Reviewed, UniProtKB/Swiss-Prot O51876 (ATPF_BUCAP)

Names and origin

Protein names

Recommended name:
    ATP synthase subunit b
Alternative name(s):
    ATP synthase F(0) sector subunit b
    F-type ATPase subunit b
      Short name=F-ATPase subunit b
    ATPase subunit I

Gene names

Name:	atpF
Ordered Locus Names:	BUsg_004

Organism

Buchnera aphidicola subsp. Schizaphis graminum [Complete proteome] [HAMAP]

Taxonomic identifier

98794 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Gammaproteobacteria › Enterobacteriales › Enterobacteriaceae › Buchnera

Protein attributes

Sequence length	163 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
Protein existence	Inferred from homology.

General annotation (Comments)

Function	F1F0 ATP synthase produces ATP from ADP in the presence of a proton or sodium gradient. F-type ATPases consist of two structural domains, F1 containing the extramembraneous catalytic core and F0 containing the membrane proton channel, linked together by a central stalk and a peripheral stalk. During catalysis, ATP synthesis in the catalytic domain of F1 is coupled via a rotary mechanism of the central stalk subunits to proton translocation By similarity. Component of the F0 channel, it forms part of the peripheral stalk, linking F1 to F0 By similarity.
Subunit structure	F-type ATPases have 2 components, F1 - the catalytic core - and F0 - the membrane proton channel. F1 has five subunits: alpha3, beta3, gamma1, delta1, epsilon1. F0 has three main subunits: a1, b2 and c(10-14). The alpha and beta chains form an alternating ring which encloses part of the gamma chain. F1 is attached to F0 by a central stalk formed by the gamma and epsilon chains, while a peripheral stalk is formed by the delta and b chains By similarity.
Subcellular location	Cell membrane; Single-pass membrane protein By similarity.
Sequence similarities	Belongs to the ATPase B chain family.

Ontologies

Keywords
Biological process	ATP synthesis Hydrogen ion transport Ion transport Transport
Cellular component	CF(0) Cell membrane Membrane
Domain	Transmembrane
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	ATP synthesis coupled proton transport Inferred from electronic annotation. Source: InterPro
Cellular component	integral to membrane Inferred from electronic annotation. Source: UniProtKB-SubCell plasma membrane Inferred from electronic annotation. Source: UniProtKB-KW proton-transporting ATP synthase complex, coupling factor F(o) Inferred from electronic annotation. Source: UniProtKB-KW
Molecular function	hydrogen ion transporting ATP synthase activity, rotational mechanism Inferred from electronic annotation. Source: HAMAP
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 163	163	ATP synthase subunit b HAMAP MF_01398		PRO_0000082368
Regions
	Transmembrane	13 – 33	21	Potential
Experimental info
	Sequence conflict	156 – 163	8	LSKDKKLI → FI Ref.1
	Sequence conflict	156 – 163	8	LSKDKKLI → FI Ref.2

Sequences

	Sequence		Length	Mass (Da)
	O51876-1 [UniParc]. Last modified August 30, 2002. Version 2. Checksum: 3D4AE37A44255146	FASTA	163	19,075
	10 20 30 40 50 60 MNLNATILGQ ALSFILFVWF CMKYIWPPII FAIETRQKNI EESLISLKKA EEELIIIQKK 70 80 90 100 110 120 MNQIIQDSKE KASFIINEAN KKKSIILEDA KSIALEESKK IFLRNQLEID LKVMQVRKNL 130 140 150 160 HKEIVDLSIL IAEKIIKDNI QKDQYKYSIK KLIVSLSKDK KLI

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"The (F1F0) ATP synthase of Buchnera aphidicola (endosymbiont of aphids): genetic analysis of the putative ATP operon." Clark M.A., Baumann P. Curr. Microbiol. 35:84-89(1997) [PubMed: 9216881] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[2]	"Sequence analysis of a 34.7-kb DNA segment from the genome of Buchnera aphidicola (endosymbiont of aphids) containing groEL, dnaA, the atp operon, gidA, and rho." Clark M.A., Baumann L., Baumann P. Curr. Microbiol. 36:158-163(1998) [PubMed: 9516544] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[3]	"50 million years of genomic stasis in endosymbiotic bacteria." Tamas I., Klasson L., Canbaeck B., Naeslund A.K., Eriksson A.-S., Wernegreen J.J., Sandstroem J.P., Moran N.A., Andersson S.G.E. Science 296:2376-2379(2002) [PubMed: 12089438] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBLGenBankDDBJ	AF008210 Genomic DNA. Translation: AAC38114.1. AE013218 Genomic DNA. Translation: AAM67576.1.
RefSeq	NP_660365.1.
3D structure databases
ModBase	Search...
Genome annotation databases
GeneID	1005824.
GenomeReviews	Gene locus BUsg_004 in contig AE013218_GR.
KEGG	bas:BUsg004.
Organism-specific databases
CMR	Search...
Phylogenomic databases
HOGENOM	O51876.
OMA	ASQRSSE
Enzyme and pathway databases
BioCyc	BAPH198804:BUSG004-MON.
Family and domain databases
HAMAP	MF_01398. [Tree]
InterPro	IPR002146. ATPase_F0-cplx_b/b'su_bac. IPR005864. ATPase_F0-cplx_bsu_bac. [Graphical view]
Pfam	PF00430. ATP-synt_B. 1 hit. [Graphical view]
TIGRFAMs	TIGR01144. ATP_synt_b. 1 hit.
ProtoNet	Search...

Entry information

Entry name

ATPF_BUCAP

Accession

Primary (citable) accession number: O51876

Entry history

Integrated into UniProtKB/Swiss-Prot:	December 15, 1998
Last sequence update:	August 30, 2002
Last modified:	November 24, 2009
This is version 69 of the entry and version 2 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HAMAP (High-quality Automated and Manual Annotation of microbial Proteomes)