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SECY_ECOLI
ID   SECY_ECOLI              Reviewed;         443 AA.
AC   P0AGA2; P03844; Q2M6W5;
DT   21-JUL-1986, integrated into UniProtKB/Swiss-Prot.
DT   21-JUL-1986, sequence version 1.
DT   03-AUG-2022, entry version 126.
DE   RecName: Full=Protein translocase subunit SecY;
GN   Name=secY; Synonyms=prlA; OrderedLocusNames=b3300, JW3262;
OS   Escherichia coli (strain K12).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=83333;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=K12;
RX   PubMed=6222285; DOI=10.1093/nar/11.9.2599;
RA   Cerretti D.P., Dean D., Davis G.R., Bedwell D.M., Nomura M.;
RT   "The spc ribosomal protein operon of Escherichia coli: sequence and
RT   cotranscription of the ribosomal protein genes and a protein export gene.";
RL   Nucleic Acids Res. 11:2599-2616(1983).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=K12 / MG1655 / ATCC 47076;
RX   PubMed=9278503; DOI=10.1126/science.277.5331.1453;
RA   Blattner F.R., Plunkett G. III, Bloch C.A., Perna N.T., Burland V.,
RA   Riley M., Collado-Vides J., Glasner J.D., Rode C.K., Mayhew G.F.,
RA   Gregor J., Davis N.W., Kirkpatrick H.A., Goeden M.A., Rose D.J., Mau B.,
RA   Shao Y.;
RT   "The complete genome sequence of Escherichia coli K-12.";
RL   Science 277:1453-1462(1997).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=K12 / W3110 / ATCC 27325 / DSM 5911;
RX   PubMed=16738553; DOI=10.1038/msb4100049;
RA   Hayashi K., Morooka N., Yamamoto Y., Fujita K., Isono K., Choi S.,
RA   Ohtsubo E., Baba T., Wanner B.L., Mori H., Horiuchi T.;
RT   "Highly accurate genome sequences of Escherichia coli K-12 strains MG1655
RT   and W3110.";
RL   Mol. Syst. Biol. 2:E1-E5(2006).
RN   [4]
RP   TOPOLOGY.
RX   PubMed=2828030; DOI=10.1002/j.1460-2075.1987.tb02670.x;
RA   Akiyama Y., Ito K.;
RT   "Topology analysis of the SecY protein, an integral membrane protein
RT   involved in protein export in Escherichia coli.";
RL   EMBO J. 6:3465-3470(1987).
RN   [5]
RP   MUTANT SECY100.
RX   PubMed=2646297; DOI=10.1128/jb.171.3.1742-1743.1989;
RA   Ito K., Hirota Y., Akiyama Y.;
RT   "Temperature-sensitive sec mutants of Escherichia coli: inhibition of
RT   protein export at the permissive temperature.";
RL   J. Bacteriol. 171:1742-1743(1989).
RN   [6]
RP   REQUIRED FOR ITS OWN INSERTION INTO MEMBRANES.
RC   STRAIN=K12 / MC4100;
RX   PubMed=2535843; DOI=10.1016/s0021-9258(17)31277-2;
RA   Akiyama Y., Ito K.;
RT   "Export of Escherichia coli alkaline phosphatase attached to an integral
RT   membrane protein, SecY.";
RL   J. Biol. Chem. 264:437-442(1989).
RN   [7]
RP   MUTANTS SECY39 AND SECY40.
RX   PubMed=2254269; DOI=10.1128/jb.172.12.7005-7010.1990;
RA   Baba T., Jacq A., Brickman E., Beckwith J., Taura T., Ueguchi C.,
RA   Akiyama Y., Ito K.;
RT   "Characterization of cold-sensitive secY mutants of Escherichia coli.";
RL   J. Bacteriol. 172:7005-7010(1990).
RN   [8]
RP   MUTANTS SECY121 AND SECY161.
