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SMG8_HUMAN
ID   SMG8_HUMAN              Reviewed;         991 AA.
AC   Q8ND04; Q8N5U5; Q8TDN0; Q9H5P5; Q9NVQ1;
DT   02-OCT-2007, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2002, sequence version 1.
DT   03-AUG-2022, entry version 136.
DE   RecName: Full=Nonsense-mediated mRNA decay factor SMG8 {ECO:0000312|HGNC:HGNC:25551};
DE   AltName: Full=Amplified in breast cancer gene 2 protein {ECO:0000303|Ref.1};
DE   AltName: Full=Protein smg-8 homolog;
GN   Name=SMG8; Synonyms=ABC2, C17orf71;
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 2).
RA   Wu G.G., Couch F.J.;
RT   "Cloning and characterization of three novel amplified and overexpressed
RT   genes from breast cancer.";
RL   Submitted (FEB-2001) to the EMBL/GenBank/DDBJ databases.
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1).
RC   TISSUE=Adipose tissue;
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   [3]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1).
RC   TISSUE=Testis;
RX   PubMed=17974005; DOI=10.1186/1471-2164-8-399;
RA   Bechtel S., Rosenfelder H., Duda A., Schmidt C.P., Ernst U.,
RA   Wellenreuther R., Mehrle A., Schuster C., Bahr A., Bloecker H., Heubner D.,
RA   Hoerlein A., Michel G., Wedler H., Koehrer K., Ottenwaelder B., Poustka A.,
RA   Wiemann S., Schupp I.;
RT   "The full-ORF clone resource of the German cDNA consortium.";
RL   BMC Genomics 8:399-399(2007).
RN   [4]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=16625196; DOI=10.1038/nature04689;
RA   Zody M.C., Garber M., Adams D.J., Sharpe T., Harrow J., Lupski J.R.,
RA   Nicholson C., Searle S.M., Wilming L., Young S.K., Abouelleil A.,
RA   Allen N.R., Bi W., Bloom T., Borowsky M.L., Bugalter B.E., Butler J.,
RA   Chang J.L., Chen C.-K., Cook A., Corum B., Cuomo C.A., de Jong P.J.,
RA   DeCaprio D., Dewar K., FitzGerald M., Gilbert J., Gibson R., Gnerre S.,
RA   Goldstein S., Grafham D.V., Grocock R., Hafez N., Hagopian D.S., Hart E.,
RA   Norman C.H., Humphray S., Jaffe D.B., Jones M., Kamal M., Khodiyar V.K.,
RA   LaButti K., Laird G., Lehoczky J., Liu X., Lokyitsang T., Loveland J.,
RA   Lui A., Macdonald P., Major J.E., Matthews L., Mauceli E., McCarroll S.A.,
RA   Mihalev A.H., Mudge J., Nguyen C., Nicol R., O'Leary S.B., Osoegawa K.,
RA   Schwartz D.C., Shaw-Smith C., Stankiewicz P., Steward C., Swarbreck D.,
RA   Venkataraman V., Whittaker C.A., Yang X., Zimmer A.R., Bradley A.,
RA   Hubbard T., Birren B.W., Rogers J., Lander E.S., Nusbaum C.;
RT   "DNA sequence of human chromosome 17 and analysis of rearrangement in the
RT   human lineage.";
RL   Nature 440:1045-1049(2006).
RN   [5]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RA   Mural R.J., Istrail S., Sutton G.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 (SEP-2005) to the EMBL/GenBank/DDBJ databases.
RN   [6]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] OF 265-991 (ISOFORM 1), AND
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] OF 5-991 (ISOFORM 3).
RC   TISSUE=Brain, and Colon;
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   [7]
RP   PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-469, AND IDENTIFICATION BY
RP   MASS SPECTROMETRY [LARGE SCALE ANALYSIS].
