Reaction catalyzed by 5-dimethylallyltryptophan synthase (2.5.1.B31), 4-dimethylallyltryptophan synthase (2.5.1.34), 7-dimethylallyltryptophan synthase (2.5.1.80)
+
=
+
benzyl diphosphate
+
L-tryptophan
=
diphosphate
+
5-benzyl-L-tryptophan