OF VARIANTS LQT1 GLN-190; TRP-533 AND TRP-539, AND
RP   CHARACTERIZATION OF VARIANT JLNS1 HIS-243.
RX   PubMed=10728423; DOI=10.1016/s0008-6363(99)00411-3;
RA   Chouabe C., Neyroud N., Richard P., Denjoy I., Hainque B., Romey G.,
RA   Drici M.-D., Guicheney P., Barhanin J.;
RT   "Novel mutations in KvLQT1 that affect Iks activation through interactions
RT   with Isk.";
RL   Cardiovasc. Res. 45:971-980(2000).
RN   [52]
RP   VARIANTS LQT1.
RX   PubMed=10973849; DOI=10.1161/01.cir.102.10.1178;
RA   Splawski I., Shen J., Timothy K.W., Lehmann M.H., Priori S.G.,
RA   Robinson J.L., Moss A.J., Schwartz P.J., Towbin J.A., Vincent G.M.,
RA   Keating M.T.;
RT   "Spectrum of mutations in long-QT syndrome genes. KVLQT1, HERG, SCN5A,
RT   KCNE1, and KCNE2.";
RL   Circulation 102:1178-1185(2000).
RN   [53]
RP   VARIANTS LQT1 PRO-191; SER-275; LEU-277 AND VAL-306.
RX   PubMed=12442276; DOI=10.1002/humu.9085;
RA   Liu W., Yang J., Hu D., Kang C., Li C., Zhang S., Li P., Chen Z., Qin X.,
RA   Ying K., Li Y., Li Y., Li Z., Cheng X., Li L., Qi Y., Chen S., Wang Q.;
RT   "KCNQ1 and KCNH2 mutations associated with long QT syndrome in a Chinese
RT   population.";
RL   Hum. Mutat. 20:475-476(2002).
RN   [54]
RP   VARIANT ATFB3 GLY-140.
RX   PubMed=12522251; DOI=10.1126/science.1077771;
RA   Chen Y.-H., Xu S.-J., Bendahhou S., Wang X.-L., Wang Y., Xu W.-Y.,
RA   Jin H.-W., Sun H., Su X.-Y., Zhuang Q.-N., Yang Y.-Q., Li Y.-B., Liu Y.,
RA   Xu H.-J., Li X.-F., Ma N., Mou C.-P., Chen Z., Barhanin J., Huang W.;
RT   "KCNQ1 gain-of-function mutation in familial atrial fibrillation.";
RL   Science 299:251-254(2003).
RN   [55]
RP   VARIANT SQT2 LEU-307, AND CHARACTERIZATION OF VARIANT SQT2 LEU-307.
RX   PubMed=15159330; DOI=10.1161/01.cir.0000130409.72142.fe;
RA   Bellocq C., van Ginneken A.C.G., Bezzina C.R., Alders M., Escande D.,
RA   Mannens M.M.A.M., Baro I., Wilde A.A.M.;
RT   "Mutation in the KCNQ1 gene leading to the short QT-interval syndrome.";
RL   Circulation 109:2394-2397(2004).
RN   [56]
RP   VARIANTS LQT1 71-ALA--PRO-73 DEL; THR-73; GLY-115; TYR-122; ILE-133;
RP   PHE-136; LYS-160; ARG-168; CYS-174; GLN-190; PHE-204; LEU-225; ASN-235;
RP   ASN-242; CYS-243; MET-254; 254-VAL--PHE-256 DEL; CYS-259; LEU-259; ASP-261;
RP   PRO-266; SER-269; ASP-269; PHE-273; ARG-273; SER-276 DEL; LEU-277; HIS-278;
RP   LYS-290; ASP-292; CYS-293; VAL-302; ARG-304; SER-305; ILE-312; SER-314;
RP   ARG-314; ASP-314; CYS-315; ARG-316; ALA-322; PHE-339 DEL; VAL-341; SER-343;
RP   GLU-344; VAL-344; GLU-345; TRP-349; PRO-353; ARG-362; TRP-366; HIS-374;
RP   SER-380; TYR-389; TRP-452; GLY-524; GLU-526; TRP-539; LEU-546; CYS-555;
RP   HIS-555; TYR-566; SER-567; ARG-568; MET-587; THR-590; HIS-591; GLN-594;
RP   MET-619 AND SER-626.
RX   PubMed=15840476; DOI=10.1016/j.hrthm.2005.01.020;
RA   Tester D.J., Will M.L., Haglund C.M., Ackerman M.J.;
RT   "Compendium of cardiac channel mutations in 541 consecutive unrelated
RT   patients referred for long QT syndrome genetic testing.";
RL   Heart Rhythm 2:507-517(2005).
RN   [57]
RP   VARIANTS LQT1 THR-46; PHE-137; LYS-146; ASP-173; PRO-174; TRP-190; PRO-192;
RP   HIS-202; MET-204; PHE-209; MET-215; HIS-231; PRO-239; LEU-254; ARG-258;
RP   ASN-258; VAL-262; ASP-272; TRP-277; GLU-280; GLU-287; THR-302; ASP-308;
RP   GLU-316; MET-322; ARG-343; LEU-343; PRO-349; ARG-350; SER-351; THR-360;
RP   ASP-372; MET-393; GLY-518; PRO-518; ASP-548; ALA-554; THR-567; LEU-573;
RP   HIS-583 AND ASP-586.
RX   PubMed=16414944; DOI=10.1001/jama.294.23.2975;
RA   Napolitano C., Priori S.G., Schwartz P.J., Bloise R., Ronchetti E.,
RA   Nastoli J., Bottelli G., Cerrone M., Leonardi S.;
RT   "Genetic testing in the long QT syndrome: development and validation of an
RT   efficient approach to genotyping in clinical practice.";
RL   JAMA 294:2975-2980(2005).
RN   [58]
RP   VARIANTS LQT1 CYS-231; PRO-243; CYS-259; HIS-259; PHE-273; SER-314;
RP   GLU-316; VAL-341; VAL-344 AND SER-626.
RX   PubMed=16922724; DOI=10.1111/j.1399-0004.2006.00671.x;
RA   Millat G., Chevalier P., Restier-Miron L., Da Costa A., Bouvagnet P.,
RA   Kugener B., Fayol L., Gonzalez Armengod C., Oddou B., Chanavat V.,
RA   Froidefond E., Perraudin R., Rousson R., Rodriguez-Lafrasse C.;
RT   "Spectrum of pathogenic mutations and associated polymorphisms in a cohort
RT   of 44 unrelated patients with long QT syndrome.";
RL   Clin. Genet. 70:214-227(2006).
RN   [59]
RP   VARIANT JLNS1 MET-322, AND VARIANT LQT1 MET-322.
RX   PubMed=18400097; DOI=10.1186/1471-2350-9-24;
RA   Zhang S., Yin K., Ren X., Wang P., Zhang S., Cheng L., Yang J., Liu J.Y.,
RA   Liu M., Wang Q.K.;
RT   "Identification of a novel KCNQ1 mutation associated with both Jervell and
RT   Lange-Nielsen and Romano-Ward forms of long QT syndrome in a Chinese
RT   family.";
RL   BMC Med. Genet. 9:24-24(2008).
RN   [60]
RP   VARIANT JLNS1 PHE-248, AND CHARACTERIZATION OF VARIANT JLNS1 PHE-248.
RX   PubMed=18441444; DOI=10.1253/circj.72.687;
RA   Ohno S., Kubota T., Yoshida H., Tsuji K., Makiyama T., Yamada S., Kuga K.,
RA   Yamaguchi I., Kita T., Horie M.;
RT   "A novel mutation associated with Jervell and Lange-Nielsen syndrome in a
RT   Japanese family.";
RL   Circ. J. 72:687-693(2008).
RN   [61]
RP   INVOLVEMENT IN NIDDM.
RX   PubMed=18711367; DOI=10.1038/ng.207;
RA   Yasuda K., Miyake K., Horikawa Y., Hara K., Osawa H., Furuta H., Hirota Y.,
RA   Mori H., Jonsson A., Sato Y., Yamagata K., Hinokio Y., Wang H.Y.,
RA   Tanahashi T., Nakamura N., Oka Y., Iwasaki N., Iwamoto Y., Yamada Y.,
RA   Seino Y., Maegawa H., Kashiwagi A., Takeda J., Maeda E., Shin H.D.,
RA   Cho Y.M., Park K.S., Lee H.K., Ng M.C., Ma R.C., So W.Y., Chan J.C.,
RA   Lyssenko V., Tuomi T., Nilsson P., Groop L., Kamatani N., Sekine A.,
RA   Nakamura Y., Yamamoto K., Yoshida T., Tokunaga K., Itakura M., Makino H.,
RA   Nanjo K., Kadowaki T., Kasuga M.;
RT   "Variants in KCNQ1 are associated with susceptibility to type 2 diabetes
RT   mellitus.";
RL   Nat. Genet. 40:1092-1097(2008).
RN   [62]
RP   INVOLVEMENT IN NIDDM.
RX   PubMed=18711366; DOI=10.1038/ng.208;
RA   Unoki H., Takahashi A., Kawaguchi T., Hara K., Horikoshi M., Andersen G.,
RA   Ng D.P., Holmkvist J., Borch-Johnsen K., Jorgensen T., Sandbaek A.,
RA   Lauritzen T., Hansen T., Nurbaya S., Tsunoda T., Kubo M., Babazono T.,
RA   Hirose H., Hayashi M., Iwamoto Y., Kashiwagi A., Kaku K., Kawamori R.,
RA   Tai E.S., Pedersen O., Kamatani N., Kadowaki T., Kikkawa R., Nakamura Y.,
RA   Maeda S.;
RT   "SNPs in KCNQ1 are associated with susceptibility to type 2 diabetes in
RT   East Asian and European populations.";
RL   Nat. Genet. 40:1098-1102(2008).
RN   [63]
RP   INVOLVEMENT IN NIDDM.
RX   PubMed=24390345; DOI=10.1038/nature12828;
RG   The SIGMA Type 2 Diabetes Consortium;
RT   "Sequence variants in SLC16A11 are a common risk factor for type 2 diabetes
RT   in Mexico.";
RL   Nature 506:97-101(2014).
RN   [64]
RP   VARIANTS LQT1 THR-46; ILE-265; SER-296; VAL-302; GLU-316; SER-339; GLY-360;
RP   TYR-455 AND LEU-546, AND CHARACTERIZATION OF VARIANTS LQT1 THR-46; ILE-265;
RP   SER-296; VAL-302; GLU-316; SER-339; GLY-360; TYR-455 AND LEU-546.
RX   PubMed=19808498; DOI=10.1161/circep.109.850149;
RA   Yang T., Chung S.K., Zhang W., Mullins J.G., McCulley C.H., Crawford J.,
RA   MacCormick J., Eddy C.A., Shelling A.N., French J.K., Yang P.,
RA   Skinner J.R., Roden D.M., Rees M.I.;
RT   "Biophysical properties of 9 KCNQ1 mutations associated with long-QT
RT   syndrome.";
RL   Circ. Arrhythm. Electrophysiol. 2:417-426(2009).
RN   [65]
RP   VARIANTS LQT1 VAL-2; SER-7; THR-46; 64-PRO--PRO-70 DEL; PHE-66; THR-73;
RP   CYS-111; LEU-117; LEU-127; ILE-133; PRO-134; ALA-144; MET-153; MET-162;
RP   ARG-168; MET-172; CYS-174; HIS-174; THR-178; SER-179; HIS-184; ARG-186;
RP   GLN-190; LEU-190; TRP-195; VAL-198; ALA-199; MET-204; MET-215; MET-224;
RP   LEU-225; CYS-231; HIS-231; ASN-235; GLY-241; ASN-242; CYS-243; PRO-250;
RP   MET-254; CYS-259; LEU-259; VAL-262; PRO-266; SER-268; ASP-269; SER-269;
RP   ASP-272; PHE-273; VAL-274; LEU-277; PRO-277; GLU-280; CYS-281; PRO-282;
RP   GLY-283; ASP-292; CYS-293; GLU-302; VAL-302; PRO-303; ARG-305; SER-305;
RP   ARG-306; ILE-312; CYS-314; SER-314; CYS-315; VAL-316; SER-320; ALA-322;
RP   MET-322; ARG-325; TYR-339; GLU-341; GLY-341; VAL-341; PHE-342; LEU-343;
RP   ARG-350; SER-351; ARG-354; MET-360; ARG-362; HIS-365; GLN-366; TRP-366;
RP   HIS-374; GLY-379; LYS-385; PRO-389; THR-391 INS; TRP-397; ARG-398; GLU-446;
RP   LEU-448; TRP-451; SER-460; LEU-477; TRP-511; GLN-518; ARG-520; SER-522;
RP   GLY-524; THR-525; VAL-525; TRP-533; GLN-539; TRP-539; ILE-541; LYS-543;
RP   LEU-546; ARG-547; CYS-555; HIS-555; SER-555; GLU-557; PHE-566; PRO-566;
RP   TYR-566; THR-567; ARG-568; GLU-569; LEU-571; MET-587; ASP-589; CYS-591;
RP   HIS-591; GLN-594; PRO-594; GLU-596 DEL; LYS-596; MET-600; ASN-611; HIS-614
RP   DEL; SER-626 AND ARG-635.