RC   TISSUE=Cervix carcinoma;
RX   PubMed=18669648; DOI=10.1073/pnas.0805139105;
RA   Dephoure N., Zhou C., Villen J., Beausoleil S.A., Bakalarski C.E.,
RA   Elledge S.J., Gygi S.P.;
RT   "A quantitative atlas of mitotic phosphorylation.";
RL   Proc. Natl. Acad. Sci. U.S.A. 105:10762-10767(2008).
RN   [8]
RP   FUNCTION, PHOSPHORYLATION, IDENTIFICATION BY MASS SPECTROMETRY, AND
RP   IDENTIFICATION IN THE SMG1C COMPLEX.
RX   PubMed=19417104; DOI=10.1101/gad.1767209;
RA   Yamashita A., Izumi N., Kashima I., Ohnishi T., Saari B., Katsuhata Y.,
RA   Muramatsu R., Morita T., Iwamatsu A., Hachiya T., Kurata R., Hirano H.,
RA   Anderson P., Ohno S.;
RT   "SMG-8 and SMG-9, two novel subunits of the SMG-1 complex, regulate
RT   remodeling of the mRNA surveillance complex during nonsense-mediated mRNA
RT   decay.";
RL   Genes Dev. 23:1091-1105(2009).
RN   [9]
RP   IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS].
RC   TISSUE=Cervix carcinoma;
RX   PubMed=20068231; DOI=10.1126/scisignal.2000475;
RA   Olsen J.V., Vermeulen M., Santamaria A., Kumar C., Miller M.L.,
RA   Jensen L.J., Gnad F., Cox J., Jensen T.S., Nigg E.A., Brunak S., Mann M.;
RT   "Quantitative phosphoproteomics reveals widespread full phosphorylation
RT   site occupancy during mitosis.";
RL   Sci. Signal. 3:RA3-RA3(2010).
RN   [10]
RP   IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS].
RX   PubMed=21269460; DOI=10.1186/1752-0509-5-17;
RA   Burkard T.R., Planyavsky M., Kaupe I., Breitwieser F.P., Buerckstuemmer T.,
RA   Bennett K.L., Superti-Furga G., Colinge J.;
RT   "Initial characterization of the human central proteome.";
RL   BMC Syst. Biol. 5:17-17(2011).
RN   [11]
RP   INTERACTION WITH SMG1 AND SMG9, AND ELECTRON MICROSCOPY OF THE SMG1C
RP   COMPLEX.
RX   PubMed=21245168; DOI=10.1101/gad.606911;
RA   Arias-Palomo E., Yamashita A., Fernandez I.S., Nunez-Ramirez R., Bamba Y.,
RA   Izumi N., Ohno S., Llorca O.;
RT   "The nonsense-mediated mRNA decay SMG-1 kinase is regulated by large-scale
RT   conformational changes controlled by SMG-8.";
RL   Genes Dev. 25:153-164(2011).
RN   [12]
RP   SUBUNIT.
RX   PubMed=20817927; DOI=10.1093/nar/gkq749;
RA   Fernandez I.S., Yamashita A., Arias-Palomo E., Bamba Y., Bartolome R.A.,
RA   Canales M.A., Teixido J., Ohno S., Llorca O.;
RT   "Characterization of SMG-9, an essential component of the nonsense-mediated
RT   mRNA decay SMG1C complex.";
RL   Nucleic Acids Res. 39:347-358(2011).
RN   [13]
RP   PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-668, AND IDENTIFICATION BY
RP   MASS SPECTROMETRY [LARGE SCALE ANALYSIS].
RX   PubMed=21406692; DOI=10.1126/scisignal.2001570;
RA   Rigbolt K.T., Prokhorova T.A., Akimov V., Henningsen J., Johansen P.T.,
RA   Kratchmarova I., Kassem M., Mann M., Olsen J.V., Blagoev B.;
RT   "System-wide temporal characterization of the proteome and phosphoproteome
RT   of human embryonic stem cell differentiation.";
RL   Sci. Signal. 4:RS3-RS3(2011).
