CodonAmino AcidsSequence Homology, Amino AcidAmino Acid SequenceCodon, TerminatorAmino Acid SubstitutionCloning, MolecularBase SequenceCodon, InitiatorMolecular Sequence DataMutationAmino Acids, EssentialEscherichia coliAmino Acid Transport SystemsSequence AlignmentCodon, NonsenseAmino Acid MotifsSequence Homology, Nucleic AcidBinding SitesMutagenesis, Site-DirectedDNA, ComplementaryProtein BiosynthesisRNA, MessengerRecombinant ProteinsAmino Acids, AromaticKineticsPeptide FragmentsDNAGenes, BacterialRestriction MappingAmino Acids, Branched-ChainProtein ConformationLeucineModels, MolecularSequence Analysis, DNAAmino Acids, SulfurBacterial ProteinsStructure-Activity RelationshipProtein Structure, TertiaryPhylogenyPlasmidsGenetic CodeMolecular WeightPeptidesProtein BindingSubstrate SpecificityCell LinePoint MutationPolymerase Chain ReactionGenesRecombinant Fusion ProteinsProteinsDNA PrimersSpecies SpecificityConserved SequenceAlanineElectrophoresis, Polyacrylamide GelEvolution, MolecularProtein Structure, SecondaryTranscription, GeneticIsoleucineLysineSaccharomyces cerevisiaeCarrier ProteinsAmino Acid Transport Systems, BasicSequence DeletionArginineChromatography, High Pressure LiquidDNA Mutational AnalysisExonsAmino Acids, BasicGlycineRNA, TransferMutagenesisCattleGlutamineValineGene LibraryDNA, BacterialMethionineTransfectionTrypsinSequence AnalysisProlineBiological TransportCyanogen BromideViral ProteinsGene ExpressionAmino Acids, DiaminoAspartic AcidOpen Reading FramesBlotting, NorthernCysteinePhenylalanineMembrane ProteinsTryptophanExcitatory Amino AcidsNitrogenAnticodonAmino Acid Transport System A