Reaction catalyzed by tryptophan 5-halogenase (1.14.19.58), tryptophan 6-halogenase (1.14.19.59)
+
FADH2
+
chloride
+
+
=
+
+
FAD
+
2
H2O
3-indolepropionate
+
FADH2
+
chloride
+
O2
+
H+
=
6-chloro-3-indolepropionate
+
5-chloro-3-indolepropionate
+
FAD
+
2 H2O
