DNA DamageDNAMutagensDNA RepairTumor Suppressor Protein p53Comet AssayAtaxia Telangiectasia Mutated ProteinsCell Cycle ProteinsUltraviolet RaysMethyl MethanesulfonateTumor Suppressor ProteinsMutagenicity TestsDNA-Binding ProteinsProtein-Serine-Threonine KinasesApoptosisCell CycleGamma RaysCheckpoint Kinase 2DNA Breaks, Double-StrandedNuclear ProteinsGenomic InstabilityCell Line, TumorRadiation, IonizingPhosphorylationG2 PhaseOxidative StressHistonesCell LineMutationCell SurvivalSignal TransductionDNA ReplicationDeoxyguanosineProto-Oncogene Proteins c-mdm2S PhaseFibroblastsDNA AdductsDNA Repair EnzymesPoly(ADP-ribose) PolymerasesMicronuclei, Chromosome-DefectiveProtein KinasesHCT116 CellsCell Cycle CheckpointsDoxorubicinCRADD Signaling Adaptor ProteinHeLa CellsCyclin-Dependent Kinase Inhibitor p21HydroxyureaCell NucleusCell AgingCells, CulturedRadiation ToleranceMitosisStress, PhysiologicalProtein BindingMitomycinDose-Response Relationship, RadiationPoly Adenosine Diphosphate RiboseEtoposideAlkylating AgentsRNA, Small InterferingProto-Oncogene Proteins c-ablUbiquitinationIntracellular Signaling Peptides and ProteinsCarcinogensGenes, p53cdc25 PhosphatasesSaccharomyces cerevisiae ProteinsReactive Oxygen SpeciesHydrogen PeroxideReplication Protein AGene Expression RegulationAtaxia TelangiectasiaUbiquitinMolecular Sequence DataModels, BiologicalSister Chromatid ExchangeRad51 RecombinaseCell DeathTranscription FactorsTranscription, GeneticCisplatinBRCA1 ProteinDNA BreaksMethylnitronitrosoguanidineChromatinRNA InterferenceAntimutagenic AgentsDNA-Activated Protein KinaseMice, KnockoutSaccharomyces cerevisiaeTime FactorsAntineoplastic AgentsTumor Cells, CulturedBlotting, WesternChromosome AberrationsSumoylationEnzyme ActivationTransfectionCaspase 2