RX   PubMed=2007553; DOI=10.1128/jb.173.7.2289-2296.1991;
RA   Sako T.;
RT   "Novel prlA alleles defective in supporting staphylokinase processing in
RT   Escherichia coli.";
RL   J. Bacteriol. 173:2289-2296(1991).
RN   [9]
RP   CHARACTERIZATION.
RX   PubMed=1633829; DOI=10.1111/j.1432-1033.1992.tb17111.x;
RA   Swidersky U.E., Rienhoefer-Schweer A., Werner P.K., Ernst F., Benson S.A.,
RA   Hoffschulte H.K., Mueller M.;
RT   "Biochemical analysis of the biogenesis and function of the Escherichia
RT   coli export factor SecY.";
RL   Eur. J. Biochem. 207:803-811(1992).
RN   [10]
RP   MUTANTS.
RX   PubMed=8253067; DOI=10.1002/j.1460-2075.1993.tb06013.x;
RA   Osborne R.S., Silhavy T.J.;
RT   "PrlA suppressor mutations cluster in regions corresponding to three
RT   distinct topological domains.";
RL   EMBO J. 12:3391-3398(1993).
RN   [11]
RP   MUTAGENESIS OF GLY-240.
RC   STRAIN=K12 / MC4100;
RX   PubMed=8183945; DOI=10.1073/pnas.91.10.4539;
RA   Baba T., Taura T., Shimoike T., Akiyama Y., Yoshihisa T., Ito K.;
RT   "A cytoplasmic domain is important for the formation of a SecY-SecE
RT   translocator complex.";
RL   Proc. Natl. Acad. Sci. U.S.A. 91:4539-4543(1994).
RN   [12]
RP   MUTANTS.
RX   PubMed=7889938; DOI=10.1002/j.1460-2075.1995.tb07070.x;
RA   Flower A.M., Osborne R.S., Silhavy T.J.;
RT   "The allele-specific synthetic lethality of prlA-prlG double mutants
RT   predicts interactive domains of SecY and SecE.";
RL   EMBO J. 14:884-893(1995).
RN   [13]
RP   DEGRADATION BY FTSH.
RX   PubMed=7753838; DOI=10.1073/pnas.92.10.4532;
RA   Kihara A., Akiyama Y., Ito K.;
RT   "FtsH is required for proteolytic elimination of uncomplexed forms of SecY,
RT   an essential protein translocase subunit.";
RL   Proc. Natl. Acad. Sci. U.S.A. 92:4532-4536(1995).
RN   [14]
RP   INTERACTION WITH FTSQ BEFORE YIDC.
RX   PubMed=11415986; DOI=10.1093/embo-reports/kve108;
RA   Urbanus M.L., Scotti P.A., Froderberg L., Saaf A., de Gier J.W.,
RA   Brunner J., Samuelson J.C., Dalbey R.E., Oudega B., Luirink J.;
RT   "Sec-dependent membrane protein insertion: sequential interaction of
RT   nascent FtsQ with SecY and YidC.";
RL   EMBO Rep. 2:524-529(2001).
RN   [15]
RP   TOPOLOGY [LARGE SCALE ANALYSIS].
RC   STRAIN=K12 / MG1655 / ATCC 47076;
RX   PubMed=15919996; DOI=10.1126/science.1109730;
RA   Daley D.O., Rapp M., Granseth E., Melen K., Drew D., von Heijne G.;
RT   "Global topology analysis of the Escherichia coli inner membrane
RT   proteome.";
RL   Science 308:1321-1323(2005).
RN   [16]
RP   INTERACTION WITH SECA, AND CHARACTERIZATION OF THE TRANSLOCATING PORE.
RX   PubMed=17418789; DOI=10.1016/j.cell.2007.02.036;
RA   Osborne A.R., Rapoport T.A.;
RT   "Protein translocation is mediated by oligomers of the SecY complex with
RT   one SecY copy forming the channel.";
RL   Cell 129:97-110(2007).
RN   [17]
RP   COMPLEX DEGRADATION.
