DNA DamageCell CycleCell Cycle ProteinsGenes, cdcCheckpoint Kinase 2G2 PhaseCell Cycle CheckpointsMitosisProtein-Serine-Threonine KinasesAtaxia Telangiectasia Mutated ProteinsDNA RepairS PhaseProtein KinasesHydroxyureaG2 Phase Cell Cycle CheckpointsDNA-Binding ProteinsTumor Suppressor Protein p53Spindle ApparatusNuclear ProteinsGamma RaysM Phase Cell Cycle CheckpointsDNA ReplicationG1 PhaseTumor Suppressor ProteinsUltraviolet RaysSaccharomyces cerevisiae ProteinsMutationSchizosaccharomycesMad2 ProteinsSchizosaccharomyces pombe ProteinsFungal ProteinsSaccharomyces cerevisiaePhosphorylationAtaxia Telangiectasiacdc25 PhosphatasesRadiation, IonizingChromosomal InstabilityApoptosisCyclin-Dependent Kinase Inhibitor p21Genomic InstabilityRadiation ToleranceCyclinsCDC2 Protein KinaseDNA Breaks, Double-StrandedCyclin BGenes, FungalComet AssayIntracellular Signaling Peptides and ProteinsCell DivisionCell Line, TumorCell LineMolecular Sequence DataSignal TransductionHeLa CellsDNA, FungalG1 Phase Cell Cycle CheckpointsHistonesFibroblastsS Phase Cell Cycle CheckpointsDNAMethyl MethanesulfonateBRCA1 ProteinCyclin B1NocodazoleGene DeletionModels, BiologicalBase SequenceCell SurvivalRetinoblastoma ProteinDNA Repair EnzymesFlow CytometryCell NucleusRepressor ProteinsGenes, p53AneuploidyMutagensCells, CulturedDose-Response Relationship, RadiationCell ProliferationCyclin-Dependent Kinase 2Tumor Cells, CulturedChromosomes, FungalCDC28 Protein Kinase, S cerevisiaePhenotypeRNA, Small InterferingProtein BindingNeoplasm ProteinsTime FactorsKinetochoresNucleic Acid Synthesis InhibitorsAmino Acid SequenceCyclin EGene Expression Regulation, NeoplasticHCT116 CellsChromatinCaffeineMimosineCyclin-Dependent KinasesCDC2-CDC28 KinasesAphidicolin