ID A0A2K8SQX2_9NOSO Unreviewed; 190 AA.
AC A0A2K8SQX2;
DT 25-APR-2018, integrated into UniProtKB/TrEMBL.
DT 25-APR-2018, sequence version 1.
DT 24-JAN-2024, entry version 19.
DE RecName: Full=ATP synthase subunit b {ECO:0000256|HAMAP-Rule:MF_01398};
DE AltName: Full=ATP synthase F(0) sector subunit b {ECO:0000256|HAMAP-Rule:MF_01398};
DE AltName: Full=ATPase subunit I {ECO:0000256|HAMAP-Rule:MF_01398};
DE AltName: Full=F-type ATPase subunit b {ECO:0000256|HAMAP-Rule:MF_01398};
DE Short=F-ATPase subunit b {ECO:0000256|HAMAP-Rule:MF_01398};
GN Name=atpF {ECO:0000256|HAMAP-Rule:MF_01398};
GN ORFNames=COO91_03760 {ECO:0000313|EMBL:AUB37808.1};
OS Nostoc flagelliforme CCNUN1.
OC Bacteria; Cyanobacteriota; Cyanophyceae; Nostocales; Nostocaceae; Nostoc.
OX NCBI_TaxID=2038116 {ECO:0000313|EMBL:AUB37808.1, ECO:0000313|Proteomes:UP000232003};
RN [1] {ECO:0000313|EMBL:AUB37808.1, ECO:0000313|Proteomes:UP000232003}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CCNUN1 {ECO:0000313|EMBL:AUB37808.1,
RC ECO:0000313|Proteomes:UP000232003};
RA Shang J.;
RT "Complete genome of a free-living desiccation-tolerant cyanobacterium and
RT its photosynthetic adaptation to extreme terrestrial habitat.";
RL Submitted (NOV-2017) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Component of the F(0) channel, it forms part of the
CC peripheral stalk, linking F(1) to F(0). {ECO:0000256|HAMAP-
CC Rule:MF_01398}.
CC -!- FUNCTION: F(1)F(0) ATP synthase produces ATP from ADP in the presence
CC of a proton or sodium gradient. F-type ATPases consist of two
CC structural domains, F(1) containing the extramembraneous catalytic core
CC and F(0) containing the membrane proton channel, linked together by a
CC central stalk and a peripheral stalk. During catalysis, ATP synthesis
CC in the catalytic domain of F(1) is coupled via a rotary mechanism of
CC the central stalk subunits to proton translocation.
CC {ECO:0000256|ARBA:ARBA00025198, ECO:0000256|HAMAP-Rule:MF_01398}.
CC -!- SUBUNIT: F-type ATPases have 2 components, F(1) - the catalytic core
CC - and F(0) - the membrane proton channel. F(1) has five subunits:
CC alpha(3), beta(3), gamma(1), delta(1), epsilon(1). F(0) has four main
CC subunits: a(1), b(1), b'(1) and c(10-14). The alpha and beta chains
CC form an alternating ring which encloses part of the gamma chain. F(1)
CC is attached to F(0) by a central stalk formed by the gamma and epsilon
CC chains, while a peripheral stalk is formed by the delta, b and b'
CC chains. {ECO:0000256|HAMAP-Rule:MF_01398}.
CC -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000256|HAMAP-
CC Rule:MF_01398}; Single-pass membrane protein {ECO:0000256|HAMAP-
CC Rule:MF_01398}. Membrane {ECO:0000256|ARBA:ARBA00004167}; Single-pass
CC membrane protein {ECO:0000256|ARBA:ARBA00004167}.
CC -!- SIMILARITY: Belongs to the ATPase B chain family. {ECO:0000256|HAMAP-
CC Rule:MF_01398, ECO:0000256|RuleBase:RU003848}.
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DR EMBL; CP024785; AUB37808.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A2K8SQX2; -.
DR KEGG; nfl:COO91_03760; -.
DR OrthoDB; 461217at2; -.
DR Proteomes; UP000232003; Chromosome.
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 CDD; cd06503; ATP-synt_Fo_b; 1.
DR HAMAP; MF_01398; ATP_synth_b_bprime; 1.
DR InterPro; IPR028987; ATP_synth_B-like_membr_sf.
DR InterPro; IPR002146; ATP_synth_b/b'su_bac/chlpt.
DR InterPro; IPR005864; ATP_synth_F0_bsu_bac.
DR NCBIfam; TIGR01144; ATP_synt_b; 1.
DR PANTHER; PTHR34264; ATP SYNTHASE SUBUNIT B, CHLOROPLASTIC; 1.
DR PANTHER; PTHR34264:SF3; ATP SYNTHASE SUBUNIT B, CHLOROPLASTIC; 1.
DR Pfam; PF00430; ATP-synt_B; 1.
DR SUPFAM; SSF81573; F1F0 ATP synthase subunit B, membrane domain; 1.
PE 3: Inferred from homology;
KW ATP synthesis {ECO:0000256|ARBA:ARBA00023310, ECO:0000256|HAMAP-
KW Rule:MF_01398};
KW CF(0) {ECO:0000256|ARBA:ARBA00022547, ECO:0000256|HAMAP-Rule:MF_01398};
KW Coiled coil {ECO:0000256|SAM:Coils};
KW Hydrogen ion transport {ECO:0000256|ARBA:ARBA00022781, ECO:0000256|HAMAP-
KW Rule:MF_01398};
KW Ion transport {ECO:0000256|ARBA:ARBA00023065, ECO:0000256|HAMAP-
KW Rule:MF_01398};
KW Membrane {ECO:0000256|ARBA:ARBA00023136, ECO:0000256|HAMAP-Rule:MF_01398};
KW Reference proteome {ECO:0000313|Proteomes:UP000232003};
KW Thylakoid {ECO:0000256|HAMAP-Rule:MF_01398};
KW Transmembrane {ECO:0000256|ARBA:ARBA00022692, ECO:0000256|HAMAP-
KW Rule:MF_01398};
KW Transmembrane helix {ECO:0000256|ARBA:ARBA00022989, ECO:0000256|HAMAP-
KW Rule:MF_01398};
KW Transport {ECO:0000256|ARBA:ARBA00022448, ECO:0000256|HAMAP-Rule:MF_01398}.
FT COILED 74..160
FT /evidence="ECO:0000256|SAM:Coils"
SQ SEQUENCE 190 AA; 20381 MW; D1034EDC8799FFBF CRC64;
MGIMGTFLLL AAEANAVHSE LAEGAGEGGF GLNLDIFETN LINLAILVGI LFYFGRKVLS
NILNERQSNI ATAIQEAEGR LKEAKTALSQ AQEQLKQSQA EAERIRQSAV ENAQKTKEAL
LAKAAQDVER LKQTAAADLN TETERAIAQL RQRVAALALQ KVESQLKGGI ADDAQQSLID
RSIAQLGGNV
//
