Amino AcidsAmino Acid SequenceSequence Homology, Amino AcidMolecular Sequence DataAmino Acid SubstitutionMutagenesis, Site-DirectedModels, MolecularProtein ConformationSequence AlignmentProtein Structure, SecondaryConserved SequenceMutationBinding SitesProtein BindingBase SequenceStructure-Activity RelationshipCloning, MolecularProtein Structure, TertiaryKineticsAmino Acids, EssentialAmino Acid Transport SystemsAmino Acid MotifsEscherichia coliDNA, ComplementaryAmino Acids, AromaticSequence Homology, Nucleic AcidAmino Acids, Branched-ChainPeptide FragmentsAmino Acids, SulfurRecombinant ProteinsLeucineSubstrate SpecificityDNAMolecular WeightPeptidesBacterial ProteinsRestriction MappingCell LinePhylogenyAlanineRecombinant Fusion ProteinsSequence Analysis, DNAGenes, BacterialProteinsElectrophoresis, Polyacrylamide GelRNA, MessengerAmino Acid Transport Systems, BasicPlasmidsIsoleucineAmino Acids, BasicLysineSpecies SpecificityChromatography, High Pressure LiquidDNA PrimersCarrier ProteinsCodonCyanogen BromideTrypsinGlycineCattleBiological TransportAmino Acids, DiaminoGlutamineOpen Reading FramesGenesValineProtein BiosynthesisExcitatory Amino AcidsMethionineArginineAspartic AcidGene LibrarySaccharomyces cerevisiaeSequence DeletionSequence AnalysisPolymerase Chain ReactionNitrogenProlinePhenylalaninePoint MutationMutagenesisAmino Acid Transport System AAmino Acids, NeutralCysteineTryptophanTransfectionTranscription, GeneticMembrane ProteinsDNA, BacterialBlotting, NorthernMacromolecular SubstancesEvolution, MolecularSequence Analysis, ProteinViral ProteinsGene ExpressionPlant ProteinsThreonineReceptors, Amino AcidRabbitsEpitopes