Amino AcidsSequence Homology, Amino AcidAmino Acid SequenceAmino Acid SubstitutionCloning, MolecularAmino Acids, EssentialLeucineIsoleucineAmino Acids, AromaticAmino Acid Transport SystemsSequence AlignmentBase SequenceMutationValineAmino Acid MotifsEscherichia coliMolecular Sequence DataBinding SitesKineticsKeto AcidsMutagenesis, Site-DirectedNeutral RedDNA, ComplementarySequence Homology, Nucleic AcidProtein Conformation3-Methyl-2-Oxobutanoate Dehydrogenase (Lipoamide)TransaminasesPeptide FragmentsModels, MolecularRecombinant ProteinsAmino Acids, Branched-ChainAmino Acids, SulfurStructure-Activity RelationshipSubstrate SpecificityMolecular WeightProtein Structure, TertiaryDNAAmino Acids, NeutralGlutaminePhenylalanineProtein BindingPeptidesProteinsNeutral CeramidaseBacterial ProteinsDietary ProteinsNitrogenCell LinePhylogenyRestriction MappingAlanineHydrogen-Ion ConcentrationRNA, MessengerElectrophoresis, Polyacrylamide GelSequence Analysis, DNAAmino Acid Transport Systems, BasicChromatography, High Pressure LiquidRecombinant Fusion ProteinsGenes, BacterialProtein Structure, SecondarySpecies SpecificityPlasmidsCarrier ProteinsLysineTryptophanConserved SequenceBiological TransportCattleAspartic AcidDNA PrimersProtein BiosynthesisAmino Acids, BasicNutritional RequirementsCodonTrypsinAmino Acids, DiaminoGlycineSwineEvolution, MolecularCyanogen BromideMaple Syrup Urine DiseaseGenesArginineAmino Acid Transport System AOpen Reading FramesAmmoniaCaseinsMethionineSaccharomyces cerevisiaeProlineNeutral GlycosphingolipidsLiverPolymerase Chain ReactionSequence DeletionSequence AnalysisGene LibraryPoint MutationExcitatory Amino AcidsCysteineMutagenesis