RC   STRAIN=K12 / MC4100;
RX   PubMed=19661432; DOI=10.1126/science.1172221;
RA   van Stelten J., Silva F., Belin D., Silhavy T.J.;
RT   "Effects of antibiotics and a proto-oncogene homolog on destruction of
RT   protein translocator SecY.";
RL   Science 325:753-756(2009).
RN   [18]
RP   CHARACTERIZATION OF CHANNEL OPENING, AND MUTAGENESIS OF 60-ILE--ARG-74;
RP   65-ASN--GLY-70; PHE-67 AND ILE-408.
RX   PubMed=17531809; DOI=10.1016/j.molcel.2007.03.022;
RA   Saparov S.M., Erlandson K., Cannon K., Schaletzky J., Schulman S.,
RA   Rapoport T.A., Pohl P.;
RT   "Determining the conductance of the SecY protein translocation channel for
RT   small molecules.";
RL   Mol. Cell 26:501-509(2007).
RN   [19]
RP   MUTAGENESIS OF 60-ILE--ARG-74 AND 65-ASN--GLY-70.
RX   PubMed=17531810; DOI=10.1016/j.molcel.2007.05.002;
RA   Li W., Schulman S., Boyd D., Erlandson K., Beckwith J., Rapoport T.A.;
RT   "The plug domain of the SecY protein stabilizes the closed state of the
RT   translocation channel and maintains a membrane seal.";
RL   Mol. Cell 26:511-521(2007).
RN   [20]
RP   MUTAGENESIS OF 424-MET--ARG-443.
RC   STRAIN=ATCC 43587 / DSM 3638 / JCM 8422 / Vc1;
RX   PubMed=20855604; DOI=10.1073/pnas.1012556107;
RA   Egea P.F., Stroud R.M.;
RT   "Lateral opening of a translocon upon entry of protein suggests the
RT   mechanism of insertion into membranes.";
RL   Proc. Natl. Acad. Sci. U.S.A. 107:17182-17187(2010).
RN   [21]
RP   FUNCTION, SUBUNIT, AND SUBCELLULAR LOCATION.
RC   STRAIN=BL21-DE3;
RX   PubMed=27435098; DOI=10.1042/bcj20160545;
RA   Komar J., Alvira S., Schulze R.J., Martin R., Lycklama a Nijeholt J.A.,
RA   Lee S.C., Dafforn T.R., Deckers-Hebestreit G., Berger I., Schaffitzel C.,
RA   Collinson I.;
RT   "Membrane protein insertion and assembly by the bacterial holo-translocon
RT   SecYEG-SecDF-YajC-YidC.";
RL   Biochem. J. 473:3341-3354(2016).
RN   [22]
RP   STRUCTURE BY ELECTRON MICROSCOPY (14.9 ANGSTROMS) OF 1-436 IN COMPLEX WITH
RP   THE RIBOSOME AND A NASCENT POLYPEPTIDE CHAIN.
RC   STRAIN=MRE-600;
RX   PubMed=16292303; DOI=10.1038/nature04133;
RA   Mitra K., Schaffitzel C., Shaikh T., Tama F., Jenni S., Brooks C.L. III,
RA   Ban N., Frank J.;
RT   "Structure of the E. coli protein-conducting channel bound to a translating
RT   ribosome.";
RL   Nature 438:318-324(2005).
RN   [23]
RP   STRUCTURE BY CRYOELECTRON MICROSCOPY IN COMPLEX WITH THE RIBOSOME AND A
RP   NASCENT POLYPEPTIDE CHAIN.
RX   PubMed=21499241; DOI=10.1038/nsmb.2026;
RA   Frauenfeld J., Gumbart J., Sluis E.O., Funes S., Gartmann M., Beatrix B.,
RA   Mielke T., Berninghausen O., Becker T., Schulten K., Beckmann R.;
RT   "Cryo-EM structure of the ribosome-SecYE complex in the membrane
RT   environment.";
RL   Nat. Struct. Mol. Biol. 18:614-621(2011).
RN   [24]
RP   REVIEW.
