ID   ATPI_OEDCA              Reviewed;         252 AA.
AC   B2X1U8;
DT   10-FEB-2009, integrated into UniProtKB/Swiss-Prot.
DT   01-JUL-2008, sequence version 1.
DT   25-MAY-2022, entry version 51.
DE   RecName: Full=ATP synthase subunit a, chloroplastic {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 IV {ECO:0000255|HAMAP-Rule:MF_01393};
GN   Name=atpI {ECO:0000255|HAMAP-Rule:MF_01393};
OS   Oedogonium cardiacum (Filamentous green alga).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Chlorophyta; core chlorophytes; Chlorophyceae;
OC   OCC clade; Oedogoniales; Oedogoniaceae; Oedogonium.
OX   NCBI_TaxID=55995;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=SAG 575-1b / CCAP 575/1B / UTEX LB 40;
RX   AGRICOLA=IND44059346; DOI=10.1111/j.1529-8817.2008.00510.x;
RA   Turmel M., Brouard J.-S., Gagnon C., Otis C., Lemieux C.;
RT   "Deep division in the Chlorophyceae (Chlorophyta) revealed by chloroplast
RT   phylogenomic analyseS.";
RL   J. Phycol. 44:739-750(2008).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SAG 575-1b / CCAP 575/1B / UTEX LB 40;
RX   PubMed=18558012; DOI=10.1186/1471-2164-9-290;
RA   Brouard J.-S., Otis C., Lemieux C., Turmel M.;
RT   "Chloroplast DNA sequence of the green alga Oedogonium cardiacum
RT   (Chlorophyceae): unique genome architecture, derived characters shared with
RT   the Chaetophorales and novel genes acquired through horizontal transfer.";
RL   BMC Genomics 9:290-290(2008).
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: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000255|HAMAP-Rule:MF_01393}; Multi-pass membrane protein
CC       {ECO:0000255|HAMAP-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; EF587323; ABU88161.1; -; Genomic_DNA.
DR   EMBL; EU677193; ACC97210.1; -; Genomic_DNA.
DR   RefSeq; YP_002000382.1; NC_011031.1.
DR   AlphaFoldDB; B2X1U8; -.
DR   SMR; B2X1U8; -.
DR   GeneID; 6440154; -.
DR   GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-UniRule.
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); Chloroplast; Hydrogen ion transport; Ion transport;
KW   Membrane; Plastid; Thylakoid; Transmembrane; Transmembrane helix;
KW   Transport.
FT   CHAIN           1..252
FT                   /note="ATP synthase subunit a, chloroplastic"
FT                   /id="PRO_0000362579"
FT   TRANSMEM        41..61
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01393"
FT   TRANSMEM        100..120
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01393"
FT   TRANSMEM        138..158
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01393"
FT   TRANSMEM        204..224
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01393"
FT   TRANSMEM        225..245
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01393"
SQ   SEQUENCE   252 AA;  28013 MW;  6D3AC93933F9CA79 CRC64;
     MIEHIFIFNN STSLSNPVFD ISEVAVGQHL YWQIGDYQLH GQVLITSWIV LGGVIIFTLL
     ANSDLKPLPV GLQNFTELVT EFIRDLAKTQ IGEEEYLKWV PFLGTIFIFV FVSNWAGALL
     PWRLIELPNG ELAAPTNDIN TTVSLALLTS VSYFYAGIRK KGLGYFKRYI QPVVFLLPLN
     VLEDFSKPLS LSFRLFGNIL ADELIVGVLV ALVPLFVPIP LMLLGVFTSA IQALVFATLA
     GAYIGESIED HH