ID   ATP6_PISOC              Reviewed;         228 AA.
AC   P25005;
DT   01-MAR-1992, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-1992, sequence version 1.
DT   03-AUG-2022, entry version 96.
DE   RecName: Full=ATP synthase subunit a;
DE   AltName: Full=F-ATPase protein 6;
GN   Name=ATP6;
OS   Pisaster ochraceus (Ochre sea star) (Asterias ochracea).
OG   Mitochondrion.
OC   Eukaryota; Metazoa; Echinodermata; Eleutherozoa; Asterozoa; Asteroidea;
OC   Forcipulatacea; Forcipulatida; Asteriidae; Pisaster.
OX   NCBI_TaxID=7612;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=1976816; DOI=10.1007/bf02109496;
RA   Smith M.J., Banfield D.K., Doteval K., Gorski S., Kowbel D.J.;
RT   "Nucleotide sequence of nine protein-coding genes and 22 tRNAs in the
RT   mitochondrial DNA of the sea star Pisaster ochraceus.";
RL   J. Mol. Evol. 31:195-204(1990).
CC   -!- FUNCTION: Mitochondrial membrane ATP synthase (F(1)F(0) ATP synthase or
CC       Complex V) produces ATP from ADP in the presence of a proton gradient
CC       across the membrane which is generated by electron transport complexes
CC       of the respiratory chain. F-type ATPases consist of two structural
CC       domains, F(1) - containing the extramembraneous catalytic core and F(0)
CC       - containing the membrane proton channel, linked together by a central
CC       stalk and a peripheral stalk. During catalysis, ATP synthesis in the
CC       catalytic domain of F(1) is coupled via a rotary mechanism of the
CC       central stalk subunits to proton translocation. Key component of the
CC       proton channel; it may play a direct role in the translocation of
CC       protons across the membrane.
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, b and c.
CC   -!- SUBCELLULAR LOCATION: Mitochondrion inner membrane; Multi-pass membrane
CC       protein.
CC   -!- SIMILARITY: Belongs to the ATPase A chain family. {ECO:0000305}.
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DR   EMBL; X55514; CAA39128.1; -; Genomic_DNA.
DR   PIR; S14209; S14209.
DR   AlphaFoldDB; P25005; -.
DR   SMR; P25005; -.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005743; C:mitochondrial inner 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   Gene3D; 1.20.120.220; -; 1.
DR   InterPro; IPR000568; ATP_synth_F0_asu.
DR   InterPro; IPR023011; ATP_synth_F0_asu_AS.
DR   InterPro; IPR045083; ATP_synth_F0_asu_bact/mt.
DR   InterPro; IPR035908; F0_ATP_A_sf.
DR   PANTHER; PTHR11410; PTHR11410; 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   Mitochondrion; Mitochondrion inner membrane; Transmembrane;
KW   Transmembrane helix; Transport.
FT   CHAIN           1..228
FT                   /note="ATP synthase subunit a"
FT                   /id="PRO_0000082155"
FT   TRANSMEM        14..34
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        71..91
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        101..121
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        139..159
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        165..185
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        188..208
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   228 AA;  25515 MW;  DC8324B024657ADB CRC64;
     MNLNSIFGQF SPDYFLLMPM TLASMLMAIS WLFFSNSTNW LPTRIGFSFL TFNQTIIKTI
     FQQTNPSSIT WVPIITTVFI LLFSVNVLGL LPYAFTATSH ISLTYSIGIP IWMSVNILGF
     YLSFNSRLSH LVPQGTPSFL LPLMVIIETL SLFAQPIALG LRLAANLTAG HLLIYLMSTA
     IWVLMNNVAI ASITLIIFIL LFLLEIGVAC IQAYVFTALI HFYLVQNL