RX   PubMed=2202723; DOI=10.1007/bf00763172;
RA   Ito K.;
RT   "Structure, function, and biogenesis of SecY, an integral membrane protein
RT   involved in protein export.";
RL   J. Bioenerg. Biomembr. 22:353-367(1990).
RN   [25]
RP   REVIEW.
RX   PubMed=18078384; DOI=10.1146/annurev.biochem.77.061606.160747;
RA   Driessen A.J., Nouwen N.;
RT   "Protein translocation across the bacterial cytoplasmic membrane.";
RL   Annu. Rev. Biochem. 77:643-667(2008).
CC   -!- FUNCTION: The central subunit of the protein translocation channel
CC       SecYEG. Consists of two halves formed by TMs 1-5 and 6-10. These two
CC       domains form a lateral gate at the front which open onto the bilayer
CC       between TMs 2 and 7, and are clamped together by SecE at the back. The
CC       channel is closed by both a pore ring composed of hydrophobic SecY
CC       resides and a short helix (helix 2A) on the extracellular side of the
CC       membrane which forms a plug. The plug probably moves laterally to allow
CC       the channel to open. The ring and the pore may move independently. SecY
CC       is required to insert newly synthesized SecY into the inner membrane.
CC       Overexpression of some hybrid proteins has been thought to jam the
CC       protein secretion apparatus resulting in cell death; while this may be
CC       true, overexpression also results in FtsH-mediated degradation of SecY.
CC   -!- SUBUNIT: Component of the Sec protein translocase complex. Heterotrimer
CC       consisting of SecY, SecE and SecG subunits. The heterotrimers can form
CC       oligomers, although 1 heterotrimer is thought to be able to translocate
CC       proteins. Interacts with the ribosome. Interacts with SecDF-YajC and
CC       YidC; YidC interacts with nascent inner membrane proteins after SecY.
CC       The SecDF-YidC-YajC translocase forms a supercomplex with SecYEG,
CC       called the holo-translocon (HTL) (PubMed:27435098). The stoichiometry
CC       of the super complex may be SecYEG:YidC:SecDF 4:3:1, YajC is in the
CC       reconstituted complex (with SecDF) but as no antibody is available it
CC       could not be quantified (PubMed:27435098). SecY probably contacts the
CC       23S rRNA and possibly also ribosomal protein L23 during ribosome
CC       docking. A single SecY molecule forms the translocating pore, although
CC       interaction with SecA may require oligomers.
CC       {ECO:0000269|PubMed:11415986, ECO:0000269|PubMed:17418789,
CC       ECO:0000269|PubMed:27435098}.
CC   -!- INTERACTION:
CC       P0AGA2; P0A910: ompA; NbExp=2; IntAct=EBI-761422, EBI-371347;
CC       P0AGA2; P10408: secA; NbExp=6; IntAct=EBI-761422, EBI-543213;
CC       P0AGA2; P0AG96: secE; NbExp=5; IntAct=EBI-761422, EBI-6404267;
CC       P0AGA2; P0AG99: secG; NbExp=3; IntAct=EBI-761422, EBI-6404248;
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane; Multi-pass membrane protein.
CC   -!- PTM: SecY that is not part of the protein translocation apparatus is
CC       degraded by FtsH. Also degraded by FtsH when the SecYEG complex is
CC       jammed, or upon treatment with antibiotics that block translation
CC       elongation such as chloramphenicol.
CC   -!- SIMILARITY: Belongs to the SecY/SEC61-alpha family. {ECO:0000305}.
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DR   EMBL; X01563; CAA25725.1; -; Genomic_DNA.
DR   EMBL; U18997; AAA58097.1; -; Genomic_DNA.
DR   EMBL; U00096; AAC76325.1; -; Genomic_DNA.
DR   EMBL; AP009048; BAE77991.1; -; Genomic_DNA.
DR   PIR; A04473; QQECSY.
DR   RefSeq; NP_417759.1; NC_000913.3.
DR   RefSeq; WP_001118861.1; NZ_STEB01000038.1.
DR   PDB; 2AKH; EM; 14.90 A; B/Y=1-436.