RX   PubMed=19716085; DOI=10.1016/j.hrthm.2009.05.021;
RA   Kapplinger J.D., Tester D.J., Salisbury B.A., Carr J.L., Harris-Kerr C.,
RA   Pollevick G.D., Wilde A.A., Ackerman M.J.;
RT   "Spectrum and prevalence of mutations from the first 2,500 consecutive
RT   unrelated patients referred for the FAMILION long QT syndrome genetic
RT   test.";
RL   Heart Rhythm 6:1297-1303(2009).
RN   [66]
RP   VARIANT LQT1 HIS-320, AND CHARACTERIZATION OF VARIANTS LQT1 ALA-320 AND
RP   HIS-320.
RX   PubMed=19540844; DOI=10.1016/j.yjmcc.2009.06.009;
RA   Thomas D., Khalil M., Alter M., Schweizer P.A., Karle C.A., Wimmer A.B.,
RA   Licka M., Katus H.A., Koenen M., Ulmer H.E., Zehelein J.;
RT   "Biophysical characterization of KCNQ1 P320 mutations linked to long QT
RT   syndrome 1.";
RL   J. Mol. Cell. Cardiol. 48:230-237(2010).
RN   [67]
RP   VARIANT LQT1 LEU-277, AND CHARACTERIZATION OF VARIANT LQT1 LEU-277.
RX   PubMed=21241800; DOI=10.1016/j.bbadis.2011.01.008;
RA   Aidery P., Kisselbach J., Schweizer P.A., Becker R., Katus H.A., Thomas D.;
RT   "Biophysical properties of mutant KCNQ1 S277L channels linked to hereditary
RT   long QT syndrome with phenotypic variability.";
RL   Biochim. Biophys. Acta 1812:488-494(2011).
RN   [68]
RP   VARIANT LQT1 GLU-557, AND CHARACTERIZATION OF VARIANT LQT1 GLU-557.
RX   PubMed=25139741; DOI=10.1093/cvr/cvu191;
RA   Spaetjens R.L., Bebarova M., Seyen S.R., Lentink V., Jongbloed R.J.,
RA   Arens Y.H., Heijman J., Volders P.G.;
RT   "Long-QT mutation p.K557E-Kv7.1: dominant-negative suppression of IKs, but
RT   preserved cAMP-dependent up-regulation.";
RL   Cardiovasc. Res. 104:216-225(2014).
RN   [69]
RP   VARIANTS LQT1 ASN-235; CYS-315 AND ALA-322, AND CHARACTERIZATION OF VARIANT
RP   LQT1 ASN-235.
RX   PubMed=24269949; DOI=10.1016/j.hrthm.2013.11.021;
RA   Bartos D.C., Giudicessi J.R., Tester D.J., Ackerman M.J., Ohno S.,
RA   Horie M., Gollob M.H., Burgess D.E., Delisle B.P.;
RT   "A KCNQ1 mutation contributes to the concealed type 1 long QT phenotype by
RT   limiting the Kv7.1 channel conformational changes associated with protein
RT   kinase A phosphorylation.";
RL   Heart Rhythm 11:459-468(2014).
RN   [70]
RP   VARIANT LQT1 SER-269, AND CHARACTERIZATION OF VARIANT LQT1 SER-269.
RX   PubMed=24184248; DOI=10.1016/j.jacc.2013.08.1648;
RA   Wu J., Naiki N., Ding W.G., Ohno S., Kato K., Zang W.J., Delisle B.P.,
RA   Matsuura H., Horie M.;
RT   "A molecular mechanism for adrenergic-induced long QT syndrome.";
RL   J. Am. Coll. Cardiol. 63:819-827(2014).
RN   [71]
RP   CHARACTERIZATION OF VARIANTS LQT1 LEU-546; CYS-555; HIS-555; GLU-557 AND
RP   ASP-589, INTERACTION WITH KCNE1 AND AKAP9, SUBCELLULAR LOCATION, AND
RP   FUNCTION.
RX   PubMed=25037568; DOI=10.1242/jcs.147033;
RA   Dvir M., Strulovich R., Sachyani D., Ben-Tal Cohen I., Haitin Y.,
RA   Dessauer C., Pongs O., Kass R., Hirsch J.A., Attali B.;
RT   "Long QT mutations at the interface between KCNQ1 helix C and KCNE1 disrupt
RT   I(KS) regulation by PKA and PIP(2).";
RL   J. Cell Sci. 127:3943-3955(2014).
RN   [72]
RP   VARIANT LQT1 THR-590, AND CHARACTERIZATION OF VARIANT LQT1 THR-590.
RX   PubMed=24713462; DOI=10.1016/j.yjmcc.2014.03.019;
RA   Kinoshita K., Komatsu T., Nishide K., Hata Y., Hisajima N., Takahashi H.,
RA   Kimoto K., Aonuma K., Tsushima E., Tabata T., Yoshida T., Mori H.,
RA   Nishida K., Yamaguchi Y., Ichida F., Fukurotani K., Inoue H., Nishida N.;
RT   "A590T mutation in KCNQ1 C-terminal helix D decreases IKs channel
RT   trafficking and function but not Yotiao interaction.";
RL   J. Mol. Cell. Cardiol. 72:273-280(2014).
RN   [73]
RP   CHARACTERIZATION OF VARIANTS LQT1 ASN-242; PRO-243; HIS-250; VAL-306;
RP   ASN-317; ASP-586 AND MET-619, AND CHARACTERIZATION OF VARIANTS JLNS1
RP   PHE-248; ILE-311; MET-322 AND ASP-589.
RX   PubMed=25705178; DOI=10.3389/fncel.2015.00032;
RA   Mousavi Nik A., Gharaie S., Jeong Kim H.;
RT   "Cellular mechanisms of mutations in Kv7.1: auditory functions in Jervell
RT   and Lange-Nielsen syndrome vs. Romano-Ward syndrome.";
RL   Front. Cell. Neurosci. 9:32-32(2015).
RN   [74]
RP   VARIANT LQT1 ASP-173, AND CHARACTERIZATION OF VARIANT LQT1 ASP-173.
RX   PubMed=34398675; DOI=10.1161/jaha.121.021236;
RA   Kasak L., Rull K., Yang T., Roden D.M., Laan M.;
RT   "Recurrent pregnancy loss and concealed Long-QT syndrome.";
RL   J. Am. Heart Assoc. 10:e021236-e021236(2021).
CC   -!- FUNCTION: Potassium channel that plays an important role in a number of
CC       tissues, including heart, inner ear, stomach and colon
CC       (PubMed:10646604, PubMed:25441029). Associates with KCNE beta subunits
CC       that modulates current kinetics (PubMed:9312006, PubMed:9108097,
CC       PubMed:8900283, PubMed:10646604, PubMed:11101505, PubMed:19687231).
CC       Induces a voltage-dependent current by rapidly activating and slowly
CC       deactivating potassium-selective outward current (PubMed:9312006,
CC       PubMed:9108097, PubMed:8900283, PubMed:10646604, PubMed:11101505,
CC       PubMed:25441029). Promotes also a delayed voltage activated potassium
CC       current showing outward rectification characteristic (By similarity).
CC       During beta-adrenergic receptor stimulation participates in cardiac
CC       repolarization by associating with KCNE1 to form the I(Ks) cardiac
CC       potassium current that increases the amplitude and slows down the
CC       activation kinetics of outward potassium current I(Ks) (By similarity)
CC       (PubMed:9312006, PubMed:9108097, PubMed:8900283, PubMed:10646604,
CC       PubMed:11101505). Muscarinic agonist oxotremorine-M strongly suppresses
CC       KCNQ1/KCNE1 current (PubMed:10713961). When associated with KCNE3,
CC       forms the potassium channel that is important for cyclic AMP-stimulated
CC       intestinal secretion of chloride ions (PubMed:10646604). This
CC       interaction with KCNE3 is reduced by 17beta-estradiol, resulting in the
CC       reduction of currents (By similarity). During conditions of increased
CC       substrate load, maintains the driving force for proximal tubular and
CC       intestinal sodium ions absorption, gastric acid secretion, and cAMP-
CC       induced jejunal chloride ions secretion (By similarity). Allows the
CC       provision of potassium ions to the luminal membrane of the secretory
CC       canaliculus in the resting state as well as during stimulated acid
CC       secretion (By similarity). When associated with KCNE2, forms a
CC       heterooligomer complex leading to currents with an apparently
CC       instantaneous activation, a rapid deactivation process and a linear
CC       current-voltage relationship and decreases the amplitude of the outward
CC       current (PubMed:11101505). When associated with KCNE4, inhibits
CC       voltage-gated potassium channel activity (PubMed:19687231). When
CC       associated with KCNE5, this complex only conducts current upon strong
CC       and continued depolarization (PubMed:12324418). Also forms a
CC       heterotetramer with KCNQ5; has a voltage-gated potassium channel
CC       activity (PubMed:24855057). Binds with phosphatidylinositol 4,5-
CC       bisphosphate (PubMed:25037568). {ECO:0000250|UniProtKB:P97414,
CC       ECO:0000250|UniProtKB:Q9Z0N7, ECO:0000269|PubMed:10646604,
CC       ECO:0000269|PubMed:10713961, ECO:0000269|PubMed:11101505,
CC       ECO:0000269|PubMed:12324418, ECO:0000269|PubMed:19687231,
CC       ECO:0000269|PubMed:24855057, ECO:0000269|PubMed:25037568,
CC       ECO:0000269|PubMed:8900283, ECO:0000269|PubMed:9108097,
CC       ECO:0000269|PubMed:9312006}.
CC   -!- FUNCTION: [Isoform 2]: Non-functional alone but modulatory when
CC       coexpressed with the full-length isoform 1.
CC       {ECO:0000269|PubMed:9305853}.
CC   -!- SUBUNIT: Tetramer (PubMed:18165683, PubMed:19693805, PubMed:25441029).
CC       Heterotetramer with KCNE1; targets to the membrane raft
CC       (PubMed:25037568, PubMed:19693805, PubMed:20533308). Interacts (via C-
CC       terminus) with CALM; forms a heterooctameric structure (with 4:4
CC       KCNQ1:CALM stoichiometry) in a calcium-independent manner
CC       (PubMed:18165683, PubMed:25441029). Interacts with AKAP9; targets
CC       protein kinase A (PKA) catalytic and regulatory subunits and protein
CC       phosphatase 1 (PP1) to the KCNQ1-KCNE1 complex, allowing PKA-mediated
CC       phosphorylation and increase of delayed rectifier potassium channel
CC       activity (PubMed:11799244, PubMed:25037568). Interacts with KCNE2;
CC       forms a heterooligomer complex that targets to the membrane raft and
CC       leading to currents with an apparently instantaneous activation, a
CC       rapid deactivation process and a linear current-voltage relationship
CC       and decreases the amplitude of the outward current (PubMed:11101505,
CC       PubMed:20533308). Interacts with AP2M1; mediates estrogen-induced
CC       internalization via clathrin-coated vesicles (PubMed:23529131).
CC       Interacts with NEDD4L; promotes internalization and decreases I(Ks)
CC       currents (PubMed:23529131, PubMed:22024150). Interacts with USP2;
CC       counteracts the NEDD4L-specific down-regulation of I(Ks) and restore
CC       plasma membrane localization (PubMed:22024150). Heterotetramer with
CC       KCNQ5; has a voltage-gated potassium channel activity
CC       (PubMed:24855057). Interacts with KCNE3; alters membrane raft
CC       localization (PubMed:20533308). Interacts with KCNE4; impairs KCNQ1
CC       localization in lipid rafts and inhibits voltage-gated potassium
CC       channel activity (PubMed:19687231, PubMed:20533308). Interacts with
CC       KCNE5; impairs KCNQ1 localization in lipid rafts and only conducts
CC       current upon strong and continued depolarization (PubMed:20533308,
CC       PubMed:12324418). {ECO:0000269|PubMed:11101505,
CC       ECO:0000269|PubMed:11799244, ECO:0000269|PubMed:12324418,
CC       ECO:0000269|PubMed:18165683, ECO:0000269|PubMed:19687231,
CC       ECO:0000269|PubMed:19693805, ECO:0000269|PubMed:20533308,
CC       ECO:0000269|PubMed:22024150, ECO:0000269|PubMed:23529131,
CC       ECO:0000269|PubMed:24855057, ECO:0000269|PubMed:25037568,
CC       ECO:0000269|PubMed:25441029}.
CC   -!- INTERACTION:
CC       P51787; P15382: KCNE1; NbExp=4; IntAct=EBI-359667, EBI-7043557;
CC       P51787-1; P62158: CALM3; NbExp=6; IntAct=EBI-15885881, EBI-397435;
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000269|PubMed:10646604,
CC       ECO:0000269|PubMed:18165683, ECO:0000269|PubMed:21228319,
CC       ECO:0000269|PubMed:22024150, ECO:0000269|PubMed:25037568}; Multi-pass
CC       membrane protein {ECO:0000269|PubMed:18165683}. Cytoplasmic vesicle
CC       membrane {ECO:0000269|PubMed:18165683, ECO:0000269|PubMed:23529131}.
CC       Early endosome {ECO:0000269|PubMed:23529131}. Membrane raft
CC       {ECO:0000269|PubMed:20533308, ECO:0000269|PubMed:24855057}. Endoplasmic
CC       reticulum {ECO:0000269|PubMed:21228319, ECO:0000269|PubMed:24855057}.
CC       Basolateral cell membrane {ECO:0000269|PubMed:21228319}.
CC       Note=Colocalized with KCNE3 at the plasma membrane (PubMed:10646604).
