Reaction catalyzed by calcidiol 1-monooxygenase (1.14.15.18)
+
NADPH
+
=
+
NADP+
+
H2O
(24R),25-dihydroxyvitamin D3
+
NADPH
+
O2
=
1alpha,24,25-trihydroxyvitamin D3
+
NADP+
+
H2O