DR   PDB; 2AKI; EM; 14.90 A; B/Y=1-436.
DR   PDB; 3J45; EM; 9.50 A; y=6-440.
DR   PDB; 3J46; EM; 10.10 A; y=6-440.
DR   PDB; 4V6M; EM; -; A=8-442.
DR   PDB; 5ABB; EM; 8.00 A; A=1-443.
DR   PDB; 5GAE; EM; 3.33 A; g=1-443.
DR   PDB; 5MG3; EM; 14.00 A; Y=1-443.
DR   PDB; 5NCO; EM; 4.80 A; g=14-429.
DR   PDB; 6R7L; EM; 6.00 A; Y=1-443.
DR   PDBsum; 2AKH; -.
DR   PDBsum; 2AKI; -.
DR   PDBsum; 3J45; -.
DR   PDBsum; 3J46; -.
DR   PDBsum; 4V6M; -.
DR   PDBsum; 5ABB; -.
DR   PDBsum; 5GAE; -.
DR   PDBsum; 5MG3; -.
DR   PDBsum; 5NCO; -.
DR   PDBsum; 6R7L; -.
DR   AlphaFoldDB; P0AGA2; -.
DR   SMR; P0AGA2; -.
DR   BioGRID; 4263404; 365.
DR   ComplexPortal; CPX-1095; Holo-translocon SecYEG-SecDF-YajC-YidC complex.
DR   ComplexPortal; CPX-1096; Protein-conducting channel SecYEG complex.
DR   DIP; DIP-59302N; -.
DR   IntAct; P0AGA2; 5.
DR   STRING; 511145.b3300; -.
DR   TCDB; 3.A.5.1.1; the general secretory pathway (sec) family.
DR   jPOST; P0AGA2; -.
DR   PaxDb; P0AGA2; -.
DR   PRIDE; P0AGA2; -.
DR   EnsemblBacteria; AAC76325; AAC76325; b3300.
DR   EnsemblBacteria; BAE77991; BAE77991; BAE77991.
DR   GeneID; 67415341; -.
DR   GeneID; 947799; -.
DR   KEGG; ecj:JW3262; -.
DR   KEGG; eco:b3300; -.
DR   PATRIC; fig|1411691.4.peg.3431; -.
DR   EchoBASE; EB0759; -.
DR   eggNOG; COG0201; Bacteria.
DR   HOGENOM; CLU_030313_0_2_6; -.
DR   InParanoid; P0AGA2; -.
DR   OMA; FAMWLGE; -.
DR   PhylomeDB; P0AGA2; -.
DR   BioCyc; EcoCyc:SECY; -.
DR   BioCyc; MetaCyc:SECY; -.
DR   EvolutionaryTrace; P0AGA2; -.
DR   PRO; PR:P0AGA2; -.
DR   Proteomes; UP000000318; Chromosome.
DR   Proteomes; UP000000625; Chromosome.
DR   GO; GO:0031522; C:cell envelope Sec protein transport complex; IDA:EcoCyc.
DR   GO; GO:0016021; C:integral component of membrane; IDA:EcoliWiki.
DR   GO; GO:0005887; C:integral component of plasma membrane; IDA:CACAO.
DR   GO; GO:0016020; C:membrane; IDA:ComplexPortal.
DR   GO; GO:0005886; C:plasma membrane; IDA:EcoCyc.
DR   GO; GO:0008320; F:protein transmembrane transporter activity; IDA:EcoCyc.
DR   GO; GO:0005048; F:signal sequence binding; IDA:EcoCyc.
DR   GO; GO:0065002; P:intracellular protein transmembrane transport; IDA:EcoCyc.
DR   GO; GO:0006886; P:intracellular protein transport; IMP:EcoliWiki.
DR   GO; GO:0032978; P:protein insertion into membrane from inner side; IDA:EcoCyc.
DR   GO; GO:0043952; P:protein transport by the Sec complex; IDA:ComplexPortal.