CC       Upon 17beta-oestradiol treatment, colocalizes with RAB5A at early
CC       endosome (PubMed:23529131). Heterotetramer with KCNQ5 is highly
CC       retained at the endoplasmic reticulum and is localized outside of lipid
CC       raft microdomains (PubMed:24855057). During the early stages of
CC       epithelial cell polarization induced by the calcium switch it removed
CC       from plasma membrane to the endoplasmic reticulum where it retained and
CC       it is redistributed to the basolateral cell surface in a PI3K-dependent
CC       manner at a later stage (PubMed:21228319).
CC       {ECO:0000269|PubMed:10646604, ECO:0000269|PubMed:21228319,
CC       ECO:0000269|PubMed:23529131, ECO:0000269|PubMed:24855057}.
CC   -!- ALTERNATIVE PRODUCTS:
CC       Event=Alternative splicing; Named isoforms=2;
CC         Comment=Additional isoforms seem to exist.;
CC       Name=1;
CC         IsoId=P51787-1; Sequence=Displayed;
CC       Name=2; Synonyms=TKvLQT1;
CC         IsoId=P51787-2; Sequence=VSP_000981, VSP_000982;
CC   -!- TISSUE SPECIFICITY: Abundantly expressed in heart, pancreas, prostate,
CC       kidney, small intestine and peripheral blood leukocytes. Less abundant
CC       in placenta, lung, spleen, colon, thymus, testis and ovaries.
CC   -!- DOMAIN: The segment S4 is probably the voltage-sensor and is
CC       characterized by a series of positively charged amino acids at every
CC       third position.
CC   -!- DOMAIN: The coiled-coil domain mediates tetramerization.
CC       {ECO:0000269|PubMed:18165683, ECO:0000269|PubMed:19693805}.
CC   -!- DOMAIN: The segment S6 is involved in the inhibition of voltage-gated
CC       potassium channel activity by KCNE4. {ECO:0000269|PubMed:19687231}.
CC   -!- DOMAIN: The C-terminal assembly domain promotes self-interactiona;
CC       allows functional channel. {ECO:0000269|PubMed:10654932}.
CC   -!- DOMAIN: The C-terminal coiled-coil domain interacts with a single CALM
CC       molecule via the first two membrane-proximal helical regions, with CALM
CC       forming a clamp-like structure. Binding of CALM C-terminus to the first
CC       helical region is calcium-independent but is essential for assembly of
CC       the structure. Binding of CALM N-terminus to the second helical region
CC       is calcium-dependent and regulates electrophysiological activity of the
CC       channel. {ECO:0000269|PubMed:25441029}.
CC   -!- PTM: Phosphorylation at Ser-27 by PKA; increases delayed rectifier
CC       potassium channel activity of the KCNQ1-KCNE1 complex through a
CC       macromolecular complex that includes PKA, PP1, and the targeting
CC       protein AKAP9. {ECO:0000269|PubMed:11799244,
CC       ECO:0000269|PubMed:25037568}.
CC   -!- PTM: Ubiquitinated by NEDD4L; promotes internalization
CC       (PubMed:22024150). The ubiquitinylated form is internalized through a
CC       clathrin-mediated endocytosis by interacting with AP2M1 and is recycled
CC       back to the cell membrane via RAB4A and RAB11A (PubMed:23529131).
CC       {ECO:0000269|PubMed:22024150, ECO:0000269|PubMed:23529131}.
CC   -!- PTM: Deubiquitinated by USP2; counteracts the NEDD4L-specific down-
CC       regulation of I(Ks) and restores the membrane localization.
CC       {ECO:0000269|PubMed:22024150}.
CC   -!- DISEASE: Long QT syndrome 1 (LQT1) [MIM:192500]: A heart disorder
CC       characterized by a prolonged QT interval on the ECG and polymorphic
CC       ventricular arrhythmias. They cause syncope and sudden death in
CC       response to exercise or emotional stress, and can present with a
CC       sentinel event of sudden cardiac death in infancy.
CC       {ECO:0000269|PubMed:10024302, ECO:0000269|PubMed:10220144,
CC       ECO:0000269|PubMed:10220146, ECO:0000269|PubMed:10367071,
CC       ECO:0000269|PubMed:10409658, ECO:0000269|PubMed:10482963,
CC       ECO:0000269|PubMed:10728423, ECO:0000269|PubMed:10973849,
CC       ECO:0000269|PubMed:11799244, ECO:0000269|PubMed:12442276,
CC       ECO:0000269|PubMed:15840476, ECO:0000269|PubMed:16414944,
CC       ECO:0000269|PubMed:16922724, ECO:0000269|PubMed:18165683,
CC       ECO:0000269|PubMed:18400097, ECO:0000269|PubMed:19540844,
CC       ECO:0000269|PubMed:19716085, ECO:0000269|PubMed:19808498,
CC       ECO:0000269|PubMed:21241800, ECO:0000269|PubMed:24184248,
CC       ECO:0000269|PubMed:24269949, ECO:0000269|PubMed:24713462,
CC       ECO:0000269|PubMed:25037568, ECO:0000269|PubMed:25139741,
CC       ECO:0000269|PubMed:25705178, ECO:0000269|PubMed:34398675,
CC       ECO:0000269|PubMed:8528244, ECO:0000269|PubMed:8818942,
CC       ECO:0000269|PubMed:8872472, ECO:0000269|PubMed:9024139,
CC       ECO:0000269|PubMed:9272155, ECO:0000269|PubMed:9302275,
CC       ECO:0000269|PubMed:9312006, ECO:0000269|PubMed:9323054,
CC       ECO:0000269|PubMed:9386136, ECO:0000269|PubMed:9482580,
CC       ECO:0000269|PubMed:9570196, ECO:0000269|PubMed:9641694,
CC       ECO:0000269|PubMed:9693036, ECO:0000269|PubMed:9702906,
CC       ECO:0000269|PubMed:9799083, ECO:0000269|PubMed:9927399,
CC       ECO:0000269|Ref.32}. Note=The disease is caused by variants affecting
CC       the gene represented in this entry.
CC   -!- DISEASE: Jervell and Lange-Nielsen syndrome 1 (JLNS1) [MIM:220400]: An
CC       autosomal recessive disorder characterized by congenital deafness,
CC       prolongation of the QT interval, syncopal attacks due to ventricular
CC       arrhythmias, and a high risk of sudden death.
CC       {ECO:0000269|PubMed:10090886, ECO:0000269|PubMed:10728423,
CC       ECO:0000269|PubMed:18400097, ECO:0000269|PubMed:18441444,
CC       ECO:0000269|PubMed:25705178, ECO:0000269|PubMed:9781056}. Note=The
CC       disease is caused by variants affecting the gene represented in this
CC       entry.
CC   -!- DISEASE: Atrial fibrillation, familial, 3 (ATFB3) [MIM:607554]: An
CC       autosomal dominant form of atrial fibrillation, a common sustained
CC       cardiac rhythm disturbance. Atrial fibrillation is characterized by
CC       disorganized atrial electrical activity and ineffective atrial
CC       contraction promoting blood stasis in the atria and reduces ventricular
CC       filling. It can result in palpitations, syncope, thromboembolic stroke,
CC       and congestive heart failure. {ECO:0000269|PubMed:12522251}. Note=The
CC       disease is caused by variants affecting the gene represented in this
CC       entry.
CC   -!- DISEASE: Short QT syndrome 2 (SQT2) [MIM:609621]: A heart disorder
CC       characterized by idiopathic persistently and uniformly short QT
CC       interval on ECG in the absence of structural heart disease in affected
CC       individuals. It causes syncope and sudden death.
CC       {ECO:0000269|PubMed:15159330}. Note=The disease is caused by variants
CC       affecting the gene represented in this entry.
CC   -!- DISEASE: Diabetes mellitus, non-insulin-dependent (NIDDM) [MIM:125853]:
CC       A multifactorial disorder of glucose homeostasis caused by a lack of
CC       sensitivity to the body's own insulin. Affected individuals usually
CC       have an obese body habitus and manifestations of a metabolic syndrome
CC       characterized by diabetes, insulin resistance, hypertension and
CC       hypertriglyceridemia. The disease results in long-term complications
CC       that affect the eyes, kidneys, nerves, and blood vessels.
CC       {ECO:0000269|PubMed:18711366, ECO:0000269|PubMed:18711367,
CC       ECO:0000269|PubMed:24390345}. Note=Disease susceptibility is associated
CC       with variants affecting the gene represented in this entry.
CC   -!- MISCELLANEOUS: Mutagenesis experiments were carried out by expressing
CC       in Xenopus oocytes or COS-7 cells KCNQ1 mutants either individually
CC       (homomultimers) or in combination with both wild-type KCNQ1 (mut/wt
CC       homomultimers) and minK (heteromultimers).
CC   -!- SIMILARITY: Belongs to the potassium channel family. KQT (TC 1.A.1.15)
CC       subfamily. Kv7.1/KCNQ1 sub-subfamily. {ECO:0000305}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=AAC51781.1; Type=Miscellaneous discrepancy; Note=Contaminating sequence. Sequence of unknown origin in the N-terminal part.; Evidence={ECO:0000305};
CC       Sequence=BAA34739.1; Type=Frameshift; Evidence={ECO:0000305};
CC   -!- WEB RESOURCE: Name=Wikipedia; Note=KvLQT1 entry;
CC       URL="https://en.wikipedia.org/wiki/KvLQT1";
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DR   EMBL; AF000571; AAC51776.1; -; mRNA.
DR   EMBL; AF051426; AAC05705.1; -; mRNA.
DR   EMBL; AB015163; BAA34738.1; -; Genomic_DNA.
DR   EMBL; AB015163; BAA34739.1; ALT_FRAME; Genomic_DNA.
DR   EMBL; AJ006345; CAB44649.1; -; Genomic_DNA.
DR   EMBL; AJ006345; CAB44650.1; -; Genomic_DNA.
DR   EMBL; AY114213; AAM94040.1; -; mRNA.
DR   EMBL; AK290618; BAF83307.1; -; mRNA.
DR   EMBL; AC013791; -; NOT_ANNOTATED_CDS; Genomic_DNA.
DR   EMBL; AC021424; -; NOT_ANNOTATED_CDS; Genomic_DNA.
DR   EMBL; AC124055; -; NOT_ANNOTATED_CDS; Genomic_DNA.
DR   EMBL; AC124057; -; NOT_ANNOTATED_CDS; Genomic_DNA.
DR   EMBL; AP006463; -; NOT_ANNOTATED_CDS; Genomic_DNA.
DR   EMBL; KF455303; -; NOT_ANNOTATED_CDS; Genomic_DNA.
DR   EMBL; KF455304; -; NOT_ANNOTATED_CDS; Genomic_DNA.
DR   EMBL; KF455305; -; NOT_ANNOTATED_CDS; Genomic_DNA.
DR   EMBL; KF455306; -; NOT_ANNOTATED_CDS; Genomic_DNA.
DR   EMBL; KF459741; -; NOT_ANNOTATED_CDS; Genomic_DNA.
DR   EMBL; CH471158; EAX02517.1; -; Genomic_DNA.
DR   EMBL; BC113545; AAI13546.1; -; mRNA.
DR   EMBL; U86146; AAB53974.1; -; mRNA.
DR   EMBL; U89364; AAC51781.1; ALT_SEQ; mRNA.
DR   CCDS; CCDS7736.1; -. [P51787-1]
DR   RefSeq; NP_000209.2; NM_000218.2. [P51787-1]
DR   RefSeq; NP_861463.1; NM_181798.1. [P51787-2]
DR   PDB; 3BJ4; X-ray; 2.00 A; A/B=574-622.
DR   PDB; 3HFC; X-ray; 2.45 A; A/B/C=583-611.
DR   PDB; 3HFE; X-ray; 1.70 A; A/B/C=583-611.
DR   PDB; 4UMO; X-ray; 3.00 A; A/B=352-539.
DR   PDB; 4V0C; X-ray; 2.86 A; A/B=352-539.
DR   PDB; 6MIE; NMR; -; A=100-249.
DR   PDB; 6UZZ; EM; 3.10 A; A/C/E/G=76-620.
DR   PDB; 6V00; EM; 3.10 A; A/D/G/J=76-620.
DR   PDB; 6V01; EM; 3.90 A; A/D/G/J=75-620.
DR   PDBsum; 3BJ4; -.
DR   PDBsum; 3HFC; -.
DR   PDBsum; 3HFE; -.
DR   PDBsum; 4UMO; -.
DR   PDBsum; 4V0C; -.
DR   PDBsum; 6MIE; -.
DR   PDBsum; 6UZZ; -.
DR   PDBsum; 6V00; -.
DR   PDBsum; 6V01; -.
DR   AlphaFoldDB; P51787; -.
DR   BMRB; P51787; -.
DR   SMR; P51787; -.
DR   BioGRID; 109985; 18.
DR   ComplexPortal; CPX-3271; KCNQ1-KCNE1 I(Ks) channel complex.
DR   ComplexPortal; CPX-902; Kv7.1 channel complex.
DR   CORUM; P51787; -.
DR   DIP; DIP-27591N; -.
DR   DIP; DIP-29941N; -.
DR   IntAct; P51787; 5.
DR   MINT; P51787; -.
DR   STRING; 9606.ENSP00000155840; -.
DR   BindingDB; P51787; -.
DR   ChEMBL; CHEMBL1866; -.
DR   DrugBank; DB04957; Azimilide.
DR   DrugBank; DB01244; Bepridil.
DR   DrugBank; DB04855; Dronedarone.
DR   DrugBank; DB00228; Enflurane.
