ID   ATPF2_METRJ             Reviewed;         192 AA.
AC   B1LWM1;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   29-APR-2008, sequence version 1.
DT   25-MAY-2022, entry version 68.
DE   RecName: Full=ATP synthase subunit b 2;
DE   AltName: Full=ATP synthase F(0) sector subunit b 2;
DE   AltName: Full=ATPase subunit I 2;
DE   AltName: Full=F-type ATPase subunit b 2;
DE            Short=F-ATPase subunit b 2;
GN   Name=atpF2; Synonyms=atpG; OrderedLocusNames=Mrad2831_0712;
OS   Methylobacterium radiotolerans (strain ATCC 27329 / DSM 1819 / JCM 2831 /
OS   NBRC 15690 / NCIMB 10815 / 0-1).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Methylobacteriaceae; Methylobacterium.
OX   NCBI_TaxID=426355;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 27329 / DSM 1819 / JCM 2831 / NBRC 15690 / NCIMB 10815 / 0-1;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA   Bruce D., Goodwin L., Pitluck S., Kiss H., Brettin T., Detter J.C., Han C.,
RA   Kuske C.R., Schmutz J., Larimer F., Land M., Hauser L., Kyrpides N.,
RA   Mikhailova N., Marx C.J., Richardson P.;
RT   "Complete sequence of chromosome of Methylobacterium radiotolerans JCM
RT   2831.";
RL   Submitted (MAR-2008) 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 (By similarity).
CC       {ECO:0000250}.
CC   -!- FUNCTION: Component of the F(0) channel, it forms part of the
CC       peripheral stalk, linking F(1) to F(0). The b'-subunit is a diverged
CC       and duplicated form of b found in plants and photosynthetic bacteria
CC       (By similarity). {ECO:0000250}.
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       (By similarity). {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000250}; Single-pass
CC       membrane protein {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the ATPase B chain family. {ECO:0000305}.
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DR   EMBL; CP001001; ACB22723.1; -; Genomic_DNA.
DR   RefSeq; WP_012317717.1; NC_010505.1.
DR   AlphaFoldDB; B1LWM1; -.
DR   SMR; B1LWM1; -.
DR   STRING; 426355.Mrad2831_0712; -.
DR   EnsemblBacteria; ACB22723; ACB22723; Mrad2831_0712.
DR   KEGG; mrd:Mrad2831_0712; -.
DR   eggNOG; COG0711; Bacteria.
DR   HOGENOM; CLU_079215_1_2_5; -.
DR   OMA; NQIFWLV; -.
DR   OrthoDB; 1544382at2; -.
DR   Proteomes; UP000006589; Chromosome.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005886; C:plasma 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   HAMAP; MF_01398; ATP_synth_b_bprime; 1.
DR   InterPro; IPR002146; ATP_synth_b/b'su_bac/chlpt.
DR   Pfam; PF00430; ATP-synt_B; 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..192
FT                   /note="ATP synthase subunit b 2"
FT                   /id="PRO_0000369013"
FT   TRANSMEM        39..59
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   192 AA;  20549 MW;  FBA4DE67F03A77CE CRC64;
     MAQPNPLTTP PPGADTQVVP GHVEHTEAHS GAFPPFETSG FLAQLIWLAL AFGLLYYLMD
     KIALPRIQSI LHARAERLRA DLDQAQAMKA EADAAGVAFE TALRDAQGKA RDIAQTTRNE
     LAAEAETKRK ALEDELNAKL SASEATIRTR TEAAMGNVRT IAGEAASAIV ERLTGQAPDR
     TSLDRALDAT AH