TryptophanKynurenineIndoleamine-Pyrrole 2,3,-DioxygenaseAspartic AcidAmino AcidsAmino Acid SequenceAspartic Acid ProteasesSequence Homology, Amino AcidTryptophan OxygenaseAspartic Acid EndopeptidasesTryptophan SynthaseMolecular Sequence DataAmino Acid SubstitutionTryptophan HydroxylaseMutagenesis, Site-DirectedCloning, MolecularBinding SitesMutationBase SequenceEscherichia coliProtein ConformationKineticsModels, MolecularSequence AlignmentRecombinant ProteinsStructure-Activity RelationshipAsparagineSubstrate SpecificityAmino Acids, EssentialProtein BindingAmino Acid Transport SystemsPeptide FragmentsProtein Structure, TertiaryPeptidesAmino Acid MotifsAlanineProtein Structure, SecondarySpectrometry, FluorescenceBacterial ProteinsGlycineDNA, ComplementaryMolecular WeightBromosuccinimidePepstatinsHistidineHydrogen-Ion ConcentrationLeucineSequence Homology, Nucleic AcidPoint MutationCell LineElectrophoresis, Polyacrylamide GelCatalysisSerineLysineConserved SequencePhenylalanineChromatography, High Pressure LiquidAmino Acids, AromaticPlasmidsGlutamatesDNACircular DichroismTrypsinRecombinant Fusion ProteinsPepsin ADNA PrimersRestriction MappingProteinsEndopeptidases