DR   DrugBank; DB06089; ICA-105665.
DR   DrugBank; DB11633; Isavuconazole.
DR   DrugBank; DB01110; Miconazole.
DR   DrugBank; DB01069; Promethazine.
DR   DrugCentral; P51787; -.
DR   GuidetoPHARMACOLOGY; 560; -.
DR   TCDB; 1.A.1.15.6; the voltage-gated ion channel (vic) superfamily.
DR   GlyGen; P51787; 1 site.
DR   iPTMnet; P51787; -.
DR   PhosphoSitePlus; P51787; -.
DR   BioMuta; KCNQ1; -.
DR   DMDM; 6166005; -.
DR   EPD; P51787; -.
DR   jPOST; P51787; -.
DR   MassIVE; P51787; -.
DR   PaxDb; P51787; -.
DR   PeptideAtlas; P51787; -.
DR   PRIDE; P51787; -.
DR   ProteomicsDB; 56383; -. [P51787-1]
DR   ProteomicsDB; 56384; -. [P51787-2]
DR   Antibodypedia; 4357; 495 antibodies from 40 providers.
DR   DNASU; 3784; -.
DR   Ensembl; ENST00000155840.12; ENSP00000155840.2; ENSG00000053918.18. [P51787-1]
DR   Ensembl; ENST00000335475.6; ENSP00000334497.5; ENSG00000053918.18. [P51787-2]
DR   GeneID; 3784; -.
DR   KEGG; hsa:3784; -.
DR   MANE-Select; ENST00000155840.12; ENSP00000155840.2; NM_000218.3; NP_000209.2.
DR   UCSC; uc001lwn.4; human. [P51787-1]
DR   CTD; 3784; -.
DR   DisGeNET; 3784; -.
DR   GeneCards; KCNQ1; -.
DR   GeneReviews; KCNQ1; -.
DR   HGNC; HGNC:6294; KCNQ1.
DR   HPA; ENSG00000053918; Tissue enhanced (adrenal gland, stomach).
DR   MalaCards; KCNQ1; -.
DR   MIM; 125853; phenotype.
DR   MIM; 192500; phenotype.
DR   MIM; 220400; phenotype.
DR   MIM; 607542; gene.
DR   MIM; 607554; phenotype.
DR   MIM; 609621; phenotype.
DR   neXtProt; NX_P51787; -.
DR   OpenTargets; ENSG00000053918; -.
DR   Orphanet; 334; Familial atrial fibrillation.
DR   Orphanet; 51083; Familial short QT syndrome.
DR   Orphanet; 90647; Jervell and Lange-Nielsen syndrome.
DR   Orphanet; 101016; Romano-Ward syndrome.
DR   PharmGKB; PA223; -.
DR   VEuPathDB; HostDB:ENSG00000053918; -.
DR   eggNOG; KOG1419; Eukaryota.
DR   GeneTree; ENSGT00940000161001; -.
DR   HOGENOM; CLU_011722_8_3_1; -.
DR   InParanoid; P51787; -.
DR   OMA; WKIHIAP; -.
DR   PhylomeDB; P51787; -.
DR   TreeFam; TF315186; -.
DR   PathwayCommons; P51787; -.
DR   Reactome; R-HSA-1296072; Voltage gated Potassium channels.
DR   Reactome; R-HSA-5576890; Phase 3 - rapid repolarisation.
DR   Reactome; R-HSA-5576893; Phase 2 - plateau phase.
DR   SignaLink; P51787; -.
DR   SIGNOR; P51787; -.
DR   BioGRID-ORCS; 3784; 12 hits in 1070 CRISPR screens.
DR   ChiTaRS; KCNQ1; human.
DR   EvolutionaryTrace; P51787; -.
DR   GeneWiki; KvLQT1; -.
DR   GenomeRNAi; 3784; -.
DR   Pharos; P51787; Tclin.
DR   PRO; PR:P51787; -.
DR   Proteomes; UP000005640; Chromosome 11.
DR   RNAct; P51787; protein.
DR   Bgee; ENSG00000053918; Expressed in left adrenal gland cortex and 98 other tissues.
DR   ExpressionAtlas; P51787; baseline and differential.
DR   Genevisible; P51787; HS.
DR   GO; GO:0016324; C:apical plasma membrane; IEA:Ensembl.
DR   GO; GO:1990794; C:basolateral part of cell; IEA:Ensembl.
DR   GO; GO:0016323; C:basolateral plasma membrane; IDA:UniProtKB.
DR   GO; GO:0009986; C:cell surface; IEA:Ensembl.
DR   GO; GO:0097546; C:ciliary base; IEA:Ensembl.
DR   GO; GO:0005737; C:cytoplasm; IDA:UniProtKB.
DR   GO; GO:0030659; C:cytoplasmic vesicle membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0005769; C:early endosome; IDA:BHF-UCL.
DR   GO; GO:0005783; C:endoplasmic reticulum; IDA:UniProtKB.
DR   GO; GO:0016021; C:integral component of membrane; IBA:GO_Central.
DR   GO; GO:0034702; C:ion channel complex; IPI:UniProtKB.
DR   GO; GO:0005770; C:late endosome; IDA:BHF-UCL.
DR   GO; GO:0005764; C:lysosome; IDA:BHF-UCL.
DR   GO; GO:0016020; C:membrane; IC:ComplexPortal.
DR   GO; GO:0045121; C:membrane raft; IDA:UniProtKB.
DR   GO; GO:0043005; C:neuron projection; IEA:Ensembl.
DR   GO; GO:0043025; C:neuronal cell body; IEA:Ensembl.
DR   GO; GO:0005886; C:plasma membrane; IDA:UniProtKB.
DR   GO; GO:0030133; C:transport vesicle; IEA:Ensembl.
DR   GO; GO:0008076; C:voltage-gated potassium channel complex; IDA:BHF-UCL.
DR   GO; GO:0005516; F:calmodulin binding; IDA:BHF-UCL.
DR   GO; GO:0005251; F:delayed rectifier potassium channel activity; IDA:UniProtKB.
DR   GO; GO:0015271; F:outward rectifier potassium channel activity; IDA:UniProtKB.
DR   GO; GO:0005546; F:phosphatidylinositol-4,5-bisphosphate binding; IDA:UniProtKB.
DR   GO; GO:0034236; F:protein kinase A catalytic subunit binding; IDA:BHF-UCL.
DR   GO; GO:0034237; F:protein kinase A regulatory subunit binding; IDA:BHF-UCL.
DR   GO; GO:0008157; F:protein phosphatase 1 binding; IDA:BHF-UCL.
DR   GO; GO:0097110; F:scaffold protein binding; IPI:BHF-UCL.
DR   GO; GO:0044325; F:transmembrane transporter binding; IPI:UniProtKB.
DR   GO; GO:0005249; F:voltage-gated potassium channel activity; IDA:UniProtKB.
DR   GO; GO:0086089; F:voltage-gated potassium channel activity involved in atrial cardiac muscle cell action potential repolarization; IMP:BHF-UCL.
DR   GO; GO:0086008; F:voltage-gated potassium channel activity involved in cardiac muscle cell action potential repolarization; IMP:BHF-UCL.
DR   GO; GO:1902282; F:voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization; IMP:BHF-UCL.
DR   GO; GO:0071875; P:adrenergic receptor signaling pathway; IEA:Ensembl.
DR   GO; GO:0086014; P:atrial cardiac muscle cell action potential; IMP:BHF-UCL.
DR   GO; GO:0060117; P:auditory receptor cell development; IEA:Ensembl.
DR   GO; GO:0060048; P:cardiac muscle contraction; IMP:BHF-UCL.
DR   GO; GO:0030644; P:cellular chloride ion homeostasis; IEA:Ensembl.
DR   GO; GO:0071320; P:cellular response to cAMP; IDA:BHF-UCL.
DR   GO; GO:0071872; P:cellular response to epinephrine stimulus; TAS:BHF-UCL.
DR   GO; GO:0071466; P:cellular response to xenobiotic stimulus; IDA:BHF-UCL.
DR   GO; GO:0090102; P:cochlea development; IEA:Ensembl.
DR   GO; GO:0035934; P:corticosterone secretion; IEA:Ensembl.
DR   GO; GO:0050910; P:detection of mechanical stimulus involved in sensory perception of sound; IEA:Ensembl.
DR   GO; GO:0030218; P:erythrocyte differentiation; IEA:Ensembl.
DR   GO; GO:0001698; P:gastrin-induced gastric acid secretion; IEA:Ensembl.
DR   GO; GO:0010467; P:gene expression; IEA:Ensembl.
DR   GO; GO:0006006; P:glucose metabolic process; IEA:Ensembl.
DR   GO; GO:0007507; P:heart development; IEA:Ensembl.
DR   GO; GO:0048839; P:inner ear development; ISS:UniProtKB.
DR   GO; GO:0042472; P:inner ear morphogenesis; IEA:Ensembl.
DR   GO; GO:0050892; P:intestinal absorption; ISS:UniProtKB.
DR   GO; GO:0015705; P:iodide transport; IEA:Ensembl.
DR   GO; GO:0086011; P:membrane repolarization during action potential; IDA:BHF-UCL.
DR   GO; GO:0098914; P:membrane repolarization during atrial cardiac muscle cell action potential; IMP:BHF-UCL.
DR   GO; GO:0086013; P:membrane repolarization during cardiac muscle cell action potential; IMP:BHF-UCL.
DR   GO; GO:0098915; P:membrane repolarization during ventricular cardiac muscle cell action potential; IMP:BHF-UCL.
DR   GO; GO:1902260; P:negative regulation of delayed rectifier potassium channel activity; IDA:UniProtKB.
DR   GO; GO:0010629; P:negative regulation of gene expression; IEA:Ensembl.
DR   GO; GO:1903817; P:negative regulation of voltage-gated potassium channel activity; IDA:UniProtKB.
DR   GO; GO:0050905; P:neuromuscular process; IEA:Ensembl.
DR   GO; GO:1905515; P:non-motile cilium assembly; IEA:Ensembl.
DR   GO; GO:0060452; P:positive regulation of cardiac muscle contraction; IMP:BHF-UCL.
DR   GO; GO:0010460; P:positive regulation of heart rate; IMP:BHF-UCL.
DR   GO; GO:1901381; P:positive regulation of potassium ion transmembrane transport; IDA:BHF-UCL.
DR   GO; GO:0097623; P:potassium ion export across plasma membrane; IDA:BHF-UCL.
DR   GO; GO:0055075; P:potassium ion homeostasis; IEA:Ensembl.
DR   GO; GO:1990573; P:potassium ion import across plasma membrane; IEA:Ensembl.
DR   GO; GO:0071805; P:potassium ion transmembrane transport; IDA:BHF-UCL.
DR   GO; GO:0060372; P:regulation of atrial cardiac muscle cell membrane repolarization; IMP:BHF-UCL.
DR   GO; GO:0008217; P:regulation of blood pressure; IEA:Ensembl.
DR   GO; GO:0060453; P:regulation of gastric acid secretion; ISS:UniProtKB.
DR   GO; GO:0006349; P:regulation of gene expression by genomic imprinting; IEA:Ensembl.
DR   GO; GO:0008016; P:regulation of heart contraction; IC:BHF-UCL.
DR   GO; GO:0086091; P:regulation of heart rate by cardiac conduction; IMP:BHF-UCL.
DR   GO; GO:0060306; P:regulation of membrane repolarization; IDA:BHF-UCL.
DR   GO; GO:0060307; P:regulation of ventricular cardiac muscle cell membrane repolarization; IMP:BHF-UCL.
DR   GO; GO:1905150; P:regulation of voltage-gated sodium channel activity; IEA:Ensembl.
DR   GO; GO:0070293; P:renal absorption; ISS:UniProtKB.
DR   GO; GO:0070294; P:renal sodium ion absorption; IEA:Ensembl.
DR   GO; GO:0032868; P:response to insulin; IEA:Ensembl.
DR   GO; GO:0035094; P:response to nicotine; IEA:Ensembl.
DR   GO; GO:0007622; P:rhythmic behavior; IEA:Ensembl.
DR   GO; GO:0007605; P:sensory perception of sound; TAS:ProtInc.
DR   GO; GO:0035176; P:social behavior; IEA:Ensembl.
DR   GO; GO:0062094; P:stomach development; IEA:Ensembl.
DR   GO; GO:0086005; P:ventricular cardiac muscle cell action potential; IMP:BHF-UCL.
DR   Gene3D; 1.20.120.350; -; 1.
DR   InterPro; IPR005821; Ion_trans_dom.
DR   InterPro; IPR003937; K_chnl_volt-dep_KCNQ.
DR   InterPro; IPR013821; K_chnl_volt-dep_KCNQ_C.
DR   InterPro; IPR005827; K_chnl_volt-dep_KCQN1.
DR   InterPro; IPR028325; VG_K_chnl.
DR   InterPro; IPR027359; Volt_channel_dom_sf.
DR   PANTHER; PTHR11537; PTHR11537; 1.
DR   PANTHER; PTHR11537:SF266; PTHR11537:SF266; 1.
DR   Pfam; PF00520; Ion_trans; 1.
DR   Pfam; PF03520; KCNQ_channel; 1.
DR   PRINTS; PR01460; KCNQ1CHANNEL.
DR   PRINTS; PR01459; KCNQCHANNEL.
