TryptophanThreonineAmino AcidsTryptophan OxygenaseSequence Homology, Amino AcidTryptophan SynthaseAmino Acid SequenceTryptophan HydroxylaseAmino Acid SubstitutionCloning, MolecularThreonine DehydrataseMolecular Sequence DataKynurenineAmino Acids, EssentialEscherichia coliMutationBinding SitesBase SequenceAmino Acid Transport SystemsMutagenesis, Site-DirectedKineticsProtein ConformationSequence AlignmentModels, MolecularAmino Acid MotifsRecombinant ProteinsProtein BindingBromosuccinimideSpectrometry, FluorescenceProtein Structure, TertiaryLeucineSubstrate SpecificityPeptide FragmentsStructure-Activity RelationshipPhosphorylationIsoleucineDNA, ComplementaryAmino Acids, AromaticSerineBacterial ProteinsSequence Homology, Nucleic AcidCell LineIndoleamine-Pyrrole 2,3,-DioxygenasePeptidesAmino Acids, Branched-ChainAlaninePhenylalanineProtein Structure, SecondaryLysineProtein-Serine-Threonine KinasesDNAAmino Acids, SulfurRecombinant Fusion ProteinsElectrophoresis, Polyacrylamide GelAnthranilate SynthaseProteinsortho-AminobenzoatesMolecular WeightRestriction MappingGenes, BacterialPhosphothreonineRNA, MessengerGlycinePlasmidsConserved SequenceCircular DichroismChromatography, High Pressure LiquidDNA PrimersPhylogenyTyrosineMethionineCarrier ProteinsCattleValineSequence Analysis, DNASpecies SpecificityPoint MutationCodonTrypsinCatalysisSaccharomyces cerevisiaeTransfectionBiological TransportGenesLiverMutagenesisAspartic AcidArginineProtein KinasesProlineCysteineProtein BiosynthesisTranscription, GeneticNitrogenMacromolecular SubstancesHydrogen-Ion ConcentrationAcrylamidePeptide MappingMembrane ProteinsSerotonin