HAMAP

Accession	MF_01399
Dates	9-MAR-2009 (Created) 30-JUN-2011 (Last updated, Version 10)

Data class

Protein

Predictors

HAMAP; MF_01399; [distribution of match scores in UniProtKB];[seed alignment for MF_01399]

Names

ATP_synth_b_prime_bac

Identifier

ATPX

Protein name

RecName: Full=ATP synthase subunit b'; AltName: Full=ATP synthase F(0) sector subunit b'; AltName: Full=ATPase subunit II; AltName: Full=F-type ATPase subunit b'; Short=F-ATPase subunit b';

Protein name

RecName: Full=ATP synthase subunit b/b'; AltName: Full=ATP synthase F(0) sector subunit b/b'; AltName: Full=ATPase subunit II; AltName: Full=F-type ATPase subunit b/b'; Short=F-ATPase subunit b/b';

Protein name

RecName: Full=ATP synthase subunit b', chloroplastic; AltName: Full=ATP synthase F(0) sector subunit b'; AltName: Full=ATPase subunit II;

Gene name

atpG

FUNCTION: F(1)F(0) ATP synthase produces ATP from ADP in the presence of a proton or sodium gradient. F-type ATPases consist of two structural domains, F(1) containing the extramembraneous catalytic core and F(0) containing the membrane proton channel, linked together by a central stalk and a peripheral stalk. During catalysis, ATP synthesis in the catalytic domain of F(1) is coupled via a rotary mechanism of the central stalk subunits to proton translocation (By similarity).

FUNCTION: Component of the F(0) channel, it forms part of the peripheral stalk, linking F(1) to F(0). The b'-subunit is a diverged and duplicated form of b found in plants and photosynthetic bacteria (By similarity).

SUBUNIT: F-type ATPases have 2 components, F(1) - the catalytic core - and F(0) - the membrane proton channel. F(1) has five subunits: alpha(3), beta(3), gamma(1), delta(1), epsilon(1). F(0) has four main subunits: a(1), b(1), b'(1) and c(10-14). The alpha and beta chains form an alternating ring which encloses part of the gamma chain. F(1) is attached to F(0) by a central stalk formed by the gamma and epsilon chains, while a peripheral stalk is formed by the delta, b and b' chains (By similarity).

SUBUNIT: F-type ATPases have 2 components, F(1) - the catalytic core - and F(0) - the membrane proton channel. F(1) has five subunits: alpha(3), beta(3), gamma(1), delta(1), epsilon(1). F(0) has four main subunits: a(1), b/b'(2) and c(10-14). The alpha and beta chains form an alternating ring which encloses part of the gamma chain. F(1) is attached to F(0) by a central stalk formed by the gamma and epsilon chains, while a peripheral stalk is formed by the delta and b/b' chains (By similarity).

SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane; Single-pass membrane protein (By similarity).

SUBCELLULAR LOCATION: Cellular thylakoid membrane; Single-pass membrane protein (By similarity).

SUBCELLULAR LOCATION: Cell inner membrane; Single-pass membrane protein (By similarity).

SUBCELLULAR LOCATION: Cell membrane; Single-pass membrane protein (By similarity).

SUBCELLULAR LOCATION: Cell inner membrane; Single-pass membrane protein (By similarity).

MISCELLANEOUS: In plastids the F-type ATPase is also known as CF(1)CF(0).

SIMILARITY: Belongs to the ATPase B chain family.

Pfam	PF00430; ATP-synt_B; 1;
General	Transmembrane; -; 1; trigger=Yes;

ATP synthesis, CF(0), Hydrogen ion transport, Ion transport, Membrane, Transmembrane, Transport.

Thylakoid.

Cell membrane, Cell inner membrane.

Cell membrane.

Cell membrane, Cell inner membrane.

Transmembrane helix.

GO:0046933; Molecular function: hydrogen ion transporting ATP synthase activity, rotational mechanism.

GO:0042651; Cellular component: thylakoid membrane.

GO:0009535; Cellular component: chloroplast thylakoid membrane.

GO:0042777; Biological process: plasma membrane ATP synthesis coupled proton transport.
GO:0005886; Cellular component: plasma membrane.

Size range:	138-207 amino acids
Related UniRules:	MF_01398 (ATPF)
Template:	P12410 (ATPX_NOSS1); O05332 (ATPX_RHOCA): [Recover all]
Scope:	Bacteria; Cyanobacteria Bacteria; Rhizobiales Bacteria; Rhodobacterales Bacteria; Rhodospirillales Plastid
Fusion:	Nter: None; Cter: None
Duplicate:	None
Plasmid encoded:	None
Comments:	Quite a few non-model bacteria have more than 1 copy of this protein, including putative copies of the b' subunit; exactly which copies are found in the enzyme requires more study.