Reaction catalyzed by 4beta-methylsterol monooxygenase (1.14.13.246)
+
NADH
+
+
=
+
+
NAD+
+
H2O
lanosterol
+
NADH
+
H+
+
O2
=
4beta-28-hydroxylanosterol
+
4alpha-28-hydroxylanosterol
+
NAD+
+
H2O