PE   1: Evidence at protein level;
KW   3D-structure; Alternative splicing; Atrial fibrillation;
KW   Calmodulin-binding; Cell membrane; Coiled coil; Cytoplasmic vesicle;
KW   Deafness; Diabetes mellitus; Disease variant; Endoplasmic reticulum;
KW   Endosome; Glycoprotein; Ion channel; Ion transport; Long QT syndrome;
KW   Membrane; Phosphoprotein; Potassium; Potassium channel;
KW   Potassium transport; Reference proteome; Short QT syndrome; Transmembrane;
KW   Transmembrane helix; Transport; Ubl conjugation; Voltage-gated channel.
FT   CHAIN           1..676
FT                   /note="Potassium voltage-gated channel subfamily KQT member
FT                   1"
FT                   /id="PRO_0000054022"
FT   TOPO_DOM        1..121
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        122..142
FT                   /note="Helical; Name=Segment S1"
FT                   /evidence="ECO:0000255"
FT   TOPO_DOM        143..147
FT                   /note="Extracellular"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        148..168
FT                   /note="Helical; Name=Segment S2"
FT                   /evidence="ECO:0000255"
FT   TOPO_DOM        169..196
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        197..217
FT                   /note="Helical; Name=Segment S3"
FT                   /evidence="ECO:0000255"
FT   TOPO_DOM        218..225
FT                   /note="Extracellular"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        226..248
FT                   /note="Helical; Voltage-sensor; Name=Segment S4"
FT                   /evidence="ECO:0000255"
FT   TOPO_DOM        249..261
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        262..282
FT                   /note="Helical; Name=Segment S5"
FT                   /evidence="ECO:0000255"
FT   TOPO_DOM        283..299
FT                   /note="Extracellular"
FT                   /evidence="ECO:0000255"
FT   INTRAMEM        300..320
FT                   /note="Pore-forming; Name=Segment H5"
FT                   /evidence="ECO:0000255"
FT   TOPO_DOM        321..327
FT                   /note="Extracellular"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        328..348
FT                   /note="Helical; Name=Segment S6"
FT                   /evidence="ECO:0000255"
FT   TOPO_DOM        349..676
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000255"
FT   REGION          1..28
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   REGION          62..84
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   REGION          370..382
FT                   /note="Interaction with CALM"
FT                   /evidence="ECO:0000269|PubMed:25441029"
FT   REGION          515..529
FT                   /note="Interaction with CALM; calcium-dependent"
FT                   /evidence="ECO:0000269|PubMed:25441029"
FT   REGION          535..572
FT                   /note="Interaction with KCNE1 C-terminus"
FT                   /evidence="ECO:0000269|PubMed:25037568"
FT   REGION          588..616
FT                   /note="Interaction with AKAP9"
FT                   /evidence="ECO:0000269|PubMed:11799244"
FT   REGION          589..620
FT                   /note="C-terminal assembly domain"
FT                   /evidence="ECO:0000269|PubMed:10654932"
FT   REGION          620..676
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COILED          585..621
FT                   /evidence="ECO:0000269|PubMed:19693805"
FT   MOTIF           312..317
FT                   /note="Selectivity filter"
FT                   /evidence="ECO:0000250"
FT   COMPBIAS        62..80
FT                   /note="Pro residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   MOD_RES         27
FT                   /note="Phosphoserine; by PKA"
FT                   /evidence="ECO:0000269|PubMed:11799244"
FT   MOD_RES         407
FT                   /note="Phosphoserine"
FT                   /evidence="ECO:0000250|UniProtKB:P97414"
FT   MOD_RES         409
FT                   /note="Phosphoserine"
FT                   /evidence="ECO:0000250|UniProtKB:P97414"
FT   CARBOHYD        289
FT                   /note="N-linked (GlcNAc...) asparagine"
FT                   /evidence="ECO:0000255"
FT   VAR_SEQ         1..127
FT                   /note="Missing (in isoform 2)"
FT                   /evidence="ECO:0000303|PubMed:14702039,
FT                   ECO:0000303|PubMed:15489334, ECO:0000303|PubMed:9305853"
FT                   /id="VSP_000981"
FT   VAR_SEQ         128..129
FT                   /note="AV -> MD (in isoform 2)"
FT                   /evidence="ECO:0000303|PubMed:14702039,
FT                   ECO:0000303|PubMed:15489334, ECO:0000303|PubMed:9305853"
FT                   /id="VSP_000982"
FT   VARIANT         2
FT                   /note="A -> V (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473442)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074927"
FT   VARIANT         7
FT                   /note="P -> S (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473443)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074928"
FT   VARIANT         46
FT                   /note="A -> T (in LQT1; unknown pathological significance;
FT                   hardly any effect on channel activity, shows fast
FT                   activation; dbSNP:rs199473671)"
FT                   /evidence="ECO:0000269|PubMed:16414944,
FT                   ECO:0000269|PubMed:19716085, ECO:0000269|PubMed:19808498"
FT                   /id="VAR_074929"
FT   VARIANT         64..70
FT                   /note="Missing (in LQT1; unknown pathological
FT                   significance)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074930"
FT   VARIANT         66
FT                   /note="S -> F (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473446)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074931"
FT   VARIANT         71..73
FT                   /note="Missing (in LQT1)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_009917"
FT   VARIANT         73
FT                   /note="P -> T (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472676)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_068287"
FT   VARIANT         111
FT                   /note="Y -> C (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472678)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_009918"
FT   VARIANT         115
FT                   /note="E -> G (in LQT1; dbSNP:rs199472679)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_068288"
FT   VARIANT         117
FT                   /note="P -> L (in LQT1; unknown pathological significance;
FT                   dbSNP:rs120074191)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074932"
FT   VARIANT         122
FT                   /note="C -> Y (in LQT1; dbSNP:rs199472681)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_068289"
FT   VARIANT         127
FT                   /note="F -> L (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472682)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074933"
FT   VARIANT         133
FT                   /note="V -> I (in LQT1; dbSNP:rs199473449)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_068290"
FT   VARIANT         134
FT                   /note="L -> P (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472685)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074934"
FT   VARIANT         136
FT                   /note="C -> F (in LQT1; dbSNP:rs199472686)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_068291"
FT   VARIANT         137
FT                   /note="L -> F (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473450)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_074935"
FT   VARIANT         140
FT                   /note="S -> G (in ATFB3; gain of function;
FT                   dbSNP:rs120074192)"
FT                   /evidence="ECO:0000269|PubMed:12522251"
FT                   /id="VAR_015742"
FT   VARIANT         144
FT                   /note="T -> A (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473451)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074936"
FT   VARIANT         146
FT                   /note="E -> K (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472688)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_074937"
FT   VARIANT         153
FT                   /note="T -> M (in LQT1; unknown pathological significance;
FT                   dbSNP:rs143709408)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074938"
FT   VARIANT         157
FT                   /note="F -> C (in LQT1; dbSNP:rs199472690)"
FT                   /evidence="ECO:0000269|PubMed:10220146"
FT                   /id="VAR_008124"
FT   VARIANT         160
FT                   /note="E -> K (in LQT1; dbSNP:rs199473453)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_009919"
FT   VARIANT         162
FT                   /note="V -> M (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472692)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074939"
FT   VARIANT         167..168
FT                   /note="FG -> W (in LQT1)"
FT                   /id="VAR_001515"
FT   VARIANT         168
FT                   /note="G -> R (in LQT1; dbSNP:rs179489)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085, ECO:0000269|PubMed:9693036"
FT                   /id="VAR_001516"
FT   VARIANT         172
FT                   /note="V -> M (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472694)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074940"
FT   VARIANT         173
FT                   /note="V -> D (in LQT1; affects channel activity; when
FT                   expressed in heterologous system the mutant significantly
FT                   reduces total IKs steady-state and tail currents with a
FT                   positive shift of the voltage dependence of activation;
FT                   dbSNP:rs199472695)"
FT                   /evidence="ECO:0000269|PubMed:16414944,
FT                   ECO:0000269|PubMed:34398675"
FT                   /id="VAR_074941"
FT   VARIANT         174
FT                   /note="R -> C (in LQT1; dbSNP:rs199472696)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_001517"
FT   VARIANT         174
FT                   /note="R -> H (in LQT1; dbSNP:rs199472697)"
FT                   /evidence="ECO:0000269|PubMed:10367071,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_008939"
FT   VARIANT         174
FT                   /note="R -> P (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472697)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_074942"
FT   VARIANT         178
FT                   /note="A -> P (in LQT1; loss of channel activity;
FT                   dbSNP:rs120074177)"
FT                   /evidence="ECO:0000269|PubMed:9323054"
FT                   /id="VAR_001518"
FT   VARIANT         178
FT                   /note="A -> T (in LQT1; dbSNP:rs120074177)"
FT                   /evidence="ECO:0000269|PubMed:19716085,
FT                   ECO:0000269|PubMed:9024139"
FT                   /id="VAR_009920"
FT   VARIANT         179
FT                   /note="G -> S (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473394)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_009921"
FT   VARIANT         184
FT                   /note="Y -> H (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473661)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074943"
FT   VARIANT         184
FT                   /note="Y -> S (in LQT1; dbSNP:rs199473397)"
FT                   /evidence="ECO:0000269|PubMed:10220144"
FT                   /id="VAR_008125"
FT   VARIANT         186
FT                   /note="G -> R (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473398)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074944"
FT   VARIANT         189
FT                   /note="G -> R (in LQT1; familial sudden death;
FT                   dbSNP:rs104894252)"
FT                   /evidence="ECO:0000269|PubMed:10220144"
FT                   /id="VAR_001519"
FT   VARIANT         190
FT                   /note="R -> L (in LQT1; unknown pathological significance;
FT                   dbSNP:rs120074178)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074945"
FT   VARIANT         190
FT                   /note="R -> Q (in LQT1; loss of channel activity;
FT                   dbSNP:rs120074178)"
FT                   /evidence="ECO:0000269|PubMed:10728423,
FT                   ECO:0000269|PubMed:15840476, ECO:0000269|PubMed:19716085"
FT                   /id="VAR_001520"
FT   VARIANT         190
FT                   /note="R -> W (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473662)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_074946"
FT   VARIANT         191
FT                   /note="L -> P (in LQT1; dbSNP:rs199473401)"
FT                   /evidence="ECO:0000269|PubMed:12442276"
FT                   /id="VAR_074687"
FT   VARIANT         192
FT                   /note="R -> P (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472698)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_074947"
FT   VARIANT         194
FT                   /note="A -> P (in LQT1; dbSNP:rs199472699)"
FT                   /id="VAR_009922"
FT   VARIANT         195
FT                   /note="R -> W (in LQT1; unknown pathological significance;
FT                   dbSNP:rs150172393)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074948"
FT   VARIANT         198
FT                   /note="I -> V (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472700)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074949"
FT   VARIANT         199
FT                   /note="S -> A (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472701)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074950"
FT   VARIANT         202
FT                   /note="D -> H (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472702)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_074951"
FT   VARIANT         204
FT                   /note="I -> F (in LQT1; dbSNP:rs199472703)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_068292"
FT   VARIANT         204
FT                   /note="I -> M (in LQT1; dbSNP:rs199473455)"
FT                   /evidence="ECO:0000269|PubMed:16414944,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074952"
FT   VARIANT         209
FT                   /note="S -> F (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472704)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_074953"
FT   VARIANT         215
FT                   /note="V -> M (in LQT1; dbSNP:rs17215479)"
FT                   /evidence="ECO:0000269|PubMed:16414944,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074954"
FT   VARIANT         216
FT                   /note="G -> R (in LQT1)"
FT                   /evidence="ECO:0000269|PubMed:9272155"
FT                   /id="VAR_001521"
FT   VARIANT         224
FT                   /note="T -> M (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472706)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074955"
FT   VARIANT         225
FT                   /note="S -> L (in LQT1; dbSNP:rs199473456)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085, ECO:0000269|PubMed:9927399"
FT                   /id="VAR_009923"
FT   VARIANT         231
FT                   /note="R -> C (in LQT1; dbSNP:rs199473457)"
FT                   /evidence="ECO:0000269|PubMed:16922724,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074956"
FT   VARIANT         231
FT                   /note="R -> H (in LQT1; dbSNP:rs199472709)"
FT                   /evidence="ECO:0000269|PubMed:16414944,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074957"
FT   VARIANT         235
FT                   /note="I -> N (in LQT1; decreases delayed rectifier
FT                   potassium current Iks; prevents the up-regulation of Iks
FT                   through PKA activation; dbSNP:rs199472710)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085, ECO:0000269|PubMed:24269949"
FT                   /id="VAR_068293"
FT   VARIANT         239
FT                   /note="L -> P (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473458)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_074958"
FT   VARIANT         241
