Ferrous CompoundsAmino AcidsSequence Homology, Amino AcidAmino Acid SequenceAmino Acid SubstitutionCloning, MolecularAmino Acids, EssentialAmino Acid Transport SystemsSequence AlignmentStructure-Activity RelationshipBase SequenceEscherichia coliMutationAmino Acid MotifsBinding SitesKineticsMolecular Sequence DataModels, MolecularMutagenesis, Site-DirectedDNA, ComplementaryAmino Acids, AromaticRecombinant ProteinsSequence Homology, Nucleic AcidProtein ConformationPeptide FragmentsAmino Acids, Branched-ChainAmino Acids, SulfurLeucineSubstrate SpecificityProtein BindingMolecular StructureChromatography, High Pressure LiquidCell LineProtein Structure, TertiaryBacterial ProteinsDNAPeptidesMolecular WeightPhylogenyRestriction MappingSequence Analysis, DNAGenes, BacterialProteinsAlanineRecombinant Fusion ProteinsRNA, MessengerElectrophoresis, Polyacrylamide GelSpecies SpecificityPlasmidsProtein Structure, SecondaryMagnetic Resonance SpectroscopyLysineAmino Acid Transport Systems, BasicConserved SequenceCarrier ProteinsIsoleucineDNA PrimersBiological TransportCattleSulfur CompoundsAmino Acids, BasicGlycineCodonStereoisomerismNitrogenTrypsinGlutamineMethionineAmino Acids, DiaminoCyanogen BromideArginineSaccharomyces cerevisiaeValineOpen Reading FramesCysteineProtein BiosynthesisPolymerase Chain ReactionAspartic AcidGenesVolatile Organic CompoundsMass SpectrometryExcitatory Amino AcidsPhenylalanineGene LibraryProlineSequence DeletionTransfectionPoint MutationLiverTranscription, GeneticMutagenesisSequence AnalysisMembrane ProteinsTryptophanDNA, BacterialHydrolysisDose-Response Relationship, DrugGene ExpressionRabbitsAmino Acid Transport System A