propionyl-CoA carboxylase


Also found in: Wikipedia.

pro·pi·o·nyl-CoA car·box·yl·ase

an enzyme that catalyzes the reaction of propionyl-CoA with CO2 and ATP to produce ADP, orthophosphate, and d-methylmalonyl-CoA; a biotin-dependent enzyme; an inherited deficiency of this enzyme will lead to propionic acidemia and developmental retardation.
References in periodicals archive ?
Samples obtained from the original NBS specimens of confirmed cases with [beta]-cystathionine synthase deficiency (n = 4), propionyl-CoA carboxylase deficiency (n = 2), methylmalonyl-CoA mutase deficiency (n = 4), Cbl C deficiency (n = 7), various remethylation disorders [methylenetetrahydrofolate reductase (MTHFR), n = 3; Cbl G, n = 3; Cbl D variant 1, n = 1], and maternal vitamin [B.
Patients are deficient in propionyl-CoA carboxylase (PCC), an enzyme that utilizes certain amino acids found in protein.
Normally propionyl-CoA is metabolized to methylmalonyl-CoA by the action of propionyl-CoA carboxylase (PCC), but if the metabolite is in excess the propionyl species is released from the mitochondrion after conversion by carnitine palmitoyl transferase II to the corresponding acylcarnitine (Fig.
PA results from a deficiency of mitochondrial propionyl-CoA carboxylase, an enzyme that requires biotin as a cofactor and converts propionyl-CoA to D-methylmalonyl-CoA.
PA is caused by deficiency of propionyl-CoA carboxylase, whereas MMA results from deficiency of either methylmalonyl-CoA mutase or defects in the production of adenosylcobalamin.