Reaction catalyzed by 4-dimethylallyltryptophan synthase (2.5.1.34)
+
=
+
+
methylallyl diphosphate
+
L-tryptophan
=
diphosphate
+
4-(2-trans-butenyl)-L-tryptophan
+
5-(2-trans-butenyl)-L-tryptophan
