DNA DamageDNA RepairComet AssayUltraviolet RaysAtaxia Telangiectasia Mutated ProteinsCullin ProteinsDNA-Binding ProteinsCell Cycle ProteinsTumor Suppressor Protein p53Checkpoint Kinase 2DeoxyguanosineProtein-Serine-Threonine KinasesCell CycleDNA Breaks, Double-StrandedOxidative StressTumor Suppressor ProteinsDNAGamma RaysApoptosisHistonesNuclear ProteinsMethyl MethanesulfonateGenomic InstabilityMutagensG2 PhaseDNA ReplicationMutationHeLa CellsDose-Response Relationship, RadiationPyrimidine DimersCell LineXeroderma PigmentosumCell Line, TumorPhosphorylationUbiquitin-Protein LigasesRadiation ToleranceDNA Repair EnzymesCell SurvivalXeroderma Pigmentosum Group A ProteinDNA AdductsReactive Oxygen SpeciesGenes, cdcHydrogen PeroxidePoly(ADP-ribose) PolymerasesProtein KinasesSignal TransductionDNA BreaksUbiquitinationFibroblastsS PhaseCell Cycle CheckpointsProtein BindingDNA Breaks, Single-StrandedCell NucleusRad51 RecombinaseDNA GlycosylasesCells, CulturedCell AgingChromatinSaccharomyces cerevisiae ProteinsMitosisBRCA1 ProteinRNA, Small InterferingX-RaysMicronucleus TestsSaccharomyces cerevisiaeMolecular Sequence DataModels, BiologicalHydroxyureaAntioxidantsTime FactorsDNA-Activated Protein KinaseG2 Phase Cell Cycle CheckpointsIntracellular Signaling Peptides and ProteinsRNA InterferenceUbiquitinAlkylating AgentsCyclin-Dependent Kinase Inhibitor p21Proliferating Cell Nuclear AntigenReplication Protein ACell DeathRecombinational DNA RepairProto-Oncogene Proteins c-mdm2Schizosaccharomyces pombe ProteinsSchizosaccharomycesDNA HelicasesOxidation-ReductionPoly Adenosine Diphosphate RiboseMultiprotein ComplexesBlotting, WesternSOS Response (Genetics)Recombination, GeneticDNA-Formamidopyrimidine GlycosylaseMitomycinDose-Response Relationship, DrugHCT116 CellsMicronuclei, Chromosome-DefectiveTelomereTranscription, GeneticBase Sequence