MeSH definition : A mitochondrial cytochrome P450 enzyme that catalyzes the side-chain cleavage of C27
cholesterol to C21 pregnenolone in the presence of molecular oxygen and NADPH-FERRIHEMOPROTEIN
REDUCTASE. This enzyme, encoded by CYP11A1 gene, catalyzes the breakage between C20
and C22 which is the initial and rate-limiting step in the biosynthesis of various
gonadal and adrenal steroid hormones.;
A mitochondrial cytochrome P450 enzyme that catalyzes the side-chain cleavage of C27
cholesterol to C21 pregnenolone in the presence of molecular oxygen and NADPH-FERRIHEMOPROTEIN
REDUCTASE. This enzyme, encoded by CYP11A1 gene, catalyzes the breakage between C20
and C22 which is the initial and rate-limiting step in the biosynthesis of various
gonadal and adrenal steroid hormones.