MutagenesisMutagenesis, Site-DirectedMutagenesis, InsertionalMolecular Sequence DataAmino Acid SequenceMutationBase SequenceBinding SitesModels, MolecularEscherichia coliAmino Acid SubstitutionStructure-Activity RelationshipRecombinant ProteinsSequence Homology, Amino AcidPlasmidsDNA Transposable ElementsProtein Structure, TertiaryCloning, MolecularKineticsBacterial ProteinsProtein BindingProtein ConformationCysteineSequence AlignmentProtein Structure, SecondaryGenes, BacterialPoint MutationMutagensEthylnitrosoureaSubstrate SpecificityCatalysisDNA PrimersCell LineAlanineSOS Response (Genetics)Conserved SequenceHistidineDNA Mutational AnalysisEscherichia coli ProteinsCatalytic DomainCrystallography, X-RayGenetic Complementation TestTransfectionRestriction MappingEthyl MethanesulfonateDNA, BacterialRecombinant Fusion ProteinsPhenotypeSequence DeletionDNAProtein EngineeringOligodeoxyribonucleotidesLysineAspartic AcidDirected Molecular EvolutionAmino Acid MotifsPromoter Regions, GeneticEnzyme StabilityMutant ProteinsTranscription, GeneticSaccharomyces cerevisiaeLocal Lymph Node AssayCricetinaeAsparagineGene Expression Regulation, BacterialDNA-Binding ProteinsGenetic VectorsPolymerase Chain ReactionCOS CellsSerineDNA RepairDNA-Directed DNA PolymeraseSequence Analysis, DNAArginineTranscription FactorsCircular DichroismDimerizationLigandsGene DeletionTryptophanCHO CellsHydrogen-Ion ConcentrationCercopithecus aethiopsElectrophoresis, Polyacrylamide GelMembrane ProteinsAmino AcidsCodonMutagenicity TestsRecombination, GeneticDNA ReplicationCarrier ProteinsOperonGlycosylationGene LibraryTemperatureDNA DamageHydrolysisAllelesCell MembraneChromosome Mapping