FEATURES

FAMILY

DESCRIPTION

Also known as ATPA_PICAN, ATP1. Mitochondrial membrane ATP synthase (F(1)F(0) ATP synthase or Complex V) produces ATP from ADP in the presence of a proton gradient across the membrane which is generated by electron transport complexes of the respiratory chain (PubMed:25759169). F-type ATP synthases 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 (PubMed:27791192). 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). Subunits alpha/ATP1 and beta/ATP2 form the catalytic core in F(1) (By similarity). Rotation of the central stalk against the surrounding alpha/ATP1(3)beta/ATP2(3) subunits leads to hydrolysis of ATP in three separate catalytic sites on the beta/ATP2 subunits (By similarity). Subunit alpha/ATP1 does not bear the catalytic high-affinity ATP-binding sites (By similarity). F-type ATP synthases have 2 components, the catalytic core F(1) and the membrane-embedded component F(0), linked together by a central stalk and a peripheral stalk (PubMed:27791192). The central stalk, also called rotor shaft, is often seen as part of F(1) (PubMed:27791192). The peripheral stalk is seen as part of F(0). F(0) contains the membrane channel next to the rotor (PubMed:27791192). F-type ATP synthases form dimers but each monomer functions independently in ATP generation (By similarity). The dimer consists of 18 different polypeptides: ATP1 (subunit alpha, part of F(1), 3 molecules per monomer), ATP2 (subunit beta, part of F(1), 3 molecules per monomer), ATP3 (subunit gamma, part of the central stalk), ATP4 (subunit b, part of the peripheral stalk), ATP5/OSCP (subunit 5/OSCP, part of the peripheral stalk), ATP6 (subunit a, part of the peripheral stalk), ATP7 (subunit d, part of the peripheral stalk), ATP8 (subunit 8, part of the peripheral stalk), OLI1 (subunit c, part of the rotor, 10 molecules per monomer), ATP14 (subunit h, part of the peripheral stalk), ATP15 (subunit epsilon, part of the central stalk), ATP16 (subunit delta, part of the central stalk), ATP17 (subunit f, part of the peripheral stalk), ATP18 (subunit i/j, part of the peripheral stalk) (PubMed:27791192, PubMed:25759169). Dimer-specific subunits are ATP19 (subunit k, at interface between monomers), ATP20 (subunit g, at interface between monomers), TIM11 (subunit e, at interface between monomers) (By similarity). Also contains subunit L (PubMed:25759169).

EXTERNAL LINKS

ATP1

Mutations

Mutation(s) distribution

Mutations table