ID   ATP6_SYNS3              Reviewed;         241 AA.
AC   Q0I7Q7;
DT   10-FEB-2009, integrated into UniProtKB/Swiss-Prot.
DT   03-OCT-2006, sequence version 1.
DT   25-MAY-2022, entry version 98.
DE   RecName: Full=ATP synthase subunit a {ECO:0000255|HAMAP-Rule:MF_01393};
DE   AltName: Full=ATP synthase F0 sector subunit a {ECO:0000255|HAMAP-Rule:MF_01393};
DE   AltName: Full=F-ATPase subunit 6 {ECO:0000255|HAMAP-Rule:MF_01393};
GN   Name=atpB {ECO:0000255|HAMAP-Rule:MF_01393};
GN   Synonyms=atpI {ECO:0000255|HAMAP-Rule:MF_01393};
GN   OrderedLocusNames=sync_2318;
OS   Synechococcus sp. (strain CC9311).
OC   Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus;
OC   unclassified Synechococcus.
OX   NCBI_TaxID=64471;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CC9311;
RX   PubMed=16938853; DOI=10.1073/pnas.0602963103;
RA   Palenik B., Ren Q., Dupont C.L., Myers G.S., Heidelberg J.F., Badger J.H.,
RA   Madupu R., Nelson W.C., Brinkac L.M., Dodson R.J., Durkin A.S.,
RA   Daugherty S.C., Sullivan S.A., Khouri H., Mohamoud Y., Halpin R.,
RA   Paulsen I.T.;
RT   "Genome sequence of Synechococcus CC9311: insights into adaptation to a
RT   coastal environment.";
RL   Proc. Natl. Acad. Sci. U.S.A. 103:13555-13559(2006).
CC   -!- FUNCTION: Key component of the proton channel; it plays a direct role
CC       in the translocation of protons across the membrane.
CC       {ECO:0000255|HAMAP-Rule:MF_01393}.
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 four main
CC       subunits: a, b, b' and c. {ECO:0000255|HAMAP-Rule:MF_01393}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000255|HAMAP-
CC       Rule:MF_01393}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_01393}.
CC   -!- SIMILARITY: Belongs to the ATPase A chain family. {ECO:0000255|HAMAP-
CC       Rule:MF_01393}.
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DR   EMBL; CP000435; ABI46814.1; -; Genomic_DNA.
DR   RefSeq; WP_011620226.1; NC_008319.1.
DR   AlphaFoldDB; Q0I7Q7; -.
DR   SMR; Q0I7Q7; -.
DR   STRING; 64471.sync_2318; -.
DR   EnsemblBacteria; ABI46814; ABI46814; sync_2318.
DR   KEGG; syg:sync_2318; -.
DR   eggNOG; COG0356; Bacteria.
DR   HOGENOM; CLU_041018_2_4_3; -.
DR   OMA; FTHAVRL; -.
DR   OrthoDB; 867266at2; -.
DR   Proteomes; UP000001961; Chromosome.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0031676; C:plasma membrane-derived thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0045263; C:proton-transporting ATP synthase complex, coupling factor F(o); IEA:UniProtKB-KW.
DR   GO; GO:0046933; F:proton-transporting ATP synthase activity, rotational mechanism; IEA:UniProtKB-UniRule.
DR   Gene3D; 1.20.120.220; -; 1.
DR   HAMAP; MF_01393; ATP_synth_a_bact; 1.
DR   InterPro; IPR045082; ATP_syn_F0_a_bact/chloroplast.
DR   InterPro; IPR000568; ATP_synth_F0_asu.
DR   InterPro; IPR023011; ATP_synth_F0_asu_AS.
DR   InterPro; IPR035908; F0_ATP_A_sf.
DR   PANTHER; PTHR42823; PTHR42823; 1.
DR   Pfam; PF00119; ATP-synt_A; 1.
DR   PRINTS; PR00123; ATPASEA.
DR   SUPFAM; SSF81336; SSF81336; 1.
DR   TIGRFAMs; TIGR01131; ATP_synt_6_or_A; 1.
DR   PROSITE; PS00449; ATPASE_A; 1.
PE   3: Inferred from homology;
KW   ATP synthesis; CF(0); Hydrogen ion transport; Ion transport; Membrane;
KW   Reference proteome; Thylakoid; Transmembrane; Transmembrane helix;
KW   Transport.
FT   CHAIN           1..241
FT                   /note="ATP synthase subunit a"
FT                   /id="PRO_0000362485"
FT   TRANSMEM        30..50
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01393"
FT   TRANSMEM        89..109
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01393"
FT   TRANSMEM        128..148
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01393"
FT   TRANSMEM        193..213
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01393"
FT   TRANSMEM        214..234
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01393"
SQ   SEQUENCE   241 AA;  27070 MW;  958617C90824C876 CRC64;
     MALLPFTLPL AELEVGHHLY WQIGNLNLHG QIFLSSWILI GALLAFVLVG TKNLSRDPKG
     AQNLLEFLWD YIRDLSRDQI GEKYYREWLP FIGTLFLFIF VSNWGGALIP WKVIELPEGE
     LGAPTADINT TVAMALLVTL AYFYAGLSKK GWRFFELYVE PTPIMLPFKI IEEFTKPLSL
     SFRLFGNILA DELAVGVLVY LVPLIVPLPV MLLGLFTSAI QALIFATLAA FYIGEGLHEA
     H