Reaction catalyzed by 5-dimethylallyltryptophan synthase (2.5.1.B31)

		+			=			+
	dimethylallyl diphosphate	+		indole-3-propionate	=		diphosphate	+		3-[5-(3-methylbut-2-en-1-yl)-1H-indol-3-yl]propanoic acid