Amino AcidsSequence Homology, Amino AcidAmino Acid SequenceAmino Acid SubstitutionCloning, MolecularAmino Acid Transport SystemsAmino Acids, EssentialSequence AlignmentBase SequenceKineticsMolecular Sequence DataMutationEscherichia coliAmino Acid MotifsBinding SitesBiological TransportMutagenesis, Site-DirectedAmino Acids, DiaminoModels, MolecularProtein ConformationDNA, ComplementaryNeutral RedRecombinant ProteinsAmino Acids, AromaticSequence Homology, Nucleic AcidLeucinePeptide FragmentsAmino Acids, Branched-ChainStructure-Activity RelationshipSubstrate SpecificityMolecular WeightAmino Acids, SulfurProtein Structure, TertiaryBacterial ProteinsProtein BindingHydrogen-Ion ConcentrationDNAPeptidesUreaAmino Acids, NeutralWaterCell LinePhylogenyNeutral CeramidaseAlanineProteinsChromatography, High Pressure LiquidRestriction MappingSolutionsSequence Analysis, DNACarrier ProteinsAmino Acid Transport Systems, BasicElectrophoresis, Polyacrylamide GelRNA, MessengerProtein Structure, SecondaryGenes, BacterialRecombinant Fusion ProteinsSpecies SpecificityCattleLysinePlasmidsProlineConserved SequenceOsmosisDNA PrimersBetaineAmino Acids, BasicIsoleucineOsmolar ConcentrationGlycineCodonTrypsinGlutamineAmino Acid Transport Systems, NeutralEvolution, MolecularMembrane ProteinsArginineCell MembraneTemperatureTryptophanOsmotic PressureSaccharomyces cerevisiaeNitrogenCyanogen BromideMembrane Transport ProteinsAspartic AcidGenesSodium ChlorideRabbitsAmino Acid Transport System AOpen Reading FramesPolymerase Chain ReactionPhenylalanineValineBiological Transport, ActiveModels, BiologicalMethionineProtein BiosynthesisSequence DeletionHydrolysis