DR   GO; GO:0006616; P:SRP-dependent cotranslational protein targeting to membrane, translocation; IDA:EcoCyc.
DR   Gene3D; 1.10.3370.10; -; 1.
DR   HAMAP; MF_01465; SecY; 1.
DR   InterPro; IPR026593; SecY.
DR   InterPro; IPR002208; SecY/SEC61-alpha.
DR   InterPro; IPR030659; SecY_CS.
DR   InterPro; IPR023201; SecY_dom_sf.
DR   PANTHER; PTHR10906; PTHR10906; 1.
DR   Pfam; PF00344; SecY; 1.
DR   PIRSF; PIRSF004557; SecY; 1.
DR   SUPFAM; SSF103491; SSF103491; 1.
DR   TIGRFAMs; TIGR00967; 3a0501s007; 1.
DR   PROSITE; PS00755; SECY_1; 1.
DR   PROSITE; PS00756; SECY_2; 1.
PE   1: Evidence at protein level;
KW   3D-structure; Cell inner membrane; Cell membrane; Membrane;
KW   Protein transport; Reference proteome; Translocation; Transmembrane;
KW   Transmembrane helix; Transport.
FT   CHAIN           1..443
FT                   /note="Protein translocase subunit SecY"
FT                   /id="PRO_0000131721"
FT   TOPO_DOM        1..22
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        23..35
FT                   /note="Helical; Name=1"
FT                   /evidence="ECO:0000305"
FT   TOPO_DOM        36..60
FT                   /note="Periplasmic"
FT                   /evidence="ECO:0000250"
FT   TRANSMEM        61..96
FT                   /note="Discontinuously helical; Name=2"
FT                   /evidence="ECO:0000250"
FT   INTRAMEM        61..70
FT                   /note="Helical; Name=Helix 2A"
FT                   /evidence="ECO:0000305"
FT   INTRAMEM        71..76
FT                   /evidence="ECO:0000305"
FT   INTRAMEM        77..96
FT                   /note="Helical; Name=Helix 2B"
FT                   /evidence="ECO:0000305"
FT   TOPO_DOM        97..115
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        116..131
FT                   /note="Helical; Name=3"
FT                   /evidence="ECO:0000305"
FT   TOPO_DOM        132..164
FT                   /note="Periplasmic"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        165..178
FT                   /note="Helical; Name=4"
FT                   /evidence="ECO:0000305"
FT   TOPO_DOM        179..183
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        184..200
FT                   /note="Helical; Name=5"
FT                   /evidence="ECO:0000305"
FT   TOPO_DOM        201..223
FT                   /note="Periplasmic"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        224..237
FT                   /note="Helical; Name=6"
FT                   /evidence="ECO:0000305"
FT   TOPO_DOM        238..273
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        274..287
FT                   /note="Helical; Name=7"
FT                   /evidence="ECO:0000305"
FT   TOPO_DOM        288..313
FT                   /note="Periplasmic"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        314..329
FT                   /note="Helical; Name=8"
FT                   /evidence="ECO:0000305"
FT   TOPO_DOM        330..380
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        381..395
FT                   /note="Helical; Name=9"
FT                   /evidence="ECO:0000305"
FT   TOPO_DOM        396
FT                   /note="Periplasmic"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        397..413
FT                   /note="Helical; Name=10"
FT                   /evidence="ECO:0000305"
FT   TOPO_DOM        414..443
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000305"
FT   MUTAGEN         40
FT                   /note="P->S: In secY100; temperature-sensitive."
FT   MUTAGEN         60..74
FT                   /note="Missing: Some loss of viability, supports protein
FT                   translocation; strongly suppresses defective and missing
FT                   signal sequences; transient transmembrane channels open."
FT                   /evidence="ECO:0000269|PubMed:17531809,
FT                   ECO:0000269|PubMed:17531810"
FT   MUTAGEN         65..70
FT                   /note="Missing: Grows almost as well as wild-type, supports
FT                   protein translocation; strongly suppresses defective and
FT                   missing signal sequences; transient transmembrane channels
FT                   open."
