MutagenesisMutagenesis, Site-DirectedMutagenesis, InsertionalMolecular Sequence DataAmino Acid SequenceMutationBase SequenceBinding SitesEscherichia coliModels, MolecularAmino Acid SubstitutionPlasmidsStructure-Activity RelationshipRecombinant ProteinsSequence Homology, Amino AcidDNA Transposable ElementsProtein Structure, TertiaryCloning, MolecularBacterial ProteinsKineticsProtein BindingProtein ConformationGenes, BacterialCysteinePoint MutationSequence AlignmentProtein Structure, SecondaryCell LineDNA PrimersSubstrate SpecificityMutagensCatalysisEthylnitrosoureaAlanineTransfectionGenetic Complementation TestDNA Mutational AnalysisEscherichia coli ProteinsConserved SequenceHistidineSOS Response (Genetics)Crystallography, X-RayPhenotypeCatalytic DomainDNA, BacterialRestriction MappingRecombinant Fusion ProteinsProtein EngineeringDNASequence DeletionPromoter Regions, GeneticGenetic VectorsPolymerase Chain ReactionOligodeoxyribonucleotidesEthyl MethanesulfonateTranscription, GeneticLysineEnzyme StabilityAmino Acid MotifsAspartic AcidDirected Molecular EvolutionSaccharomyces cerevisiaeMutant ProteinsGene Expression Regulation, BacterialDNA-Binding ProteinsUltraviolet RaysCricetinaeSequence Analysis, DNATime FactorsAsparagineSingaporeCOS CellsSerineTranscription FactorsDNA RepairGene DeletionArginineDNA-Directed DNA PolymeraseRetrospective StudiesRecombination, GeneticLigandsCircular DichroismGenetic EngineeringTransformation, GeneticDimerizationCHO CellsTryptophanMembrane ProteinsCercopithecus aethiopsCodonCarrier ProteinsHydrogen-Ion ConcentrationOperonAmino AcidsElectrophoresis, Polyacrylamide GelTemperatureAllelesGlycosylationTransformation, BacterialTreatment Outcome