Recombinant Mouse ATP synthase subunit beta, mitochondrial (ATP5B), partial

Function

Catalytic subunit beta, of the mitochondrial membrane ATP synthase complex (F(1)F(0) ATP synthase or Complex V) that 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 (Probable) (PubMed:21281446). ATP synthase complex consist of a soluble F(1) head domain - the catalytic core - and a membrane F(1) domain - the membrane proton channel. These two domains are linked by a central stalk rotating inside the F(1) region and a stationary 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). In vivo, can only synthesize ATP although its ATP hydrolase activity can be activated artificially in vitro (By similarity). With the subunit alpha (ATP5F1A), forms the catalytic core in the F(1) domain (By similarity)

Subcellular Location

Mitochondrion inner membrane (Peripheral membrane protein)

Subunit

Homotrimer. Component of the ATP synthase complex composed at least of ATP5F1A/subunit alpha, ATP5F1B/subunit beta, ATP5MC1/subunit c (homooctamer), MT-ATP6/subunit a, MT-ATP8/subunit 8, ATP5ME/subunit e, ATP5MF/subunit f, ATP5MG/subunit g, ATP5MK/subunit k, ATP5MJ/subunit j, ATP5F1C/subunit gamma, ATP5F1D/subunit delta, ATP5F1E/subunit epsilon, ATP5PF/subunit F6, ATP5PB/subunit b, ATP5PD/subunit d, ATP5PO/subunit OSCP. ATP synthase complex consists of a soluble F(1) head domain (subunits alpha(3) and beta(3)) - the catalytic core - and a membrane F(0) domain - the membrane proton channel (subunits c, a, 8, e, f, g, k and j). These two domains are linked by a central stalk (subunits gamma, delta, and epsilon) rotating inside the F1 region and a stationary peripheral stalk (subunits F6, b, d, and OSCP) (By similarity). Interacts with PPIF (PubMed:21281446). Interacts with BCL2L1 isoform BCL-X(L); the interaction mediates the association of BCL2L1 isoform BCL-X(L) with the mitochondrial membrane F(1)F(0) ATP synthase and enhances neurons metabolic efficiency (By similarity). Interacts with CLN5 and PPT1 (PubMed:19941651). Interacts with S100A1; this interaction increases F1-ATPase activity (PubMed:17438143). Interacts with MTLN. Interacts with TTC5/STRAP; the interaction results in decreased mitochondrial ATP production (By similarity). Interacts with MIMS2; the interaction regulates mitochondrial energy metabolism (By similarity)

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