ID   ATPF_CITK8              Reviewed;         156 AA.
AC   A8ACP2;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   23-OCT-2007, sequence version 1.
DT   02-SEP-2026, entry version 96.
DE   RecName: Full=ATP synthase subunit b {ECO:0000255|HAMAP-Rule:MF_01398};
DE   AltName: Full=ATP synthase F(0) sector subunit b {ECO:0000255|HAMAP-Rule:MF_01398};
DE   AltName: Full=ATPase subunit I {ECO:0000255|HAMAP-Rule:MF_01398};
DE   AltName: Full=F-type ATPase subunit b {ECO:0000255|HAMAP-Rule:MF_01398};
DE            Short=F-ATPase subunit b {ECO:0000255|HAMAP-Rule:MF_01398};
GN   Name=atpF {ECO:0000255|HAMAP-Rule:MF_01398};
GN   OrderedLocusNames=CKO_00076;
OS   Citrobacter koseri (strain ATCC BAA-895 / CDC 4225-83 / SGSC4696).
OC   Bacteria; Pseudomonadati; Pseudomonadota; Gammaproteobacteria;
OC   Enterobacterales; Enterobacteriaceae; Citrobacter.
OX   NCBI_TaxID=290338;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-895 / CDC 4225-83 / SGSC4696;
RG   The Citrobacter koseri Genome Sequencing Project;
RA   McClelland M., Sanderson E.K., Porwollik S., Spieth J., Clifton W.S.,
RA   Latreille P., Courtney L., Wang C., Pepin K., Bhonagiri V., Nash W.,
RA   Johnson M., Thiruvilangam P., Wilson R.;
RL   Submitted (AUG-2007) to the EMBL/GenBank/DDBJ databases.
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. {ECO:0000255|HAMAP-
CC       Rule:MF_01398}.
CC   -!- FUNCTION: Component of the F(0) channel, it forms part of the
CC       peripheral stalk, linking F(1) to F(0). {ECO:0000255|HAMAP-
CC       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 three main
CC       subunits: a(1), b(2) and c(10-14). The alpha and beta chains form an
CC       alternating ring which encloses part of the gamma chain. F(1) is
CC       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 and b chains.
CC       {ECO:0000255|HAMAP-Rule:MF_01398}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC       Rule:MF_01398}; Single-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_01398}.
CC   -!- SIMILARITY: Belongs to the ATPase B chain family. {ECO:0000255|HAMAP-
CC       Rule:MF_01398}.
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DR   EMBL; CP000822; ABV11255.1; -; Genomic_DNA.
DR   RefSeq; WP_003827022.1; NC_009792.1.
DR   AlphaFoldDB; A8ACP2; -.
DR   BMRB; A8ACP2; -.
DR   SMR; A8ACP2; -.
DR   STRING; 290338.CKO_00076; -.
DR   GeneID; 89551327; -.
DR   GeneID; 93035278; -.
DR   KEGG; cko:CKO_00076; -.
DR   HOGENOM; CLU_079215_4_5_6; -.
DR   OrthoDB; 9788020at2; -.
DR   Proteomes; UP000008148; Chromosome.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0045259; C:proton-transporting ATP synthase complex; IEA:InterPro.
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:TreeGrafter.
DR   CDD; cd06503; ATP-synt_Fo_b; 1.
DR   FunFam; 1.20.5.620:FF:000001; ATP synthase subunit b; 1.
DR   Gene3D; 1.20.5.620; F1F0 ATP synthase subunit B, membrane domain; 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   InterPro; IPR050059; ATP_synthase_B_chain.
DR   NCBIfam; TIGR01144; ATP_synt_b; 1.
DR   NCBIfam; NF004411; PRK05759.1-2; 1.
DR   NCBIfam; NF004413; PRK05759.1-4; 1.
DR   PANTHER; PTHR33445:SF1; ATP SYNTHASE SUBUNIT B; 1.
DR   PANTHER; PTHR33445; 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; Cell inner membrane; Cell membrane; CF(0);
KW   Hydrogen ion transport; Ion transport; Membrane; Reference proteome;
KW   Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           1..156
FT                   /note="ATP synthase subunit b"
FT                   /id="PRO_0000368416"
FT   TRANSMEM        11..31
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01398"
SQ   SEQUENCE   156 AA;  17264 MW;  3065E6814E30D88E CRC64;
     MNLNATILGQ AIAFVLFVLF CMKYVWPPLM AAIEKRQKEI ADGLASAERA HKDLDLAKAS
     ATDQLKKAKA EAQVIIEQAN KRRAQILDEA KTEAEQERTK IVAQAQAEID AERKRAREEL
     RKQVAILAVA GAEKIIERSV DEAANSDIVD KLVAEL
//