part of L-tryptophan catabolic process tryptophanase activity https://github.com/geneontology/go-ontology/issues/28526 https://github.com/geneontology/go-ontology/issues/31587 Catalysis of the reaction: L-tryptophan + H2O = indole + NH4 + pyruvate. KEGG_REACTION:R00673 EC:4.1.99.1 MetaCyc:TRYPTOPHAN-RXN TNase activity RHEA:19553 L-tryptophan indole-lyase activity tryptophan catabolism, using tryptophanase GO:0009034 tryptophan catabolic process, using tryptophanase L-tryptophan indole-lyase (deaminating) activity L-tryptophan indole-lyase (deaminating; pyruvate forming) activity L-tryptophanase activity molecular_function carbon-carbon lyase activity