Reviewed, UniProtKB/Swiss-Prot P57120 (ATPF_BUCAI)

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:	BU004

Organism

Buchnera aphidicola subsp. Acyrthosiphon pisum (Acyrthosiphon pisum symbiotic bacterium) [Complete proteome] [HAMAP]

Taxonomic identifier

118099 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Gammaproteobacteria › Enterobacteriales › Enterobacteriaceae › Buchnera

Protein attributes

Sequence length	161 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 – 161	161	ATP synthase subunit b HAMAP MF_01398		PRO_0000082367
Regions
	Transmembrane	11 – 31	21	Potential

Sequences

	Sequence		Length	Mass (Da)
	P57120-1 [UniParc]. Last modified December 1, 2000. Version 1. Checksum: D13CF1ACE53545F3	FASTA	161	18,423
	10 20 30 40 50 60 MNLNATILGQ AISFVLFVWF CMKYIWPPII LAIETRQKEI KESLTNAKKA RDELYILEKK 70 80 90 100 110 120 IHQNIIDAKQ KASNILNSAN KQKVSILEDA RNQALEESKK IILNTQSEIN IAITHARKNL 130 140 150 160 HKEVVDLSIS MAEKIIKKNI SKDDNQELLD ELVTSLSQVK N

References

[1]	"Genome sequence of the endocellular bacterial symbiont of aphids Buchnera sp. APS." Shigenobu S., Watanabe H., Hattori M., Sakaki Y., Ishikawa H. Nature 407:81-86(2000) [PubMed: 10993077] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: Tokyo 1998.

Cross-references

Sequence databases
EMBLGenBankDDBJ	BA000003 Genomic DNA. Translation: BAB12732.1.
RefSeq	NP_239846.1.
3D structure databases
ModBase	Search...
Genome annotation databases
GeneID	1109513.
GenomeReviews	Gene locus BU004 in contig BA000003_GR.
KEGG	buc:BU004.
Organism-specific databases
CMR	Search...
Phylogenomic databases
HOGENOM	P57120.
OMA	GDANGSH
Enzyme and pathway databases
BioCyc	BSP107806:BU004-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_BUCAI

Accession

Primary (citable) accession number: P57120

Entry history

Integrated into UniProtKB/Swiss-Prot:	December 1, 2000
Last sequence update:	December 1, 2000
Last modified:	November 24, 2009
This is version 57 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

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