AC   MF_01399;
DC   Protein; auto
TR   HAMAP; MF_01399; -; 1; level=0
XX
Names: ATP_synth_bprime
XX
ID   ATPF2
case <OC:Cyanobacteriota>
DE   RecName: Full=ATP synthase subunit b';
DE   AltName: Full=ATP synthase F(0) sector subunit b';
DE   AltName: Full=ATPase subunit II;
DE   AltName: Full=F-type ATPase subunit b';
DE            Short=F-ATPase subunit b';
else case <OG:Chloroplast>
DE   RecName: Full=ATP synthase subunit b', chloroplastic;
DE   AltName: Full=ATP synthase F(0) sector subunit b';
DE   AltName: Full=ATPase subunit II;
end case
GN   Name=atpF2; Synonyms=atpG;
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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.
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   -!- 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 four main
CC       subunits: a(1), b(1), b'(1) and c(10-14). The alpha and beta chains
CC       form an alternating ring which encloses part of the gamma chain. F(1)
CC       is 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, b and b'
CC       chains.
case <OG:Chloroplast>
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane; Single-
CC       pass membrane protein.
else case <OC:Cyanobacteriota> and not <OC:Gloeobacter>
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane; Single-pass membrane
CC       protein.
else case <OC:Gloeobacter>
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane; Single-pass membrane
CC       protein.
else case not defined <Property:Membrane> or <Property:Membrane=1>
CC   -!- SUBCELLULAR LOCATION: Cell membrane; Single-pass membrane protein.
else case <Property:Membrane=2>
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane; Single-pass membrane
CC       protein.
end case
case <OG:Chloroplast>
CC   -!- MISCELLANEOUS: In plastids the F-type ATPase is also known as
CC       CF(1)CF(0).
end case
CC   -!- SIMILARITY: Belongs to the ATPase B chain family.
XX
DR   Pfam; PF00430; ATP-synt_B; 1; trigger=no
DR   General; Transmembrane; -; 1; trigger=yes
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KW   ATP synthesis
KW   CF(0)
KW   Hydrogen ion transport
KW   Ion transport
KW   Membrane
KW   Transmembrane
KW   Transport
case <OG:Chloroplast> or <OC:Cyanobacteriota> and not <OC:Gloeobacter>
KW   Thylakoid
else case <OC:Gloeobacter>
KW   Cell membrane
KW   Cell inner membrane
else case not defined <Property:Membrane> or <Property:Membrane=1>
KW   Cell membrane
else case <Property:Membrane=2>
KW   Cell membrane
KW   Cell inner membrane
end case
KW   Transmembrane helix
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GO   GO:0046933; F:proton-transporting ATP synthase activity, rotational mechanism
case <OC:Cyanobacteriota> and not <OC:Gloeobacter>
GO   GO:0042651; C:thylakoid membrane
else case <OG:Chloroplast>
GO   GO:0009535; C:chloroplast thylakoid membrane
else
GO   GO:0015986; P:proton motive force-driven ATP synthesis
GO   GO:0005886; C:plasma membrane
end case
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FT   None
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Size: 138-207;
Related: MF_01398;
Template: P12410; O05332;
Scope:
 Bacteria; Cyanobacteriota
 Plastid
Fusion:
 Nter: None
 Cter: None
Duplicate: None
Plasmid: None
Comments: Restricted to cyanobacteria and chloroplasts. In order to
 decrease confusion with the non-cyanobacterial atpG (gamma) subunit this
 has been renamed to ATPF2 and given the gene name atpF2. The historical
 gene name atpG is kept as a synonym.
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# Revision 1.20 2023/02/17
//