SEARCH Articles Figures Tables Amino acid tryptophanase Bacterial Degradation via Indole. The Tryptophanase Reaction L-Tryptophanase Pyridoxal phosphate tryptophanase Tryptophan indole-lyase (tryptophanase Tryptophan indole-lyase (tryptophanase quinonoid intermediate Tryptophanase Reaction Tryptophanase and Tryptophanase and tyrosine phenol-lyase Tryptophanase bacterial Tryptophanase mechanism