RN   [14]
RP   PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-115; SER-668; SER-742 AND
RP   SER-895, AND IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS].
RC   TISSUE=Cervix carcinoma, and Erythroleukemia;
RX   PubMed=23186163; DOI=10.1021/pr300630k;
RA   Zhou H., Di Palma S., Preisinger C., Peng M., Polat A.N., Heck A.J.,
RA   Mohammed S.;
RT   "Toward a comprehensive characterization of a human cancer cell
RT   phosphoproteome.";
RL   J. Proteome Res. 12:260-271(2013).
RN   [15]
RP   IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS].
RC   TISSUE=Liver;
RX   PubMed=24275569; DOI=10.1016/j.jprot.2013.11.014;
RA   Bian Y., Song C., Cheng K., Dong M., Wang F., Huang J., Sun D., Wang L.,
RA   Ye M., Zou H.;
RT   "An enzyme assisted RP-RPLC approach for in-depth analysis of human liver
RT   phosphoproteome.";
RL   J. Proteomics 96:253-262(2014).
RN   [16]
RP   METHYLATION [LARGE SCALE ANALYSIS] AT ARG-898, AND IDENTIFICATION BY MASS
RP   SPECTROMETRY [LARGE SCALE ANALYSIS].
RC   TISSUE=Colon carcinoma;
RX   PubMed=24129315; DOI=10.1074/mcp.o113.027870;
RA   Guo A., Gu H., Zhou J., Mulhern D., Wang Y., Lee K.A., Yang V., Aguiar M.,
RA   Kornhauser J., Jia X., Ren J., Beausoleil S.A., Silva J.C., Vemulapalli V.,
RA   Bedford M.T., Comb M.J.;
RT   "Immunoaffinity enrichment and mass spectrometry analysis of protein
RT   methylation.";
RL   Mol. Cell. Proteomics 13:372-387(2014).
RN   [17]
RP   INTERACTION WITH SMG1.
RX   PubMed=33205750; DOI=10.7554/elife.63042;
RA   Lopez-Perrote A., Hug N., Gonzalez-Corpas A., Rodriguez C.F., Serna M.,
RA   Garcia-Martin C., Boskovic J., Fernandez-Leiro R., Caceres J.F., Llorca O.;
RT   "Regulation of RUVBL1-RUVBL2 AAA-ATPases by the nonsense-mediated mRNA
RT   decay factor DHX34, as evidenced by Cryo-EM.";
RL   Elife 9:0-0(2020).
RN   [18]
RP   VARIANTS ALKUS ARG-208 AND 839-ARG--GLN-991 DEL, AND INVOLVEMENT IN ALKUS.
RX   PubMed=33242396; DOI=10.1016/j.ajhg.2020.11.007;
RA   Alzahrani F., Kuwahara H., Long Y., Al-Owain M., Tohary M., AlSayed M.,
RA   Mahnashi M., Fathi L., Alnemer M., Al-Hamed M.H., Lemire G., Boycott K.M.,
RA   Hashem M., Han W., Al-Maawali A., Al Mahrizi F., Al-Thihli K., Gao X.,
RA   Alkuraya F.S.;
RT   "Recessive, deleterious variants in SMG8 expand the role of nonsense-
RT   mediated decay in developmental disorders in humans.";
RL   Am. J. Hum. Genet. 107:1178-1185(2020).
CC   -!- FUNCTION: Involved in nonsense-mediated decay (NMD) of mRNAs containing
CC       premature stop codons. Is recruited by release factors to stalled
CC       ribosomes together with SMG1 and SMG9 (forming the SMG1C protein kinase
CC       complex) and, in the SMG1C complex, is required to mediate the
CC       recruitment of SMG1 to the ribosome:SURF complex and to suppress SMG1
CC       kinase activity until the ribosome:SURF complex locates the exon
CC       junction complex (EJC). Acts as a regulator of kinase activity.
CC       {ECO:0000269|PubMed:19417104}.