FT                   /note="V -> G (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472711)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074959"
FT   VARIANT         242
FT                   /note="D -> N (in LQT1; decreases outward potassium
FT                   current; decreases plasma membrane localization;
FT                   dbSNP:rs199472712)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085, ECO:0000269|PubMed:25705178,
FT                   ECO:0000269|PubMed:9799083"
FT                   /id="VAR_008940"
FT   VARIANT         243
FT                   /note="R -> C (in LQT1; slower rate of activation and
FT                   voltage dependence of activation-inactivation shifted to
FT                   more positive potentials (homomultimers); channels non-
FT                   functional (heteromultimers); dbSNP:rs199472713)"
FT                   /evidence="ECO:0000269|PubMed:10409658,
FT                   ECO:0000269|PubMed:15840476, ECO:0000269|PubMed:19716085"
FT                   /id="VAR_010933"
FT   VARIANT         243
FT                   /note="R -> H (in JLNS1; minor changes of wt current
FT                   (homomultimers); positive voltage shift of the channel
FT                   activation (heteromultimers); dbSNP:rs120074196)"
FT                   /evidence="ECO:0000269|PubMed:10090886,
FT                   ECO:0000269|PubMed:10728423"
FT                   /id="VAR_008941"
FT   VARIANT         243
FT                   /note="R -> P (in LQT1; complete loss of outward potassium
FT                   current; enhances outward potassium current when co-
FT                   transfected with wild type; decreases plasma membrane
FT                   localization; dbSNP:rs120074196)"
FT                   /evidence="ECO:0000269|PubMed:16922724,
FT                   ECO:0000269|PubMed:25705178"
FT                   /id="VAR_074688"
FT   VARIANT         248
FT                   /note="W -> F (in JLNS1; requires 2 nucleotide
FT                   substitutions; does not affect plasma membrane
FT                   localization; complete loss of outward currents; enhances
FT                   outward currents when coexpressed with wild type at
FT                   equimolar ratio; dbSNP:rs397508123)"
FT                   /evidence="ECO:0000269|PubMed:18441444,
FT                   ECO:0000269|PubMed:25705178"
FT                   /id="VAR_074689"
FT   VARIANT         248
FT                   /note="W -> R (in LQT1; slower rate of activation and
FT                   voltage dependence of activation-inactivation shifted to
FT                   more positive potentials (homomultimers); channels non-
FT                   functional (heteromultimers); dbSNP:rs199473459)"
FT                   /evidence="ECO:0000269|PubMed:10409658"
FT                   /id="VAR_008942"
FT   VARIANT         250
FT                   /note="L -> H (in LQT1; complete loss of outward potassium
FT                   current; enhances outward potassium current when co-
FT                   transfected with wild type; decreases plasma membrane
FT                   localization; dbSNP:rs199472715)"
FT                   /evidence="ECO:0000269|PubMed:25705178,
FT                   ECO:0000269|PubMed:9799083"
FT                   /id="VAR_008943"
FT   VARIANT         250
FT                   /note="L -> P (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472715)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074960"
FT   VARIANT         254..256
FT                   /note="Missing (in LQT1)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_068294"
FT   VARIANT         254
FT                   /note="V -> L (in LQT1; unknown pathological significance;
FT                   dbSNP:rs120074179)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_074961"
FT   VARIANT         254
FT                   /note="V -> M (in LQT1; associated with M-417 in a patient;
FT                   dbSNP:rs120074179)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085, ECO:0000269|Ref.32"
FT                   /id="VAR_001522"
FT   VARIANT         258
FT                   /note="H -> N (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472717)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_074962"
FT   VARIANT         258
FT                   /note="H -> R (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472718)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_074963"
FT   VARIANT         259
FT                   /note="R -> C (in LQT1; dbSNP:rs199472719)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:16922724, ECO:0000269|PubMed:19716085"
FT                   /id="VAR_068295"
FT   VARIANT         259
FT                   /note="R -> H (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472720)"
FT                   /evidence="ECO:0000269|PubMed:16922724"
FT                   /id="VAR_074964"
FT   VARIANT         259
FT                   /note="R -> L (in LQT1; dbSNP:rs199472720)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_068296"
FT   VARIANT         261
FT                   /note="E -> D (in JLNS1; dbSNP:rs199472721)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_008944"
FT   VARIANT         261
FT                   /note="E -> K (in LQT1; loss of channel activity and no
FT                   interaction with wt KVLQT1 or MINK subunits;
FT                   dbSNP:rs199472722)"
FT                   /evidence="ECO:0000269|PubMed:10409658"
FT                   /id="VAR_001523"
FT   VARIANT         262
FT                   /note="L -> V (in LQT1; dbSNP:rs199472723)"
FT                   /evidence="ECO:0000269|PubMed:16414944,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074965"
FT   VARIANT         265
FT                   /note="T -> I (in LQT1; unknown pathological significance;
FT                   no effect on channel activity; dbSNP:rs199472724)"
FT                   /evidence="ECO:0000269|PubMed:19808498"
FT                   /id="VAR_080331"
FT   VARIANT         266
FT                   /note="L -> P (in LQT1; dbSNP:rs199473460)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_009924"
FT   VARIANT         268
FT                   /note="I -> S (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472725)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074966"
FT   VARIANT         269
FT                   /note="G -> D (in LQT1; dbSNP:rs120074194)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_001524"
FT   VARIANT         269
FT                   /note="G -> S (in LQT1; decreases IKs amplitude;
FT                   accelerates the IKs deactivation; effect on plasma membrane
FT                   localization; reduces up-regulation of Iks through PKA
FT                   activation; dbSNP:rs120074193)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085, ECO:0000269|PubMed:24184248"
FT                   /id="VAR_009925"
FT   VARIANT         272
FT                   /note="G -> D (in LQT1; dbSNP:rs199472726)"
FT                   /evidence="ECO:0000269|PubMed:16414944,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074967"
FT   VARIANT         273
FT                   /note="L -> F (in LQT1; functional channel with reduced
FT                   macroscopic conductance (homomultimers); alteration of
FT                   normal KVLQT1 function (mut/wt homomultimers);
FT                   dbSNP:rs120074180)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:16922724, ECO:0000269|PubMed:19716085,
FT                   ECO:0000269|PubMed:9323054"
FT                   /id="VAR_001525"
FT   VARIANT         273
FT                   /note="L -> R (in LQT1; dbSNP:rs199472727)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_068297"
FT   VARIANT         274
FT                   /note="I -> V (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472728)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074968"
FT   VARIANT         275
FT                   /note="F -> S (in LQT1; dbSNP:rs199472729)"
FT                   /evidence="ECO:0000269|PubMed:12442276"
FT                   /id="VAR_074690"
FT   VARIANT         276
FT                   /note="Missing (in LQT1)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_068298"
FT   VARIANT         277
FT                   /note="S -> L (in LQT1; loss of function mutation acting in
FT                   a dominant-negative manner; dbSNP:rs199472730)"
FT                   /evidence="ECO:0000269|PubMed:12442276,
FT                   ECO:0000269|PubMed:15840476, ECO:0000269|PubMed:19716085,
FT                   ECO:0000269|PubMed:21241800"
FT                   /id="VAR_065777"
FT   VARIANT         277
FT                   /note="S -> P (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473461)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074969"
FT   VARIANT         277
FT                   /note="S -> W (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472730)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_074970"
FT   VARIANT         278
FT                   /note="Y -> H (in LQT1; dbSNP:rs199472731)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_068299"
FT   VARIANT         280
FT                   /note="V -> E (in LQT1; dbSNP:rs199473462)"
FT                   /evidence="ECO:0000269|PubMed:16414944,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074971"
FT   VARIANT         281
FT                   /note="Y -> C (in LQT1; dbSNP:rs199472732)"
FT                   /evidence="ECO:0000269|PubMed:19716085,
FT                   ECO:0000269|PubMed:9927399"
FT                   /id="VAR_008945"
FT   VARIANT         282
FT                   /note="L -> P (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472733)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074972"
FT   VARIANT         283
FT                   /note="A -> G (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473463)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074973"
FT   VARIANT         287
FT                   /note="A -> E (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472735)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_074974"
FT   VARIANT         290
FT                   /note="E -> K (in LQT1; dbSNP:rs199473464)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_068300"
FT   VARIANT         292
FT                   /note="G -> D (in LQT1; dbSNP:rs199472736)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_068301"
FT   VARIANT         293
FT                   /note="R -> C (in LQT1; dbSNP:rs199472737)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_068302"
FT   VARIANT         296
FT                   /note="F -> S (in LQT1; loss of channel activity;
FT                   dbSNP:rs199472738)"
FT                   /evidence="ECO:0000269|PubMed:19808498"
FT                   /id="VAR_080332"
FT   VARIANT         300
FT                   /note="A -> T (in LQT1; dbSNP:rs120074187)"
FT                   /evidence="ECO:0000269|PubMed:9641694"
FT                   /id="VAR_001526"
FT   VARIANT         302
FT                   /note="A -> E (in LQT1; unknown pathological significance;
FT                   dbSNP:rs193922365)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074975"
FT   VARIANT         302
FT                   /note="A -> T (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472739)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_074976"
FT   VARIANT         302
FT                   /note="A -> V (in LQT1; loss of channel activity;
FT                   dbSNP:rs193922365)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085, ECO:0000269|PubMed:19808498"
FT                   /id="VAR_068303"
FT   VARIANT         303
FT                   /note="L -> P (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472740)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074977"
FT   VARIANT         304
FT                   /note="W -> R (in LQT1; dbSNP:rs199473466)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_068304"
FT   VARIANT         305
FT                   /note="W -> R (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472741)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074978"
FT   VARIANT         305
FT                   /note="W -> S (in JLNS1; dbSNP:rs120074186)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085, ECO:0000269|PubMed:9781056"
FT                   /id="VAR_001527"
FT   VARIANT         306
FT                   /note="G -> R (in LQT1; unknown pathological significance;
FT                   dbSNP:rs120074181)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_001528"
FT   VARIANT         306
FT                   /note="G -> V (in LQT1; complete loss of outward potassium
FT                   current; enhances outward potassium current when co-
FT                   transfected with wild type; decreases plasma membrane
FT                   localization; dbSNP:rs199472742)"
FT                   /evidence="ECO:0000269|PubMed:12442276,
FT                   ECO:0000269|PubMed:25705178"
FT                   /id="VAR_074691"
FT   VARIANT         307
FT                   /note="V -> L (in SQT2; gain of function;
FT                   dbSNP:rs120074195)"
FT                   /evidence="ECO:0000269|PubMed:15159330"
FT                   /id="VAR_023841"
FT   VARIANT         308
FT                   /note="V -> D (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473467)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_074979"
FT   VARIANT         309
FT                   /note="T -> R (in LQT1; dbSNP:rs199472743)"
FT                   /id="VAR_001529"
FT   VARIANT         310
FT                   /note="V -> I (in LQT1; dbSNP:rs199472745)"
FT                   /id="VAR_009926"
FT   VARIANT         311
FT                   /note="T -> I (in LQT1 and JLNS1; impairs outward potassium
FT                   current; affects plasma membrane localization;
FT                   dbSNP:rs199472746)"
FT                   /evidence="ECO:0000269|PubMed:25705178,
FT                   ECO:0000269|PubMed:9482580"
FT                   /id="VAR_009927"
FT   VARIANT         312
FT                   /note="T -> I (in LQT1; loss of channel activity;
FT                   dbSNP:rs120074182)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085, ECO:0000269|PubMed:9323054"
FT                   /id="VAR_001530"
FT   VARIANT         313
FT                   /note="I -> M (in LQT1; dbSNP:rs199472747)"
FT                   /evidence="ECO:0000269|PubMed:9024139"
FT                   /id="VAR_001531"
FT   VARIANT         314
FT                   /note="G -> C (in LQT1; unknown pathological significance;
FT                   dbSNP:rs120074184)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074980"
FT   VARIANT         314
FT                   /note="G -> D (in LQT1; dbSNP:rs199472748)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_068305"
FT   VARIANT         314
FT                   /note="G -> R (in LQT1; dbSNP:rs120074184)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_068306"
FT   VARIANT         314
FT                   /note="G -> S (in LQT1; dbSNP:rs120074184)"
FT                   /evidence="ECO:0000269|PubMed:10220144,
FT                   ECO:0000269|PubMed:15840476, ECO:0000269|PubMed:16922724,
FT                   ECO:0000269|PubMed:19716085, ECO:0000269|PubMed:8872472,
FT                   ECO:0000269|PubMed:9693036, ECO:0000269|PubMed:9799083"
FT                   /id="VAR_001532"
FT   VARIANT         315
FT                   /note="Y -> C (in LQT1; dbSNP:rs74462309)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085, ECO:0000269|PubMed:24269949,
FT                   ECO:0000269|PubMed:9693036, ECO:0000269|PubMed:9927399"
FT                   /id="VAR_008946"
FT   VARIANT         315
FT                   /note="Y -> S (in LQT1; dbSNP:rs74462309)"
FT                   /evidence="ECO:0000269|PubMed:10220144"
FT                   /id="VAR_001533"
FT   VARIANT         316
FT                   /note="G -> E (in LQT1; loss of channel activity;
FT                   dbSNP:rs199472749)"
FT                   /evidence="ECO:0000269|PubMed:16414944,
FT                   ECO:0000269|PubMed:16922724, ECO:0000269|PubMed:19808498"
FT                   /id="VAR_074981"
FT   VARIANT         316
FT                   /note="G -> R (in LQT1; dbSNP:rs104894255)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_068307"
FT   VARIANT         316
