Reaction catalyzed by tryptophan 5-monooxygenase (1.14.16.4)
+
+
=
+
+
H2O
4-azatryptophan
+
6-methyltetrahydropterin
+
O2
=
5-hydroxy-4-azatryptophan
+
6-methyldihydropterin
+
H2O
