ID   ATPI_OSTTA              Reviewed;         236 AA.
AC   Q0P3K8;
DT   20-JAN-2009, integrated into UniProtKB/Swiss-Prot.
DT   19-SEP-2006, sequence version 1.
DT   25-MAY-2022, entry version 73.
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}; OrderedLocusNames=OtCpg00440;
OS   Ostreococcus tauri.
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Chlorophyta; Mamiellophyceae; Mamiellales;
OC   Bathycoccaceae; Ostreococcus.
OX   NCBI_TaxID=70448;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=OTTH0595;
RX   PubMed=17251180; DOI=10.1093/molbev/msm012;
RA   Robbens S., Derelle E., Ferraz C., Wuyts J., Moreau H., Van de Peer Y.;
RT   "The complete chloroplast and mitochondrial DNA sequence of Ostreococcus
RT   tauri: organelle genomes of the smallest eukaryote are examples of
RT   compaction.";
RL   Mol. Biol. Evol. 24:956-968(2007).
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; CR954199; CAL36369.1; -; Genomic_DNA.
DR   RefSeq; YP_717247.1; NC_008289.1.
DR   AlphaFoldDB; Q0P3K8; -.
DR   SMR; Q0P3K8; -.
DR   STRING; 70448.Q0P3K8; -.
DR   GeneID; 4238812; -.
DR   KEGG; ota:OstapCp44; -.
DR   eggNOG; KOG4665; Eukaryota.
DR   InParanoid; Q0P3K8; -.
DR   OrthoDB; 1136313at2759; -.
DR   Proteomes; UP000009170; Chloroplast.
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; Reference proteome; Thylakoid; Transmembrane;
KW   Transmembrane helix; Transport.
FT   CHAIN           1..236
FT                   /note="ATP synthase subunit a, chloroplastic"
FT                   /id="PRO_0000361020"
FT   TRANSMEM        25..45
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01393"
FT   TRANSMEM        87..107
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01393"
FT   TRANSMEM        123..143
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01393"
FT   TRANSMEM        180..202
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01393"
FT   TRANSMEM        210..230
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01393"
SQ   SEQUENCE   236 AA;  26044 MW;  F90D3D6DAD6289A8 CRC64;
     MNFLYDISAV EIGQHFYWSL GGFQMHGQVL INSWIVLGLI IAFAVTTTRD LKPVPEGGQN
     LAEFVVEYIR DIAKTQVGHD YLEWTPFIGT LFLFIFVSNW SGALIPWKLI ELPHGELGAP
     TNDINTTVAL ALLTSLTYFY AGLKKKGLEY FGKYVQPTPI LLPINVLEDF TKPLSLSFRL
     FGNILADELV VAVLVSLVPL VIPIPLIFLG LFTSGIQALI FATLAGAYIG EALEGH