F(1)-ATPase inhibitor IF(1), mitochondrial

UniProtKB accession:  P01097

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Endogenous ATPase inhibitor, which inhibits specifically the reverse ATPase reaction of mitochondrial F(1)F(0)-type ATP synthase. It limits ATP depletion when the mitochondrial membrane potential falls below a threshold and the F(1)F(0)-ATP synthase starts hydrolyzing ATP to pump protons out of the mitochondrial matrix. Required to avoid the consumption of cellular ATP when the F(1)F(0)-ATP synthase enzyme acts as an ATP hydrolase (PubMed:12167646, PubMed:12809520, PubMed:26420258). Functions through inserting its N-terminal part into the catalytically active F1-ATPase, thereby blocking its rotational movement and subsequently the ATP hydrolase activity (PubMed:23407639).