CC   -!- SUBUNIT: Component of the SMG1C complex composed of SMG1, SMG8 and
CC       SMG9; the recruitment of SMG8 to SMG1 N-terminus induces a large
CC       conformational change in the SMG1 C-terminal head domain containing the
CC       catalytic domain (PubMed:33205750). Forms heterodimers with SMG9; this
CC       assembly form may represent a SMG1C intermediate form.
CC       {ECO:0000269|PubMed:19417104, ECO:0000269|PubMed:20817927,
CC       ECO:0000269|PubMed:33205750}.
CC   -!- INTERACTION:
CC       Q8ND04; Q9H0W8: SMG9; NbExp=6; IntAct=EBI-3903643, EBI-2872322;
CC   -!- ALTERNATIVE PRODUCTS:
CC       Event=Alternative splicing; Named isoforms=3;
CC       Name=1;
CC         IsoId=Q8ND04-1; Sequence=Displayed;
CC       Name=2; Synonyms=ABC2;
CC         IsoId=Q8ND04-2; Sequence=VSP_028166;
CC       Name=3;
CC         IsoId=Q8ND04-3; Sequence=VSP_028164, VSP_028165;
CC   -!- PTM: Phosphorylated by SMG1. {ECO:0000269|PubMed:19417104}.
CC   -!- DISEASE: Alzahrani-Kuwahara syndrome (ALKUS) [MIM:619268]: An autosomal
CC       recessive disorder characterized by severe global developmental delay,
CC       impaired intellectual function, poor or absent speech, microcephaly,
CC       and facial dysmorphism. Additional variable features include early-
CC       onset cataracts, hypotonia, lower limb spasticity, and congenital heart
CC       malformations. {ECO:0000269|PubMed:33242396}. Note=The disease is
CC       caused by variants affecting the gene represented in this entry.
CC   -!- SIMILARITY: Belongs to the SMG8 family. {ECO:0000305}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=AAH20957.1; Type=Erroneous initiation; Note=Truncated N-terminus.; Evidence={ECO:0000305};
CC       Sequence=BAA91699.1; Type=Erroneous initiation; Note=Truncated N-terminus.; Evidence={ECO:0000305};
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DR   EMBL; AF349467; AAL83913.1; -; mRNA.
DR   EMBL; AK001449; BAA91699.1; ALT_INIT; mRNA.
DR   EMBL; AK026858; BAB15576.1; -; mRNA.
DR   EMBL; AL834490; CAD39148.1; -; mRNA.
DR   EMBL; AC099850; -; NOT_ANNOTATED_CDS; Genomic_DNA.
DR   EMBL; CH471109; EAW94415.1; -; Genomic_DNA.
DR   EMBL; BC020957; AAH20957.1; ALT_INIT; mRNA.
DR   EMBL; BC031604; AAH31604.1; -; mRNA.
DR   CCDS; CCDS11615.1; -. [Q8ND04-1]
DR   RefSeq; NP_060619.4; NM_018149.6. [Q8ND04-1]
DR   PDB; 6L54; EM; 3.43 A; B=1-991.
DR   PDB; 6SYT; EM; 3.45 A; B=1-991.
DR   PDB; 6Z3R; EM; 2.97 A; B=1-991.
DR   PDB; 7PW4; EM; 3.27 A; B=1-991.
DR   PDB; 7PW5; EM; 3.40 A; B=1-991.
DR   PDB; 7PW8; EM; 2.82 A; B=1-991.
DR   PDBsum; 6L54; -.
DR   PDBsum; 6SYT; -.
DR   PDBsum; 6Z3R; -.
DR   PDBsum; 7PW4; -.
DR   PDBsum; 7PW5; -.
DR   PDBsum; 7PW8; -.
DR   AlphaFoldDB; Q8ND04; -.
DR   SMR; Q8ND04; -.
DR   BioGRID; 120480; 120.
DR   IntAct; Q8ND04; 24.
