ID   ATP6_PSEPU              Reviewed;         153 AA.
AC   P25761;
DT   01-MAY-1992, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-1992, sequence version 1.
DT   03-AUG-2022, entry version 98.
DE   RecName: Full=ATP synthase subunit a;
DE   AltName: Full=ATP synthase F0 sector subunit a;
DE   AltName: Full=F-ATPase subunit 6;
DE   Flags: Fragment;
GN   Name=atpB; Synonyms=uncB;
OS   Pseudomonas putida (Arthrobacter siderocapsulatus).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Pseudomonadales;
OC   Pseudomonadaceae; Pseudomonas.
OX   NCBI_TaxID=303;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=TN2100;
RX   PubMed=1552862; DOI=10.1111/j.1365-2958.1992.tb01510.x;
RA   Ogasawara N., Yoshikawa H.;
RT   "Genes and their organization in the replication origin region of the
RT   bacterial chromosome.";
RL   Mol. Microbiol. 6:629-634(1992).
CC   -!- FUNCTION: Key component of the proton channel; it plays a direct role
CC       in the translocation of protons across the membrane. {ECO:0000250}.
CC   -!- SUBUNIT: F-type ATPases have 2 components, CF(1) - the catalytic core
CC       - and CF(0) - the membrane proton channel. CF(1) has five subunits:
CC       alpha(3), beta(3), gamma(1), delta(1), epsilon(1). CF(0) has three main
CC       subunits: a(1), b(2) and c(9-12). The alpha and beta chains form an
CC       alternating ring which encloses part of the gamma chain. CF(1) is
CC       attached to CF(0) by a central stalk formed by the gamma and epsilon
CC       chains, while a peripheral stalk is formed by the delta and b chains
CC       (By similarity). {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000250}; Multi-pass
CC       membrane protein {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the ATPase A chain family. {ECO:0000305}.
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DR   EMBL; X62540; CAA44424.1; -; Genomic_DNA.
DR   PIR; JQ1226; JQ1226.
DR   AlphaFoldDB; P25761; -.
DR   SMR; P25761; -.
DR   STRING; 1240350.AMZE01000066_gene3185; -.
DR   eggNOG; COG0356; Bacteria.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0045263; C:proton-transporting ATP synthase complex, coupling factor F(o); IEA:UniProtKB-KW.
DR   GO; GO:0015078; F:proton transmembrane transporter activity; IEA:InterPro.
DR   GO; GO:0015986; P:proton motive force-driven ATP synthesis; IEA:InterPro.
DR   InterPro; IPR045082; ATP_syn_F0_a_bact/chloroplast.
DR   InterPro; IPR000568; ATP_synth_F0_asu.
DR   InterPro; IPR035908; F0_ATP_A_sf.
DR   PANTHER; PTHR42823; PTHR42823; 1.
DR   Pfam; PF00119; ATP-synt_A; 1.
DR   SUPFAM; SSF81336; SSF81336; 1.
PE   3: Inferred from homology;
KW   ATP synthesis; Cell inner membrane; Cell membrane; CF(0);
KW   Hydrogen ion transport; Ion transport; Membrane; Transmembrane;
KW   Transmembrane helix; Transport.
FT   CHAIN           1..>153
FT                   /note="ATP synthase subunit a"
FT                   /id="PRO_0000082066"
FT   TRANSMEM        43..63
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        104..124
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   NON_TER         153
SQ   SEQUENCE   153 AA;  16607 MW;  7CBCF4E7CB4E47B1 CRC64;
     MAAETASGYI QHHLQNLTYG QLPDGSWGFA HSAAEAKAMG FWAFHLDTLG WSVALGLIFL
     LIFRMAAKKA TSGQPGGLQN FVEVMVDFVN GSVKDSFHGR SPVIAPLALT IFVWVFLMNA
     VDLIPVDWIP QLAILISGDP HIPFRAVSTT DPN