Reaction catalyzed by 4-hydroxyphenylacetate 3-monooxygenase (1.14.14.9)
+
NAD(P)H
+
=
+
NAD(P)+
+
H2O
4-hydroxyphenylacetate
+
NAD(P)H
+
O2
=
3,4-dihydroxyphenylacetate
+
NAD(P)+
+
H2O
