Amino AcidsAmino Acid SequenceSequence Homology, Amino AcidMolecular Sequence DataCloning, MolecularAmino Acid SubstitutionHydrophobic and Hydrophilic InteractionsBinding SitesBase SequenceMutagenesis, Site-DirectedStructure-Activity RelationshipModels, MolecularProtein BindingProtein ConformationKineticsEscherichia coliSubstrate SpecificitySequence AlignmentMutationProtein Structure, TertiaryLeucineProtein Structure, SecondaryPeptidesAmino Acid MotifsAmino Acids, NeutralRecombinant ProteinsMolecular WeightPeptide FragmentsAmino Acids, EssentialIsoleucineBacterial ProteinsCell LineAmino Acid Transport SystemsSequence Homology, Nucleic AcidElectrophoresis, Polyacrylamide GelRecombinant Fusion ProteinsDNADNA, ComplementaryPhenylalanineMembrane ProteinsAlanineProteinsCell MembraneChromatography, AffinityProtein Sorting SignalsChromatography, High Pressure LiquidRestriction MappingCarrier ProteinsConserved SequenceCattlePoint MutationBiological TransportHydrogen-Ion ConcentrationMutagenesisSolubilityEndopeptidasesCircular DichroismGlutamineGenes, BacterialHydrolysisPlasmidsDNA PrimersOligopeptidesCodonPhylogenyProtein FoldingAmino Acids, AromaticCOS CellsRNA, MessengerTransfectionTryptophanSpecies SpecificityValineAmino Acids, Branched-ChainSequence DeletionAmino Acids, SulfurSaccharomyces cerevisiaeGenesTrypsinConsensus SequenceTemperatureMacromolecular SubstancesDNA Mutational AnalysisProtein BiosynthesisArginineOpen Reading FramesViral ProteinsGlycoproteinsProtein Processing, Post-TranslationalGene LibraryCricetinaePolymerase Chain ReactionChromatography, GelDNA-Binding ProteinsEnzyme StabilityCatalysisTranscription, GeneticCarboxypeptidasesDipeptidesDNA, Bacterial