Amino Acids, BasicAmino AcidsSequence Homology, Amino AcidAmino Acid SequenceAmino Acid SubstitutionMolecular Sequence DataCloning, MolecularAmino Acid Transport Systems, BasicAmino Acids, DiaminoBase SequenceAmino Acid Transport SystemsKineticsBinding SitesMutationMutagenesis, Site-DirectedAmino Acids, EssentialSequence AlignmentBiological TransportAmino Acid MotifsEscherichia coliLysinePeptide FragmentsRecombinant ProteinsSubstrate SpecificityProtein BindingPeptidesArginineDNA, ComplementaryStructure-Activity RelationshipCell LineProtein Structure, TertiaryModels, MolecularProtein ConformationSequence Homology, Nucleic AcidDNALeucineMolecular WeightAmino Acid Transport Systems, NeutralCarrier ProteinsBacterial ProteinsRecombinant Fusion ProteinsAmino Acids, AromaticElectrophoresis, Polyacrylamide GelHydrogen-Ion ConcentrationAlaninePlasmidsAmino Acids, SulfurChromatography, High Pressure LiquidRNA, MessengerProtein Structure, SecondaryRestriction MappingCattlePhylogenyProtein PrecursorsProteinsDNA PrimersConserved SequenceSequence Analysis, DNASpecies SpecificityNeutral RedCell MembraneGenes, BacterialAmino Acids, NeutralTransfectionProlineSaccharomyces cerevisiaeMembrane ProteinsBiological Transport, ActiveProtein Processing, Post-TranslationalAmino Acids, Branched-ChainMutagenesisGlutamineTrypsinHydrolysisEndopeptidasesPoint MutationSequence DeletionRabbitsNuclear Localization SignalsProtein BiosynthesisCodonCells, CulturedTranscription, GeneticGenesCOS CellsIsoleucineSubtilisinsCyanogen BromidePolymerase Chain ReactionViral ProteinsChromatography, GelDNA-Binding ProteinsCricetinaeGene ExpressionGlycineSwineCysteineLiverTryptophanGene Library