Mice, KnockoutClavulanic AcidPhenotypeMultigene FamilyAmino AcidsMolecular Sequence DataSequence Homology, Amino AcidAmino Acid SequenceAmino Acid SubstitutionCloning, MolecularAmino Acids, EssentialAmino Acid Transport SystemsGene Knockout TechniquesSequence AlignmentBase SequenceMutationAmino Acid MotifsEscherichia coliBinding SitesMutagenesis, Site-DirectedDNA, ComplementaryAmino Acids, AromaticSequence Homology, Nucleic AcidPeptide FragmentsRecombinant ProteinsKineticsAmino Acids, Branched-ChainAmino Acids, SulfurProtein ConformationLeucineModels, MolecularProtein Structure, TertiaryProtein BindingStructure-Activity RelationshipBacterial ProteinsRNA, MessengerCell LineDNASubstrate SpecificityPeptidesMice, Inbred C57BLMolecular WeightRestriction MappingProteinsRecombinant Fusion ProteinsPhylogenySequence Analysis, DNAGenes, BacterialAlanineDNA PrimersCarrier ProteinsElectrophoresis, Polyacrylamide GelPlasmidsAmino Acid Transport Systems, BasicConserved SequenceProtein Structure, SecondarySpecies SpecificityLysineChromatography, High Pressure LiquidIsoleucineAmino Acids, BasicBiological TransportMembrane ProteinsCodonGlycinePolymerase Chain ReactionCattleTrypsinCyanogen BromideOpen Reading FramesGlutamineGene ExpressionSequence DeletionProtein BiosynthesisLiverArginineValineAmino Acids, DiaminoGenesSaccharomyces cerevisiaeMutagenesisGene DeletionTransfectionMethionineTranscription, GeneticGene LibraryAspartic AcidExcitatory Amino AcidsCells, CulturedNitrogenPoint MutationSequence AnalysisProlinePhenylalanineAmino Acid Transport System ABlotting, NorthernCysteineAmino Acids, NeutralDNA-Binding ProteinsTryptophan