DNA Modification MethylasesDNA-Cytosine MethylasesDNA Repair5-MethylcytosineMethylationtRNA MethyltransferasesDNACytosineDNA DamageMethyltransferasesDeoxyribonucleases, Type II Site-SpecificSite-Specific DNA-Methyltransferase (Adenine-Specific)Base SequenceDNA (Cytosine-5-)-MethyltransferaseDNA Restriction EnzymesEscherichia coliMolecular Sequence DataDNA AdductsDeoxyguanosineDNA MethylationDNA End-Joining RepairDNA Repair EnzymesSubstrate SpecificityDNA, BacterialGuanineHistonesPlasmidsDNA-Binding ProteinsDNA Breaks, Double-StrandedUltraviolet RaysEpigenesis, GeneticMutationDNA Restriction-Modification EnzymesHistone-Lysine N-MethyltransferaseRNA, TransferOligonucleotidesDNA ReplicationAminoglycosidesCell LineAdenineAmino Acid SequenceDNA Breaks, Single-StrandedGamma RaysAntigens, NuclearS-AdenosylmethionineRecombination, GeneticDNA LigasesPyrimidine DimersDeoxyribodipyrimidine Photo-LyaseNucleic Acid ConformationMethyl MethanesulfonateCarcinogensDNA HelicasesChromatography, High Pressure LiquidCloning, MolecularDNA Polymerase betaRad51 RecombinaseRadiation ToleranceEndodeoxyribonucleasesKineticsBinding SitesTranscription, GeneticRadiation, IonizingProtein Processing, Post-TranslationalGenes, BacterialMutagensDose-Response Relationship, RadiationDNA, ViralRestriction MappingDNA Mismatch RepairDNA-Activated Protein KinasePromoter Regions, GeneticNuclear ProteinsSaccharomyces cerevisiaeHeLa CellsFibroblastsCell CycleEscherichia coli ProteinsCells, CulturedCell Survival