FT                   /note="G -> V (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472749)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074982"
FT   VARIANT         317
FT                   /note="D -> N (in LQT1; complete loss of outward potassium
FT                   current when expressed alone and even in the presence of
FT                   the wild type at variable ratios; decreases plasma membrane
FT                   localization; dbSNP:rs199472751)"
FT                   /evidence="ECO:0000269|PubMed:25705178,
FT                   ECO:0000269|PubMed:9302275, ECO:0000269|PubMed:9482580"
FT                   /id="VAR_001534"
FT   VARIANT         318
FT                   /note="K -> N (in LQT1; dbSNP:rs199472752)"
FT                   /evidence="ECO:0000269|PubMed:9693036"
FT                   /id="VAR_008947"
FT   VARIANT         320
FT                   /note="P -> A (in LQT1; loss of function mutation acting in
FT                   a dominant-negative manner; dbSNP:rs199472753)"
FT                   /evidence="ECO:0000269|PubMed:19540844"
FT                   /id="VAR_001535"
FT   VARIANT         320
FT                   /note="P -> H (in LQT1; loss of function mutation acting in
FT                   a dominant-negative manner; dbSNP:rs199473470)"
FT                   /evidence="ECO:0000269|PubMed:19540844"
FT                   /id="VAR_065778"
FT   VARIANT         320
FT                   /note="P -> S (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472753)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074983"
FT   VARIANT         322
FT                   /note="T -> A (in LQT1; dbSNP:rs199472754)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085, ECO:0000269|PubMed:24269949"
FT                   /id="VAR_068308"
FT   VARIANT         322
FT                   /note="T -> M (in JLNS1 and LQT1; impairs outward potassium
FT                   current; affects plasma membrane localization;
FT                   dbSNP:rs199472755)"
FT                   /evidence="ECO:0000269|PubMed:16414944,
FT                   ECO:0000269|PubMed:18400097, ECO:0000269|PubMed:19716085,
FT                   ECO:0000269|PubMed:25705178"
FT                   /id="VAR_074692"
FT   VARIANT         325
FT                   /note="G -> R (in LQT1; dbSNP:rs199472756)"
FT                   /evidence="ECO:0000269|PubMed:19716085,
FT                   ECO:0000269|PubMed:9024139"
FT                   /id="VAR_001536"
FT   VARIANT         339
FT                   /note="F -> S (in LQT1; loss of channel activity;
FT                   dbSNP:rs199472759)"
FT                   /evidence="ECO:0000269|PubMed:19808498"
FT                   /id="VAR_080333"
FT   VARIANT         339
FT                   /note="F -> Y (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472759)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074984"
FT   VARIANT         339
FT                   /note="Missing (in LQT1)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:9702906"
FT                   /id="VAR_001537"
FT   VARIANT         341
FT                   /note="A -> E (in LQT1; dbSNP:rs12720459)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_001538"
FT   VARIANT         341
FT                   /note="A -> G (in LQT1; unknown pathological significance;
FT                   dbSNP:rs12720459)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074985"
FT   VARIANT         341
FT                   /note="A -> V (in LQT1; dbSNP:rs12720459)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:16922724, ECO:0000269|PubMed:19716085,
FT                   ECO:0000269|PubMed:8818942, ECO:0000269|PubMed:8872472,
FT                   ECO:0000269|PubMed:9570196"
FT                   /id="VAR_001539"
FT   VARIANT         342
FT                   /note="L -> F (in LQT1; dbSNP:rs199472760)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_001540"
FT   VARIANT         343
FT                   /note="P -> L (in LQT1; dbSNP:rs199472761)"
FT                   /evidence="ECO:0000269|PubMed:16414944,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074986"
FT   VARIANT         343
FT                   /note="P -> R (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472761)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_074987"
FT   VARIANT         343
FT                   /note="P -> S (in LQT1; dbSNP:rs199472762)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_068309"
FT   VARIANT         344
FT                   /note="A -> E (in LQT1; dbSNP:rs199472763)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_068310"
FT   VARIANT         344
FT                   /note="A -> V (in LQT1; dbSNP:rs199472763)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:16922724"
FT                   /id="VAR_001541"
FT   VARIANT         345
FT                   /note="G -> E (in LQT1; dbSNP:rs120074183)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_001542"
FT   VARIANT         345
FT                   /note="G -> R (in LQT1; familial sudden death;
FT                   dbSNP:rs199473471)"
FT                   /evidence="ECO:0000269|PubMed:10220144"
FT                   /id="VAR_008126"
FT   VARIANT         349
FT                   /note="S -> P (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472764)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_074988"
FT   VARIANT         349
FT                   /note="S -> W (in LQT1; dbSNP:rs199472765)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_009928"
FT   VARIANT         350
FT                   /note="G -> R (in LQT1; dbSNP:rs199472824)"
FT                   /evidence="ECO:0000269|PubMed:16414944,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074989"
FT   VARIANT         351
FT                   /note="F -> S (in LQT1; dbSNP:rs199473402)"
FT                   /evidence="ECO:0000269|PubMed:16414944,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074990"
FT   VARIANT         353
FT                   /note="L -> P (in LQT1; dbSNP:rs199473403)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:9693036"
FT                   /id="VAR_009180"
FT   VARIANT         354
FT                   /note="K -> R (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473404)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074991"
FT   VARIANT         360
FT                   /note="R -> G (in LQT1; loss of channel activity;
FT                   dbSNP:rs199473406)"
FT                   /evidence="ECO:0000269|PubMed:19808498"
FT                   /id="VAR_080334"
FT   VARIANT         360
FT                   /note="R -> M (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473407)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074992"
FT   VARIANT         360
FT                   /note="R -> T (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473407)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_074993"
FT   VARIANT         362
FT                   /note="K -> R (in LQT1; dbSNP:rs12720458)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_048025"
FT   VARIANT         365
FT                   /note="N -> H (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473409)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074994"
FT   VARIANT         366
FT                   /note="R -> P (in LQT1; dbSNP:rs199473410)"
FT                   /evidence="ECO:0000269|PubMed:9024139"
FT                   /id="VAR_001543"
FT   VARIANT         366
FT                   /note="R -> Q (in LQT1; dbSNP:rs199473410)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_009929"
FT   VARIANT         366
FT                   /note="R -> W (in LQT1; dbSNP:rs199473411)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085, ECO:0000269|PubMed:9693036"
FT                   /id="VAR_008948"
FT   VARIANT         371
FT                   /note="A -> T (in LQT1; dbSNP:rs199473412)"
FT                   /id="VAR_001544"
FT   VARIANT         372
FT                   /note="A -> D (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473472)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_074995"
FT   VARIANT         373
FT                   /note="S -> P (in LQT1; dbSNP:rs199472766)"
FT                   /evidence="ECO:0000269|PubMed:10220144"
FT                   /id="VAR_008127"
FT   VARIANT         374
FT                   /note="L -> H (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472767)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_068311"
FT   VARIANT         379
FT                   /note="W -> G (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472768)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074996"
FT   VARIANT         380
FT                   /note="R -> S (in LQT1; dbSNP:rs199472771)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_068312"
FT   VARIANT         385
FT                   /note="E -> K (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473473)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074997"
FT   VARIANT         389
FT                   /note="S -> P (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472772)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074998"
FT   VARIANT         389
FT                   /note="S -> Y (in LQT1; dbSNP:rs199472773)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_068313"
FT   VARIANT         391
FT                   /note="T -> I (in LQT1; dbSNP:rs199473474)"
FT                   /id="VAR_009930"
FT   VARIANT         391
FT                   /note="T -> TT (in LQT1; unknown pathological
FT                   significance)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_074999"
FT   VARIANT         392
FT                   /note="W -> R (in LQT1; dbSNP:rs199472774)"
FT                   /evidence="ECO:0000269|PubMed:10220144"
FT                   /id="VAR_008128"
FT   VARIANT         393
FT                   /note="K -> M (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472775)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_075000"
FT   VARIANT         393
FT                   /note="K -> N (in dbSNP:rs12720457)"
FT                   /id="VAR_048026"
FT   VARIANT         397
FT                   /note="R -> W (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472776)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075001"
FT   VARIANT         398
FT                   /note="K -> R (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472777)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075002"
FT   VARIANT         417
FT                   /note="V -> M (in LQT1; associated with M-254 in a patient;
FT                   dbSNP:rs267607197)"
FT                   /evidence="ECO:0000269|Ref.32"
FT                   /id="VAR_010934"
FT   VARIANT         446
FT                   /note="D -> E (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472780)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075003"
FT   VARIANT         448
FT                   /note="P -> L (in LQT1; unknown pathological significance;
FT                   dbSNP:rs12720449)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075004"
FT   VARIANT         448
FT                   /note="P -> R (in LQT1; benign variant; dbSNP:rs12720449)"
FT                   /id="VAR_009931"
FT   VARIANT         451
FT                   /note="R -> W (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472782)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075005"
FT   VARIANT         452
FT                   /note="R -> W (in LQT1; unknown pathological significance;
FT                   dbSNP:rs140452381)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_068314"
FT   VARIANT         455
FT                   /note="H -> Y (in LQT1; loss of channel activity;
FT                   dbSNP:rs199473476)"
FT                   /evidence="ECO:0000269|PubMed:19808498"
FT                   /id="VAR_080335"
FT   VARIANT         460
FT                   /note="G -> S (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472783)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075006"
FT   VARIANT         477
FT                   /note="P -> L (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472784)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075007"
FT   VARIANT         511
FT                   /note="R -> W (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472785)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075008"
FT   VARIANT         518
FT                   /note="R -> G (in LQT1; unknown pathological significance;
FT                   dbSNP:rs17215500)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_075009"
FT   VARIANT         518
FT                   /note="R -> P (in LQT1; unknown pathological significance;
FT                   dbSNP:rs145974930)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_075010"
FT   VARIANT         518
FT                   /note="R -> Q (in LQT1; unknown pathological significance;
FT                   dbSNP:rs145974930)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075011"
FT   VARIANT         520
FT                   /note="M -> R (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473479)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075012"
FT   VARIANT         522
FT                   /note="Y -> S (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472789)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075013"
FT   VARIANT         524
FT                   /note="V -> G (in LQT1; dbSNP:rs199472790)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_068315"
FT   VARIANT         525
FT                   /note="A -> T (in LQT1; dbSNP:rs120074188)"
FT                   /evidence="ECO:0000269|PubMed:10482963,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_009181"
FT   VARIANT         525
FT                   /note="A -> V (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472791)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075014"
FT   VARIANT         526
FT                   /note="K -> E (in LQT1; dbSNP:rs199472792)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_068316"
FT   VARIANT         533
FT                   /note="R -> W (in LQT1; minor changes of wt current
FT                   (homomultimers); positive voltage shift of the channel
FT                   activation (heteromultimers); dbSNP:rs199472793)"
FT                   /evidence="ECO:0000269|PubMed:10728423,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_008949"
FT   VARIANT         539
FT                   /note="R -> Q (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472794)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075015"
FT   VARIANT         539
FT                   /note="R -> W (in LQT1; minor changes of wt current
FT                   (homomultimers); positive voltage shift of the channel
FT                   activation (heteromultimers); dbSNP:rs199472795)"
FT                   /evidence="ECO:0000269|PubMed:10728423,
FT                   ECO:0000269|PubMed:15840476, ECO:0000269|PubMed:19716085"
FT                   /id="VAR_008950"
FT   VARIANT         541
FT                   /note="V -> I (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472796)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075016"
FT   VARIANT         543
FT                   /note="E -> K (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472797)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075017"
FT   VARIANT         546
FT                   /note="S -> L (in LQT1; decreases interaction with KCNE1 C-
FT                   terminus; does not affect plasma membrane localization;
FT                   reduces IKS current density; impairs binding with
FT                   phosphatidylinositol 4,5-bisphosphate; loss of channel
FT                   activity; dbSNP:rs199473480)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085, ECO:0000269|PubMed:19808498,
FT                   ECO:0000269|PubMed:25037568"
FT                   /id="VAR_068317"
FT   VARIANT         547
FT                   /note="Q -> R (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472798)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075018"
FT   VARIANT         548
FT                   /note="G -> D (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472799)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_075019"
FT   VARIANT         554
FT                   /note="V -> A (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473481)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_075020"