FT                   /evidence="ECO:0000269|PubMed:17531809,
FT                   ECO:0000269|PubMed:17531810"
FT   MUTAGEN         67
FT                   /note="F->C: In prlA3; altered signal sequence interaction,
FT                   transient channel opening and closing in presence of
FT                   oxidant; massive ion flux when cross-linked to SecE C-120
FT                   mutation."
FT                   /evidence="ECO:0000269|PubMed:17531809"
FT   MUTAGEN         167
FT                   /note="G->E: In secY100; temperature-sensitive."
FT   MUTAGEN         240
FT                   /note="G->D: In secY24; temperature-sensitive at 42 degrees
FT                   Celsius, impairs interaction with SecE even at 30 degrees
FT                   in vitro."
FT                   /evidence="ECO:0000269|PubMed:8183945"
FT   MUTAGEN         282
FT                   /note="S->R: In prlA401; altered signal sequence
FT                   interaction, transient transmembrane channels open."
FT   MUTAGEN         286
FT                   /note="F->Y: In prlA4-1; altered signal sequence
FT                   interaction."
FT   MUTAGEN         287
FT                   /note="P->L: In secY161; altered signal sequence
FT                   interaction."
FT   MUTAGEN         290
FT                   /note="I->T: In secY121; altered signal sequence
FT                   interaction."
FT   MUTAGEN         357
FT                   /note="R->H: In secY39; cold-sensitive."
FT   MUTAGEN         363
FT                   /note="A->S: In secY40; cold-sensitive."
FT   MUTAGEN         408
FT                   /note="I->N: In prlA4-2; altered signal sequence
FT                   interaction."
FT                   /evidence="ECO:0000269|PubMed:17531809"
FT   MUTAGEN         424..443
FT                   /note="Missing: No longer complements secY24, a
FT                   temperature-sensitive secY mutation."
FT                   /evidence="ECO:0000269|PubMed:20855604"
FT   HELIX           17..36
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   STRAND          41..44
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   HELIX           46..52
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   HELIX           59..65
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   TURN            66..69
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   TURN            71..75
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   HELIX           83..98
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   HELIX           100..106
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   HELIX           110..138
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   HELIX           155..176
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   TURN            178..181
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   STRAND          182..184
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   HELIX           186..196
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   HELIX           200..208
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   TURN            209..213
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   HELIX           217..239
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   STRAND          242..251
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   STRAND          258..267
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   STRAND          269..272
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   HELIX           274..290
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   TURN            291..294
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   HELIX           301..309
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   HELIX           315..336
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   HELIX           339..348
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   HELIX           360..394
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   STRAND          401..403
FT                   /evidence="ECO:0007829|PDB:5GAE"
FT   HELIX           404..426
FT                   /evidence="ECO:0007829|PDB:5GAE"
SQ   SEQUENCE   443 AA;  48512 MW;  711CA63CD8809763 CRC64;
     MAKQPGLDFQ SAKGGLGELK RRLLFVIGAL IVFRIGSFIP IPGIDAAVLA KLLEQQRGTI
     IEMFNMFSGG ALSRASIFAL GIMPYISASI IIQLLTVVHP TLAEIKKEGE SGRRKISQYT
     RYGTLVLAIF QSIGIATGLP NMPGMQGLVI NPGFAFYFTA VVSLVTGTMF LMWLGEQITE
     RGIGNGISII IFAGIVAGLP PAIAHTIEQA RQGDLHFLVL LLVAVLVFAV TFFVVFVERG
     QRRIVVNYAK RQQGRRVYAA QSTHLPLKVN MAGVIPAIFA SSIILFPATI ASWFGGGTGW
     NWLTTISLYL QPGQPLYVLL YASAIIFFCF FYTALVFNPR ETADNLKKSG AFVPGIRPGE
     QTAKYIDKVM TRLTLVGALY ITFICLIPEF MRDAMKVPFY FGGTSLLIVV VVIMDFMAQV
     QTLMMSSQYE SALKKANLKG YGR
 
 
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