Reaction catalyzed by cholestanetriol 26-monooxygenase (1.14.15.15)
1alpha-hydroxyvitamin D3
+
reduced adrenodoxin
+
=
+
+
H2O
1alpha-hydroxyvitamin D3
+
reduced adrenodoxin
+
O2
=
1alpha,25-dihydroxyvitamin D3
+
oxidized adrenodoxin
+
H2O
