ID   SECA_BUCAP              Reviewed;         874 AA.
AC   Q8K9U3;
DT   08-NOV-2002, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2002, sequence version 1.
DT   27-MAR-2024, entry version 133.
DE   RecName: Full=Protein translocase subunit SecA {ECO:0000255|HAMAP-Rule:MF_01382};
DE            EC=7.4.2.8 {ECO:0000255|HAMAP-Rule:MF_01382};
GN   Name=secA {ECO:0000255|HAMAP-Rule:MF_01382};
GN   OrderedLocusNames=BUsg_195;
OS   Buchnera aphidicola subsp. Schizaphis graminum (strain Sg).
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Enterobacterales;
OC   Erwiniaceae; Buchnera.
OX   NCBI_TaxID=198804;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Sg;
RX   PubMed=12089438; DOI=10.1126/science.1071278;
RA   Tamas I., Klasson L., Canbaeck B., Naeslund A.K., Eriksson A.-S.,
RA   Wernegreen J.J., Sandstroem J.P., Moran N.A., Andersson S.G.E.;
RT   "50 million years of genomic stasis in endosymbiotic bacteria.";
RL   Science 296:2376-2379(2002).
CC   -!- FUNCTION: Part of the Sec protein translocase complex. Interacts with
CC       the SecYEG preprotein conducting channel. Has a central role in
CC       coupling the hydrolysis of ATP to the transfer of proteins into and
CC       across the cell membrane, serving both as a receptor for the
CC       preprotein-SecB complex and as an ATP-driven molecular motor driving
CC       the stepwise translocation of polypeptide chains across the membrane.
CC       {ECO:0000255|HAMAP-Rule:MF_01382}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + H2O + cellular proteinSide 1 = ADP + phosphate +
CC         cellular proteinSide 2.; EC=7.4.2.8; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01382};
CC   -!- COFACTOR:
CC       Name=Zn(2+); Xref=ChEBI:CHEBI:29105; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01382};
CC       Note=May bind 1 zinc ion per subunit. {ECO:0000255|HAMAP-
CC       Rule:MF_01382};
CC   -!- SUBUNIT: Monomer and homodimer. Part of the essential Sec protein
CC       translocation apparatus which comprises SecA, SecYEG and auxiliary
CC       proteins SecDF-YajC and YidC. {ECO:0000255|HAMAP-Rule:MF_01382}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC       Rule:MF_01382}; Peripheral membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_01382}; Cytoplasmic side {ECO:0000255|HAMAP-Rule:MF_01382}.
CC       Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01382}. Note=Distribution is 50-
CC       50. {ECO:0000255|HAMAP-Rule:MF_01382}.
CC   -!- SIMILARITY: Belongs to the SecA family. {ECO:0000255|HAMAP-
CC       Rule:MF_01382}.
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DR   EMBL; AE013218; AAM67759.1; -; Genomic_DNA.
DR   RefSeq; WP_011053726.1; NC_004061.1.
DR   AlphaFoldDB; Q8K9U3; -.
DR   SMR; Q8K9U3; -.
DR   STRING; 198804.BUsg_195; -.
DR   GeneID; 75258929; -.
DR   KEGG; bas:BUsg_195; -.
DR   eggNOG; COG0653; Bacteria.
DR   HOGENOM; CLU_005314_3_0_6; -.
DR   Proteomes; UP000000416; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0008564; F:protein-exporting ATPase activity; IEA:UniProtKB-EC.
DR   GO; GO:0065002; P:intracellular protein transmembrane transport; IEA:UniProtKB-UniRule.
DR   GO; GO:0017038; P:protein import; IEA:InterPro.
DR   GO; GO:0006605; P:protein targeting; IEA:UniProtKB-UniRule.
DR   CDD; cd17928; DEXDc_SecA; 1.
DR   CDD; cd18803; SF2_C_secA; 1.
DR   Gene3D; 3.10.450.50; -; 1.
DR   Gene3D; 1.10.3060.10; Helical scaffold and wing domains of SecA; 1.
DR   Gene3D; 3.40.50.300; P-loop containing nucleotide triphosphate hydrolases; 2.
DR   Gene3D; 3.90.1440.10; SecA, preprotein cross-linking domain; 1.
DR   HAMAP; MF_01382; SecA; 1.
DR   InterPro; IPR014001; Helicase_ATP-bd.
DR   InterPro; IPR001650; Helicase_C.
DR   InterPro; IPR027417; P-loop_NTPase.
DR   InterPro; IPR004027; SEC_C_motif.
DR   InterPro; IPR000185; SecA.
DR   InterPro; IPR020937; SecA_CS.