DR   STRING; 9606.ENSP00000438748; -.
DR   iPTMnet; Q8ND04; -.
DR   PhosphoSitePlus; Q8ND04; -.
DR   BioMuta; SMG8; -.
DR   DMDM; 74715258; -.
DR   EPD; Q8ND04; -.
DR   jPOST; Q8ND04; -.
DR   MassIVE; Q8ND04; -.
DR   MaxQB; Q8ND04; -.
DR   PaxDb; Q8ND04; -.
DR   PeptideAtlas; Q8ND04; -.
DR   PRIDE; Q8ND04; -.
DR   ProteomicsDB; 72968; -. [Q8ND04-1]
DR   ProteomicsDB; 72969; -. [Q8ND04-2]
DR   ProteomicsDB; 72970; -. [Q8ND04-3]
DR   Antibodypedia; 31075; 55 antibodies from 18 providers.
DR   DNASU; 55181; -.
DR   Ensembl; ENST00000300917.10; ENSP00000300917.4; ENSG00000167447.13. [Q8ND04-1]
DR   Ensembl; ENST00000543872.6; ENSP00000438748.2; ENSG00000167447.13. [Q8ND04-1]
DR   Ensembl; ENST00000578922.1; ENSP00000462119.1; ENSG00000167447.13. [Q8ND04-3]
DR   GeneID; 55181; -.
DR   KEGG; hsa:55181; -.
DR   MANE-Select; ENST00000300917.10; ENSP00000300917.4; NM_018149.7; NP_060619.4.
DR   UCSC; uc002ixi.4; human. [Q8ND04-1]
DR   CTD; 55181; -.
DR   DisGeNET; 55181; -.
DR   GeneCards; SMG8; -.
DR   HGNC; HGNC:25551; SMG8.
DR   HPA; ENSG00000167447; Low tissue specificity.
DR   MIM; 613175; gene.
DR   MIM; 619268; phenotype.
DR   neXtProt; NX_Q8ND04; -.
DR   OpenTargets; ENSG00000167447; -.
DR   PharmGKB; PA142672219; -.
DR   VEuPathDB; HostDB:ENSG00000167447; -.
DR   eggNOG; KOG3692; Eukaryota.
DR   GeneTree; ENSGT00390000018533; -.
DR   HOGENOM; CLU_008116_0_0_1; -.
DR   InParanoid; Q8ND04; -.
DR   OMA; HCTVKDS; -.
DR   OrthoDB; 645776at2759; -.
DR   PhylomeDB; Q8ND04; -.
DR   TreeFam; TF323445; -.
DR   PathwayCommons; Q8ND04; -.
DR   Reactome; R-HSA-975957; Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC).
DR   SignaLink; Q8ND04; -.
DR   BioGRID-ORCS; 55181; 82 hits in 1086 CRISPR screens.
DR   ChiTaRS; SMG8; human.
DR   GenomeRNAi; 55181; -.
DR   Pharos; Q8ND04; Tdark.
DR   PRO; PR:Q8ND04; -.
DR   Proteomes; UP000005640; Chromosome 17.
DR   RNAct; Q8ND04; protein.
DR   Bgee; ENSG00000167447; Expressed in secondary oocyte and 191 other tissues.
DR   ExpressionAtlas; Q8ND04; baseline and differential.
DR   Genevisible; Q8ND04; HS.
DR   GO; GO:0005829; C:cytosol; TAS:Reactome.
DR   GO; GO:0000184; P:nuclear-transcribed mRNA catabolic process, nonsense-mediated decay; IMP:UniProtKB.
DR   GO; GO:0045859; P:regulation of protein kinase activity; IMP:UniProtKB.
DR   InterPro; IPR028802; SMG8.
DR   InterPro; IPR019354; SMG8/SMG9.
DR   PANTHER; PTHR13091; PTHR13091; 1.
DR   Pfam; PF10220; Smg8_Smg9; 1.
