| Synonyms |
5beta-cholestane-3 alpha,7alpha,12alpha,26-tetrol dehydrogenase, 5beta-cholestane-3 alpha,7alpha,12alpha-triol-26-al oxidoreductase, 5beta-cholestane-3alpha,7alpha,12alpha-triol 26-hydroxylase, 5beta-cholestane-3alpha,7alpha,12alpha-triol 27-monooxygenase, 5beta-cholestane-3alpha,7alpha,12alpha-triol hydroxylase, cholestanetriol 26-hydroxylase, cholestanetriol 27-hydroxylase, cholesterol C-26 hydroxylase, cholesterol hydroxylase, CYP125A4, CYP27, CYP27A, CYP27A1, cytochrome P-450 sterol 26-hydroxylase, cytochrome P-450A, cytochrome P450 125A4, cytochrome P450 27A, cytochrome P450c27, dehydrogenase, cholestanetetrol 26-, hydroxylase, 5beta-cholestane-3alpha,7alpha,12alpha-triol, More, oxygenase, cholestanetriol 26-mono-, P450 27A1, sterol 27-hydroxylase, TEHC-NAD oxidoreductase, vitamin D3 25-hydroxylase |
| Comments |
This mitochondrial cytochrome P-450 enzyme requires adrenodoxin. It catalyses the first three sterol side chain oxidations in bile acid biosynthesis via the neutral (classic) pathway. Can also act on cholesterol, cholest-5-en-3¦Â,7¦Á-diol, 7¦Á-hydroxycholest-4-en-3-one, and 5¦Â-cholestane-3¦Á,7¦Á-diol. The enzyme can also hydroxylate cholesterol at positions 24 and 25. The initial source of the electrons is NADPH, which transfers the electrons to the adrenodoxin via EC 1.18.1.6, adrenodoxin-NADP+ reductase. |
