Reaction catalyzed by phenylalanine 3-monooxygenase (1.14.16.7)
+
+
=
+
a 4a-hydroxy-5,6,7,8-tetrahydropteridine
L-phenylalanine
+
a 5,6,7,8-tetrahydropteridine
+
O2
=
3-hydroxy-L-phenylalanine
+
a 4a-hydroxy-5,6,7,8-tetrahydropteridine
