ID   ATPA2_METCA             Reviewed;         503 AA.
AC   Q603U2;
DT   30-MAY-2006, integrated into UniProtKB/Swiss-Prot.
DT   23-NOV-2004, sequence version 1.
DT   25-MAY-2022, entry version 109.
DE   RecName: Full=ATP synthase subunit alpha 2 {ECO:0000255|HAMAP-Rule:MF_01346};
DE            EC=7.1.2.2 {ECO:0000255|HAMAP-Rule:MF_01346};
DE   AltName: Full=ATP synthase F1 sector subunit alpha 2 {ECO:0000255|HAMAP-Rule:MF_01346};
DE   AltName: Full=F-ATPase subunit alpha 2 {ECO:0000255|HAMAP-Rule:MF_01346};
GN   Name=atpA2 {ECO:0000255|HAMAP-Rule:MF_01346}; Synonyms=atpA-2;
GN   OrderedLocusNames=MCA2707;
OS   Methylococcus capsulatus (strain ATCC 33009 / NCIMB 11132 / Bath).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Methylococcales;
OC   Methylococcaceae; Methylococcus.
OX   NCBI_TaxID=243233;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 33009 / NCIMB 11132 / Bath;
RX   PubMed=15383840; DOI=10.1371/journal.pbio.0020303;
RA   Ward N.L., Larsen O., Sakwa J., Bruseth L., Khouri H.M., Durkin A.S.,
RA   Dimitrov G., Jiang L., Scanlan D., Kang K.H., Lewis M.R., Nelson K.E.,
RA   Methe B.A., Wu M., Heidelberg J.F., Paulsen I.T., Fouts D.E., Ravel J.,
RA   Tettelin H., Ren Q., Read T.D., DeBoy R.T., Seshadri R., Salzberg S.L.,
RA   Jensen H.B., Birkeland N.K., Nelson W.C., Dodson R.J., Grindhaug S.H.,
RA   Holt I.E., Eidhammer I., Jonasen I., Vanaken S., Utterback T.R.,
RA   Feldblyum T.V., Fraser C.M., Lillehaug J.R., Eisen J.A.;
RT   "Genomic insights into methanotrophy: the complete genome sequence of
RT   Methylococcus capsulatus (Bath).";
RL   PLoS Biol. 2:1616-1628(2004).
CC   -!- FUNCTION: Produces ATP from ADP in the presence of a proton gradient
CC       across the membrane. The alpha chain is a regulatory subunit.
CC       {ECO:0000255|HAMAP-Rule:MF_01346}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + 4 H(+)(in) + H2O = ADP + 5 H(+)(out) + phosphate;
CC         Xref=Rhea:RHEA:57720, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:30616, ChEBI:CHEBI:43474, ChEBI:CHEBI:456216; EC=7.1.2.2;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01346};
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       {ECO:0000255|HAMAP-Rule:MF_01346}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC       Rule:MF_01346}; Peripheral membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_01346}.
CC   -!- SIMILARITY: Belongs to the ATPase alpha/beta chains family.
CC       {ECO:0000255|HAMAP-Rule:MF_01346}.
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DR   EMBL; AE017282; AAU91234.1; -; Genomic_DNA.
DR   RefSeq; WP_010961916.1; NC_002977.6.
DR   AlphaFoldDB; Q603U2; -.
DR   SMR; Q603U2; -.
DR   STRING; 243233.MCA2707; -.
DR   EnsemblBacteria; AAU91234; AAU91234; MCA2707.
DR   KEGG; mca:MCA2707; -.
DR   eggNOG; COG0056; Bacteria.
DR   HOGENOM; CLU_010091_2_1_6; -.
DR   OMA; MLPAIDI; -.
DR   OrthoDB; 837522at2; -.
DR   Proteomes; UP000006821; Chromosome.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0045261; C:proton-transporting ATP synthase complex, catalytic core F(1); IEA:UniProtKB-KW.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0046933; F:proton-transporting ATP synthase activity, rotational mechanism; IEA:UniProtKB-UniRule.
DR   GO; GO:0046961; F:proton-transporting ATPase activity, rotational mechanism; IEA:UniProtKB-EC.
DR   Gene3D; 1.20.150.20; -; 1.
DR   Gene3D; 2.40.30.20; -; 1.
DR   Gene3D; 3.40.50.300; -; 1.
DR   HAMAP; MF_01346; ATP_synth_alpha_bact; 1.
DR   InterPro; IPR023366; ATP_synth_asu-like_sf.
DR   InterPro; IPR000793; ATP_synth_asu_C.
DR   InterPro; IPR038376; ATP_synth_asu_C_sf.
DR   InterPro; IPR005294; ATP_synth_F1_asu.
DR   InterPro; IPR020003; ATPase_a/bsu_AS.
DR   InterPro; IPR036121; ATPase_F1/V1/A1_a/bsu_N_sf.
DR   InterPro; IPR000194; ATPase_F1/V1/A1_a/bsu_nucl-bd.
DR   InterPro; IPR027417; P-loop_NTPase.
DR   Pfam; PF00006; ATP-synt_ab; 1.
DR   Pfam; PF00306; ATP-synt_ab_C; 1.
DR   SUPFAM; SSF50615; SSF50615; 1.
DR   SUPFAM; SSF52540; SSF52540; 1.
DR   TIGRFAMs; TIGR00962; atpA; 1.
DR   PROSITE; PS00152; ATPASE_ALPHA_BETA; 1.
PE   3: Inferred from homology;
KW   ATP synthesis; ATP-binding; Cell inner membrane; Cell membrane; CF(1);
KW   Hydrogen ion transport; Ion transport; Membrane; Nucleotide-binding;
KW   Reference proteome; Translocase; Transport.
FT   CHAIN           1..503
FT                   /note="ATP synthase subunit alpha 2"
FT                   /id="PRO_0000238286"
FT   SITE            371
FT                   /note="Required for activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01346"
SQ   SEQUENCE   503 AA;  54947 MW;  584C3ABB8F5C2414 CRC64;
     MNAGSENSTP RISEPASPLA QAVHIGDYRP RLRIGEYGTV ASVGDGIAWV TGLPSAAMDD
     VLMFEDGSWA VVFALTKKRI GAVLLHQSEN LTAGTPARLA GRTLDVPVGE TLLGRVIDPI
     GNPLDGGRPL ETRNRRPLDS PSPPIIARDF VQQPLYTGTR LVDTLVPIGK GQRQLIIGDE
     GTGRSSLAID AVLNQKGREV RCVYVLIGQK RSTVVGTIEL LRNYGALAYT TVVVGEAGSL
     PGLKYLAPFA GCAIAEDWMA RGHDTLVVYD DLSTHAQTYR ELSLLLRRPP GREAYPGDIF
     YLHARLLERA TALNPANGGG SMTALPIVET RLGEIEAYIP TNLISITDGQ IYLDSDLFAA
     GFKPAIDVTR SVSRIGGKAQ HPRIKEEAGR MKLDYLQFLE LEIFTRFGAR LESGMEARIR
     RGRLLREILR QERLQPLPPE FQLAWMTAYN EGLLDAMPPG SVQHALNELN SALRNGSPPL
     EASRTDWLTW LRQNLPEPAR GEA