PE   1: Evidence at protein level;
KW   3D-structure; Alternative splicing; Cataract; Disease variant;
KW   Intellectual disability; Methylation; Nonsense-mediated mRNA decay;
KW   Phosphoprotein; Reference proteome.
FT   CHAIN           1..991
FT                   /note="Nonsense-mediated mRNA decay factor SMG8"
FT                   /id="PRO_0000304974"
FT   REGION          16..41
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   REGION          82..127
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   REGION          279..299
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   REGION          653..722
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        671..685
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        686..709
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   MOD_RES         115
FT                   /note="Phosphoserine"
FT                   /evidence="ECO:0007744|PubMed:23186163"
FT   MOD_RES         469
FT                   /note="Phosphoserine"
FT                   /evidence="ECO:0007744|PubMed:18669648"
FT   MOD_RES         668
FT                   /note="Phosphoserine"
FT                   /evidence="ECO:0007744|PubMed:21406692,
FT                   ECO:0007744|PubMed:23186163"
FT   MOD_RES         742
FT                   /note="Phosphoserine"
FT                   /evidence="ECO:0007744|PubMed:23186163"
FT   MOD_RES         895
FT                   /note="Phosphoserine"
FT                   /evidence="ECO:0007744|PubMed:23186163"
FT   MOD_RES         898
FT                   /note="Omega-N-methylarginine"
FT                   /evidence="ECO:0007744|PubMed:24129315"
FT   VAR_SEQ         588
FT                   /note="E -> S (in isoform 3)"
FT                   /evidence="ECO:0000303|PubMed:15489334"
FT                   /id="VSP_028164"
FT   VAR_SEQ         589..991
FT                   /note="Missing (in isoform 3)"
FT                   /evidence="ECO:0000303|PubMed:15489334"
FT                   /id="VSP_028165"
FT   VAR_SEQ         945
FT                   /note="T -> TLPPDGLWVLRFPYAYGLREDLVSPXGKKQEIP (in isoform
FT                   2)"
FT                   /evidence="ECO:0000303|Ref.1"
FT                   /id="VSP_028166"
FT   VARIANT         208
FT                   /note="H -> R (in ALKUS)"
FT                   /evidence="ECO:0000269|PubMed:33242396"
FT                   /id="VAR_085550"
FT   VARIANT         280
FT                   /note="P -> L (in dbSNP:rs8068240)"
FT                   /id="VAR_035137"
FT   VARIANT         839..991
FT                   /note="Missing (in ALKUS)"
FT                   /evidence="ECO:0000269|PubMed:33242396"
FT                   /id="VAR_085551"
FT   CONFLICT        278
FT                   /note="E -> V (in Ref. 2; BAB15576)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        411
FT                   /note="R -> W (in Ref. 2; BAB15576)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        488
FT                   /note="F -> L (in Ref. 1; AAL83913)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        491
FT                   /note="I -> F (in Ref. 1; AAL83913)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        493
FT                   /note="T -> P (in Ref. 1; AAL83913)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        520
FT                   /note="T -> P (in Ref. 1; AAL83913)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        522
FT                   /note="T -> P (in Ref. 1; AAL83913)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        532
FT                   /note="L -> R (in Ref. 1; AAL83913)"
FT                   /evidence="ECO:0000305"
FT   HELIX           7..11
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   HELIX           40..42
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   STRAND          48..54
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   STRAND          58..61
FT                   /evidence="ECO:0007829|PDB:6Z3R"
FT   HELIX           63..71
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   STRAND          72..74
FT                   /evidence="ECO:0007829|PDB:6Z3R"
FT   STRAND          137..143
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   TURN            144..147
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   STRAND          148..154
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   HELIX           159..171
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   HELIX           182..203
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   STRAND          208..218
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   HELIX           222..234
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   HELIX           238..244
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   STRAND          246..248
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   HELIX           252..257
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   STRAND          258..261
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   STRAND          264..270