FT   VARIANT         555
FT                   /note="R -> C (in LQT1; associated with a fruste phenotype;
FT                   decreases interaction with KCNE1 C-terminus; does not
FT                   affect plasma membrane localization; reduces IKS current
FT                   density; shifts activation of the voltage dependence;
FT                   deactivates more rapidly; impairs binding with
FT                   phosphatidylinositol 4,5-bisphosphate; dbSNP:rs120074185)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085, ECO:0000269|PubMed:25037568,
FT                   ECO:0000269|PubMed:9312006"
FT                   /id="VAR_001545"
FT   VARIANT         555
FT                   /note="R -> H (in LQT1; decreases interaction with KCNE1 C-
FT                   terminus; does not affect plasma membrane localization;
FT                   reduces IKS current density; impairs binding with
FT                   Phosphatidylinositol 4,5-bisphosphate; dbSNP:rs199472800)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085, ECO:0000269|PubMed:25037568"
FT                   /id="VAR_068318"
FT   VARIANT         555
FT                   /note="R -> S (in LQT1; unknown pathological significance;
FT                   dbSNP:rs120074185)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075021"
FT   VARIANT         557
FT                   /note="K -> E (in LQT1; no effect on cell membrane
FT                   localization; slows activation kinetics; accelerates
FT                   deactivation kinetics; rightshifts the voltage-dependent
FT                   activation; does not affect cAMP-dependent up-regulation;
FT                   decreases interaction with KCNE1 C-terminus; does not
FT                   affect plasma membrane localization; does not affect
FT                   phosphorylation at S-27 during cAMP-dependent stimulation;
FT                   reduces IKS current density; impairs binding with
FT                   Phosphatidylinositol 4,5-bisphosphate; dbSNP:rs199472801)"
FT                   /evidence="ECO:0000269|PubMed:19716085,
FT                   ECO:0000269|PubMed:25037568, ECO:0000269|PubMed:25139741"
FT                   /id="VAR_074693"
FT   VARIANT         566
FT                   /note="S -> F (in LQT1; dbSNP:rs199472804)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_009932"
FT   VARIANT         566
FT                   /note="S -> P (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472803)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075022"
FT   VARIANT         566
FT                   /note="S -> Y (in LQT1; dbSNP:rs199472804)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_068319"
FT   VARIANT         567
FT                   /note="I -> S (in LQT1; dbSNP:rs199472805)"
FT                   /evidence="ECO:0000269|PubMed:15840476"
FT                   /id="VAR_068320"
FT   VARIANT         567
FT                   /note="I -> T (in LQT1; dbSNP:rs199472805)"
FT                   /evidence="ECO:0000269|PubMed:16414944,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075023"
FT   VARIANT         568
FT                   /note="G -> R (in LQT1; dbSNP:rs199472807)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_068321"
FT   VARIANT         569
FT                   /note="K -> E (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472808)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075024"
FT   VARIANT         571
FT                   /note="S -> L (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472809)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075025"
FT   VARIANT         573
FT                   /note="F -> L (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472810)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_075026"
FT   VARIANT         583
FT                   /note="R -> C (in LQT1; dbSNP:rs17221854)"
FT                   /id="VAR_009933"
FT   VARIANT         583
FT                   /note="R -> H (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473482)"
FT                   /evidence="ECO:0000269|PubMed:16414944"
FT                   /id="VAR_075027"
FT   VARIANT         586
FT                   /note="N -> D (in LQT1; decreases outward potassium
FT                   current; decreases plasma membrane localization;
FT                   dbSNP:rs199472812)"
FT                   /evidence="ECO:0000269|PubMed:16414944,
FT                   ECO:0000269|PubMed:25705178"
FT                   /id="VAR_074694"
FT   VARIANT         587
FT                   /note="T -> M (in LQT1; dbSNP:rs120074189)"
FT                   /evidence="ECO:0000269|PubMed:10024302,
FT                   ECO:0000269|PubMed:15840476, ECO:0000269|PubMed:19716085,
FT                   ECO:0000269|PubMed:9799083"
FT                   /id="VAR_008951"
FT   VARIANT         589
FT                   /note="G -> D (in LQT1 and JLNS1; affects plasma membrane
FT                   localization; strongly reduces potassium current; impairs
FT                   binding to AKAP9 and the targeting protein kinase A (PKA)
FT                   catalytic subunit and protein phosphatase 1 (PP1);
FT                   dbSNP:rs120074190)"
FT                   /evidence="ECO:0000269|PubMed:11799244,
FT                   ECO:0000269|PubMed:18165683, ECO:0000269|PubMed:25037568,
FT                   ECO:0000269|PubMed:25705178"
FT                   /id="VAR_008952"
FT   VARIANT         590
FT                   /note="A -> T (in LQT1; reduces IKs density and causes a
FT                   right-shift of the current?voltage relation of channel
FT                   activation; reduces cell surface expression; no effect on
FT                   interaction with AKAP9; does not affect the cAMP-dependent
FT                   IKs up-regulation; dbSNP:rs199472813)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:24713462"
FT                   /id="VAR_068322"
FT   VARIANT         591
FT                   /note="R -> C (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473483)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075028"
FT   VARIANT         591
FT                   /note="R -> H (in LQT1; dbSNP:rs199472814)"
FT                   /evidence="ECO:0000269|PubMed:10024302,
FT                   ECO:0000269|PubMed:15840476, ECO:0000269|PubMed:19716085"
FT                   /id="VAR_008953"
FT   VARIANT         594
FT                   /note="R -> P (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472815)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075029"
FT   VARIANT         594
FT                   /note="R -> Q (in LQT1; dbSNP:rs199472815)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:19716085"
FT                   /id="VAR_009934"
FT   VARIANT         596
FT                   /note="E -> K (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199472816)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075030"
FT   VARIANT         596
FT                   /note="Missing (in LQT1; unknown pathological
FT                   significance)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075031"
FT   VARIANT         600
FT                   /note="T -> M (in LQT1; unknown pathological significance;
FT                   dbSNP:rs34516117)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075032"
FT   VARIANT         611
FT                   /note="D -> N (in LQT1; unknown pathological significance;
FT                   dbSNP:rs147445322)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075033"
FT   VARIANT         614
FT                   /note="Missing (in LQT1; unknown pathological significance;
FT                   dbSNP:rs397508101)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075034"
FT   VARIANT         619
FT                   /note="L -> M (in LQT1; decreases outward potassium
FT                   current; decreases plasma membrane localization;
FT                   dbSNP:rs199472819)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:25705178"
FT                   /id="VAR_068323"
FT   VARIANT         626
FT                   /note="G -> S (in LQT1; dbSNP:rs199472821)"
FT                   /evidence="ECO:0000269|PubMed:15840476,
FT                   ECO:0000269|PubMed:16922724, ECO:0000269|PubMed:19716085"
FT                   /id="VAR_068324"
FT   VARIANT         635
FT                   /note="G -> R (in LQT1; unknown pathological significance;
FT                   dbSNP:rs199473484)"
FT                   /evidence="ECO:0000269|PubMed:19716085"
FT                   /id="VAR_075035"
FT   VARIANT         643
FT                   /note="G -> S (in dbSNP:rs1800172)"
FT                   /evidence="ECO:0000269|PubMed:9799083"
FT                   /id="VAR_008954"
FT   MUTAGEN         27
FT                   /note="S->A: No phosphorylation by PKA. Decreases delayed
FT                   rectifier potassium channel activity."
FT                   /evidence="ECO:0000269|PubMed:11799244"
FT   MUTAGEN         324
FT                   /note="V->L: Has a voltage-gated potassium channel
FT                   activity. Inhibition of voltage-gated potassium channel
FT                   activity by KCNE4."
FT                   /evidence="ECO:0000269|PubMed:19687231"
FT   MUTAGEN         326
FT                   /note="K->R: Has a voltage-gated potassium channel
FT                   activity. Disrupts KCNE4-mediated voltage-gated potassium
FT                   channel activity inhibition."
FT                   /evidence="ECO:0000269|PubMed:19687231"
FT   MUTAGEN         327
FT                   /note="T->V: Has a voltage-gated potassium channel
FT                   activity. Disrupts KCNE4-mediated voltage-gated potassium
FT                   channel activity inhibition."
FT                   /evidence="ECO:0000269|PubMed:19687231"
FT   MUTAGEN         328
FT                   /note="I->L: Has a voltage-gated potassium channel
FT                   activity. Inhibition of voltage-gated potassium channel
FT                   activity by KCNE4."
FT                   /evidence="ECO:0000269|PubMed:19687231"
FT   MUTAGEN         338
FT                   /note="S->C: Inhibits voltage-gated potassium channel
FT                   activity."
FT                   /evidence="ECO:0000269|PubMed:19687231"
FT   MUTAGEN         340
FT                   /note="F->C: Inhibits voltage-gated potassium channel
FT                   activity."
FT                   /evidence="ECO:0000269|PubMed:19687231"
FT   MUTAGEN         375
FT                   /note="I->D: Reduced protein expression, probably due to
FT                   misfolding and proteasomal degradation. No detectable
FT                   electrophysiological activity. Reduced electrophysiological
FT                   activity in the presence of KCNE1."
FT                   /evidence="ECO:0000269|PubMed:25441029"
FT   MUTAGEN         516
FT                   /note="V->D: Reduced protein expression, probably due to
FT                   misfolding and proteasomal degradation. Significantly
FT                   reduced electrophysiological activity. Reduced
FT                   electrophysiological activity in the presence of KCNE1."
FT                   /evidence="ECO:0000269|PubMed:25441029"
FT   MUTAGEN         589
FT                   /note="G->M: No effect."
FT                   /evidence="ECO:0000269|PubMed:18165683"
FT   MUTAGEN         590
FT                   /note="A->W: Reduced cell surface expression and strongly
FT                   reduced potassium current."
FT                   /evidence="ECO:0000269|PubMed:18165683"
FT   MUTAGEN         593
FT                   /note="N->G: Reduced cell surface expression and moderately
FT                   reduced potassium current."
FT                   /evidence="ECO:0000269|PubMed:18165683"
FT   MUTAGEN         602
FT                   /note="L->A: Does not interact with AKAP9 and the targeting
FT                   protein kinase A (PKA) catalytic subunit and protein
FT                   phosphatase 1 (PP1); when associated with I-609."
FT                   /evidence="ECO:0000269|PubMed:11799244"
FT   MUTAGEN         609
FT                   /note="I->A: Does not interact with AKAP9 and the kinase A
FT                   (PKA) catalytic subunit and protein phosphatase 1 (PP1);
FT                   when associated with L-602."
FT                   /evidence="ECO:0000269|PubMed:11799244"
FT   CONFLICT        64..65
FT                   /note="PA -> HV (in Ref. 4; CAB44649)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        370
FT                   /note="Missing (in Ref. 2; AAC05705)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        607..608
FT                   /note="AL -> VI (in Ref. 5; AAM94040)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        619..644
FT                   /note="LHGGSTPGSGGPPREGGAHITQPCGS -> MQQGGPTCNSRSQVVASNE
FT                   (in Ref. 5; AAM94040)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        648..649
FT                   /note="VD -> IN (in Ref. 5; AAM94040)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        658
FT                   /note="T -> S (in Ref. 5; AAM94040)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        669..670
FT                   /note="RR -> QT (in Ref. 5; AAM94040)"
FT                   /evidence="ECO:0000305"
FT   HELIX           105..114
FT                   /evidence="ECO:0007829|PDB:6UZZ"
FT   HELIX           121..142
FT                   /evidence="ECO:0007829|PDB:6UZZ"
FT   TURN            146..150
FT                   /evidence="ECO:0007829|PDB:6UZZ"
FT   HELIX           151..154
FT                   /evidence="ECO:0007829|PDB:6UZZ"
FT   HELIX           157..177
FT                   /evidence="ECO:0007829|PDB:6UZZ"
FT   HELIX           178..180
FT                   /evidence="ECO:0007829|PDB:6UZZ"
FT   STRAND          181..184
FT                   /evidence="ECO:0007829|PDB:6UZZ"
FT   HELIX           187..193
FT                   /evidence="ECO:0007829|PDB:6UZZ"
FT   HELIX           197..215
FT                   /evidence="ECO:0007829|PDB:6UZZ"
FT   HELIX           224..236
FT                   /evidence="ECO:0007829|PDB:6UZZ"
FT   HELIX           237..240
FT                   /evidence="ECO:0007829|PDB:6UZZ"
FT   HELIX           243..245
FT                   /evidence="ECO:0007829|PDB:6V00"
FT   HELIX           246..257
FT                   /evidence="ECO:0007829|PDB:6UZZ"
FT   HELIX           259..284
FT                   /evidence="ECO:0007829|PDB:6UZZ"
FT   STRAND          290..292
FT                   /evidence="ECO:0007829|PDB:6V00"
FT   HELIX           299..310
FT                   /evidence="ECO:0007829|PDB:6UZZ"
FT   STRAND          316..318
FT                   /evidence="ECO:0007829|PDB:6UZZ"
FT   HELIX           323..335
FT                   /evidence="ECO:0007829|PDB:6UZZ"
FT   HELIX           338..357
FT                   /evidence="ECO:0007829|PDB:6UZZ"
FT   HELIX           359..384
FT                   /evidence="ECO:0007829|PDB:4V0C"
FT   STRAND          386..391
FT                   /evidence="ECO:0007829|PDB:4V0C"
FT   HELIX           392..394
FT                   /evidence="ECO:0007829|PDB:4V0C"
FT   HELIX           502..533
FT                   /evidence="ECO:0007829|PDB:4V0C"
FT   HELIX           538..566
FT                   /evidence="ECO:0007829|PDB:6UZZ"
FT   HELIX           588..609
FT                   /evidence="ECO:0007829|PDB:3HFE"
SQ   SEQUENCE   676 AA;  74699 MW;  ADFCA9E2B9763B21 CRC64;
     MAAASSPPRA ERKRWGWGRL PGARRGSAGL AKKCPFSLEL AEGGPAGGAL YAPIAPGAPG
     PAPPASPAAP AAPPVASDLG PRPPVSLDPR VSIYSTRRPV LARTHVQGRV YNFLERPTGW
     KCFVYHFAVF LIVLVCLIFS VLSTIEQYAA LATGTLFWME IVLVVFFGTE YVVRLWSAGC
     RSKYVGLWGR LRFARKPISI IDLIVVVASM VVLCVGSKGQ VFATSAIRGI RFLQILRMLH
     VDRQGGTWRL LGSVVFIHRQ ELITTLYIGF LGLIFSSYFV YLAEKDAVNE SGRVEFGSYA
     DALWWGVVTV TTIGYGDKVP QTWVGKTIAS CFSVFAISFF ALPAGILGSG FALKVQQKQR
     QKHFNRQIPA AASLIQTAWR CYAAENPDSS TWKIYIRKAP RSHTLLSPSP KPKKSVVVKK
     KKFKLDKDNG VTPGEKMLTV PHITCDPPEE RRLDHFSVDG YDSSVRKSPT LLEVSMPHFM
     RTNSFAEDLD LEGETLLTPI THISQLREHH RATIKVIRRM QYFVAKKKFQ QARKPYDVRD
     VIEQYSQGHL NLMVRIKELQ RRLDQSIGKP SLFISVSEKS KDRGSNTIGA RLNRVEDKVT
     QLDQRLALIT DMLHQLLSLH GGSTPGSGGP PREGGAHITQ PCGSGGSVDP ELFLPSNTLP
     TYEQLTVPRR GPDEGS
 
 
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