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Information on EC - 5beta-cholestane-3alpha,7alpha-diol 12alpha-hydroxylase

for references in articles please use BRENDA:EC1.14.14.139
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IUBMB Comments
A cytochrome P-450 (heme-thiolate) protein found in mammals. This is the key enzyme in the biosynthesis of the bile acid cholate. The enzyme can also hydroxylate 5beta-cholestane-3alpha,7alpha-diol at the 25 and 26 position, but to a lesser extent .
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The enzyme appears in viruses and cellular organisms
12-alpha-hydroxylase, 12alpha-hydroxylase CYP8B1, 12alpha-hydroxylase gene, 5beta-cholestane-3alpha,7alpha-diol 12alpha-monooxygenase, 7alpha-hydroxy-4-cholest-3-on3 12alpha-monooxygenase, 7alpha-hydroxy-4-cholesten-3-one 12alpha-monooxygenase, CYP12, CYP8B1, cytochrome P-450 LM4, cytochrome P450 8B1, more
5beta-cholestane-3alpha,7alpha-diol + [reduced NADPH-hemoprotein reductase] + O2 = 5beta-cholestane-3alpha,7alpha,12alpha-triol + [oxidized NADPH-hemoprotein reductase] + H2O
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7alpha-hydroxycholest-4-en-3-one + [reduced NADPH-hemoprotein reductase] + O2 = 7alpha,12alpha-dihydroxycholest-4-en-3-one + [oxidized NADPH-hemoprotein reductase] + H2O
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chenodeoxycholate + [reduced NADPH-hemoprotein reductase] + O2 = cholate + [oxidized NADPH-hemoprotein reductase] + H2O
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