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   HELIX           296..314
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   TURN            322..324
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   STRAND          325..328
FT                   /evidence="ECO:0007829|PDB:6SYT"
FT   STRAND          331..333
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   STRAND          336..339
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   STRAND          343..345
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   HELIX           347..358
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   HELIX           410..422
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   STRAND          432..434
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   HELIX           445..457
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   HELIX           478..482
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   HELIX           483..485
FT                   /evidence="ECO:0007829|PDB:6L54"
FT   HELIX           489..508
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   HELIX           524..538
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   HELIX           544..557
FT                   /evidence="ECO:0007829|PDB:7PW8"
FT   STRAND          578..580
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          594..596
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          606..610
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          617..621
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   HELIX           626..630
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   HELIX           632..638
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   TURN            639..644
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          645..648
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          656..659
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          743..749
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          761..763
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          767..772
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   HELIX           774..776
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   TURN            779..781
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          796..801
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   HELIX           839..841
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          842..853
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          858..863
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          872..874
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   HELIX           879..883
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          887..892
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          898..901
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          904..914
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          916..923
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          927..931
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          940..942
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          944..946
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          948..955
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          958..962
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          965..967
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   HELIX           976..978
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          979..981
FT                   /evidence="ECO:0007829|PDB:7PW5"
FT   STRAND          985..990
FT                   /evidence="ECO:0007829|PDB:7PW5"
SQ   SEQUENCE   991 AA;  109684 MW;  9D8168B171179CFF CRC64;
     MAGPVSLRDL LMGASAWMGS ESPGGSPTEG GGSAAGGPEP PWREDEICVV GIFGKTALRL
     NSEKFSLVNT VCDRQVFPLF RHQDPGDPGP GIRTEAGAVG EAGGAEDPGA AAGGSVRGSG
     AVAEGNRTEA GSQDYSLLQA YYSQESKVLY LLLTSICDNS QLLRACRALQ SGEAGGGLSL
     PHAEAHEFWK HQEKLQCLSL LYLFSVCHIL LLVHPTCSFD ITYDRVFRAL DGLRQKVLPL
     LKTAIKDCPV GKDWKLNCRP CPPRLLFLFQ LNGALKVEPP RNQDPAHPDK PKKHSPKRRL
     QHALEDQIYR IFRKSRVLTN QSINCLFTVP ANQAFVYIVP GSQEEDPVGM LLDQLRSHCT
     VKDPESLLVP APLSGPRRYQ VMRQHSRQQL SFHIDSSSSS SSGQLVDFTL REFLWQHVEL
     VLSKKGFDDS VGRNPQPSHF ELPTYQKWIS AASKLYEVAI DGKEEDLGSP TGELTSKILS
     SIKVLEGFLD IDTKFSENRC QKALPMAHSA YQSNLPHNYT MTVHKNQLAQ ALRVYSQHAR
     GPAFHKYAMQ LHEDCYKFWS NGHQLCEERS LTDQHCVHKF HSLPKSGEKP EADRNPPVLY
     HNSRARSTGA CNCGRKQAPR DDPFDIKAAN YDFYQLLEEK CCGKLDHINF PVFEPSTPDP
     APAKNESSPA PPDSDADKLK EKEPQTQGES TSLSLALSLG QSTDSLGTYP ADPQAGGDNP
     EVHGQVEVKT EKRPNFVDRQ ASTVEYLPGM LHSNCPKGLL PKFSSWSLVK LGPAKSYNFH
     TGLDQQGFIP GTNYLMPWDI VIRTRAEDEG DLDTNSWPAP NKAIPGKRSA VVMGRGRRRD
     DIARAFVGFE YEDSRGRRFM CSGPDKVMKV MGSGPKESAL KALNSDMPLY ILSSSQGRGL
     KPHYAQLMRL FVVVPDAPLQ IILMPQVQPG PPPCPVFYPE KQEITLPPDG LWVLRFPYAY
     VTERGPCFPP KENVQLMSYK VLRGVLKAVT Q
 
 
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