DR   InterPro; IPR011115; SecA_DEAD.
DR   InterPro; IPR014018; SecA_motor_DEAD.
DR   InterPro; IPR011130; SecA_preprotein_X-link_dom.
DR   InterPro; IPR044722; SecA_SF2_C.
DR   InterPro; IPR011116; SecA_Wing/Scaffold.
DR   InterPro; IPR036266; SecA_Wing/Scaffold_sf.
DR   InterPro; IPR036670; SecA_X-link_sf.
DR   NCBIfam; TIGR00963; secA; 1.
DR   PANTHER; PTHR30612:SF0; CHLOROPLAST PROTEIN-TRANSPORTING ATPASE; 1.
DR   PANTHER; PTHR30612; SECA INNER MEMBRANE COMPONENT OF SEC PROTEIN SECRETION SYSTEM; 1.
DR   Pfam; PF21090; P-loop_SecA; 1.
DR   Pfam; PF02810; SEC-C; 1.
DR   Pfam; PF07517; SecA_DEAD; 1.
DR   Pfam; PF01043; SecA_PP_bind; 1.
DR   Pfam; PF07516; SecA_SW; 1.
DR   PRINTS; PR00906; SECA.
DR   SMART; SM00957; SecA_DEAD; 1.
DR   SMART; SM00958; SecA_PP_bind; 1.
DR   SUPFAM; SSF81886; Helical scaffold and wing domains of SecA; 1.
DR   SUPFAM; SSF52540; P-loop containing nucleoside triphosphate hydrolases; 2.
DR   SUPFAM; SSF81767; Pre-protein crosslinking domain of SecA; 1.
DR   PROSITE; PS01312; SECA; 1.
DR   PROSITE; PS51196; SECA_MOTOR_DEAD; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Cell inner membrane; Cell membrane; Cytoplasm; Membrane;
KW   Metal-binding; Nucleotide-binding; Protein transport; Translocase;
KW   Translocation; Transport; Zinc.
FT   CHAIN           1..874
FT                   /note="Protein translocase subunit SecA"
FT                   /id="PRO_0000109579"
FT   BINDING         87
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01382"
FT   BINDING         105..109
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01382"
FT   BINDING         512
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01382"
FT   BINDING         859
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01382"
FT   BINDING         861
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01382"
FT   BINDING         870
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01382"
FT   BINDING         871
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01382"
SQ   SEQUENCE   874 AA;  101164 MW;  BC49815F42051791 CRC64;
     MFIKFLHKIF SNRNDRILKK FKKIVSSINQ LEEKFKKLSD KKLQENTGIF RLRLKKGECL
     DDLLPESFAT VREASRRVFN MRHFDVQILG GIVLNKQCIA EMRTGEGKTL TSTLPAYLNA
     LTGRGVHIVT MNDYLAERDA KNNTPLFEFL GLTVGLNLPE MSFIDKKKAY LCDITYGTNN
     EYGFDYLRDN MIFSAEERVQ RELNYALIDE VDSILIDEAR TPLIISGPSE DSSFLYKEIN
     KLVPSLICQK KEDSDKFHGN GHFSIDEKSK QIYLTERGLV EVEKILLDRK LMKKEESLYS
     SNNIILMHHV ISALRAHNLF TRNIDYLVKD NNIIIVDEHT GRTMPGRRWS DGLHQAIEAK
     ENVTVRNENQ TLASITFQNY FRLYKKIAGM TGTAATESFE FSSIYNLDTV IIPPNKPMIR
     KDLSDLVYMT EEEKINAILK DIKNCIKKNQ PVLVGTISIE KSEMISKKLK ILNIKHNVLN
     AKFHAREAEI IAQAGKPKSV TIATNMAGRG TDIVLGGSLE SQLEKNMYLD KIETIKRNWK
     KQHDLVVLSG GLHIIGTERH ESRRIDNQLR GRSGRQGDSG SSRFYLSMED SLMRIFASDK
     IISMMRKLGL SLNEAIEHPW VTKAIENAQK KVENRNFDIR KQLLEYDDVC NEQRRVIYAQ
     RNKLIDSENI QQNIYDILKD VLHSIIKTHL NFDFPKNTRN ILDLENKLSI EFNLNISIKD
     WLKKDHDIKK ENIIKKIIDI AKKNYLNKEI QIGFHNIRMI EKSIMLKTLD SLWKEHLSAM
     DYLRQGIHLR GYAQKDPKQE YKRESFNMFS NMLELLKYEV ISFLSKLDIS YIKSNLHLNM
     NNNSSIVNND IKMGRNTPCF CKSGKKYKYC HGSL
//