Amino AcidsSequence Homology, Amino AcidAmino Acid SequenceAmino Acid SubstitutionCloning, MolecularAmino Acids, EssentialMolecular Sequence DataBase SequenceSequence AlignmentAmino Acid Transport SystemsMutationAmino Acid MotifsBinding SitesEscherichia coliModels, BiologicalModels, MolecularKineticsMutagenesis, Site-DirectedRecombinant ProteinsStructure-Activity RelationshipDNA, ComplementaryProtein ConformationPeptide FragmentsProtein BindingSequence Homology, Nucleic AcidProtein Structure, TertiaryDNAPeptidesCell LineAmino Acids, AromaticAmino Acids, Branched-ChainLeucineProteinsAmino Acids, SulfurSubstrate SpecificityMolecular WeightBacterial ProteinsPhylogenyRNA, MessengerSequence Analysis, DNARecombinant Fusion ProteinsRestriction MappingElectrophoresis, Polyacrylamide GelChromatography, High Pressure LiquidSpecies SpecificityProtein Structure, SecondaryPlasmidsConserved SequenceAlanineGenes, BacterialCattleBiological TransportDNA PrimersLysineCarrier ProteinsAmino Acid Transport Systems, BasicTranscription, GeneticIsoleucinePolymerase Chain ReactionSaccharomyces cerevisiaeAmino Acids, BasicTrypsinCodonTransfectionGenesGene ExpressionProtein BiosynthesisBiological AssayGene LibraryOpen Reading FramesBiological ProductsAmino Acids, DiaminoArginineMembrane ProteinsGlycineCyanogen BromideSequence AnalysisSequence DeletionEvolution, MolecularMutagenesisCells, CulturedGlutamineMethionineNitrogenPoint MutationMolecular StructureCysteineDNA-Binding ProteinsValineProlineSequence Analysis, ProteinAspartic AcidTranscription FactorsRabbitsMacromolecular SubstancesComputational BiologyPhenylalanineCell MembraneSignal TransductionExcitatory Amino Acids