Reaction catalyzed by cholesterol monooxygenase (side-chain-cleaving) (1.14.15.6)
+
reduced adrenodoxin
+
=
+
+
+
H2O
20-hydroxyvitamin D3
+
reduced adrenodoxin
+
O2
=
20,23-dihydroxyvitamin D3
+
17alpha,20,23-trihydroxyvitamin D3
+
oxidized adrenodoxin
+
H2O
