. "Catalysis of the reaction: dimethylallyl diphosphate + L-tryptophan = diphosphate + 4-(3-methylbut-2-enyl)-L-tryptophan." . . "tryptophan dimethylallyltransferase activity" . "4-(gamma,gamma-dimethylallyl)tryptophan synthase activity" . "dimethylallyl-diphosphate:L-tryptophan dimethylallyltransferase activity" . "dimethylallylpyrophosphate:L-tryptophan dimethylallyltransferase activity" . "dimethylallylpyrophosphate:tryptophan dimethylallyl transferase activity" . "dimethylallyltryptophan synthetase activity" . "DMAT synthetase activity" . . .