Cell CycleCell Cycle ProteinsDNA DamageGenes, cdcCheckpoint Kinase 2G2 PhaseCell Cycle CheckpointsMitosisProtein-Serine-Threonine KinasesAtaxia Telangiectasia Mutated ProteinsDNA RepairS PhaseProtein KinasesG2 Phase Cell Cycle CheckpointsHydroxyureaDNA-Binding ProteinsSpindle ApparatusM Phase Cell Cycle CheckpointsNuclear ProteinsG1 PhaseGamma RaysDNA ReplicationSaccharomyces cerevisiae ProteinsTumor Suppressor Protein p53SchizosaccharomycesFungal ProteinsSaccharomyces cerevisiaeSchizosaccharomyces pombe ProteinsMutationMad2 ProteinsTumor Suppressor ProteinsUltraviolet RaysRadiation, IonizingAtaxia TelangiectasiaChromosomal Instabilitycdc25 PhosphatasesPhosphorylationGenes, FungalCyclinsCyclin-Dependent Kinase Inhibitor p21CDC2 Protein KinaseCyclin BRadiation ToleranceIntracellular Signaling Peptides and ProteinsGenomic InstabilityRad52 DNA Repair and Recombination ProteinApoptosisDNA, FungalCell DivisionMolecular Sequence DataDNA Breaks, Double-StrandedG1 Phase Cell Cycle CheckpointsCell LineCell Line, TumorDNA Repair EnzymesSignal TransductionCyclin B1S Phase Cell Cycle CheckpointsHeLa CellsNocodazoleGene DeletionFibroblastsBase SequenceRetinoblastoma ProteinBRCA1 ProteinMethyl MethanesulfonateModels, BiologicalChromosomes, FungalAneuploidyHistonesDNAFlow CytometryRepressor ProteinsCDC28 Protein Kinase, S cerevisiaeCyclin-Dependent Kinase 2Cell NucleusGenes, p53PhenotypeCell SurvivalCell ProliferationTumor Cells, CulturedKinetochoresNeoplasm ProteinsProtein BindingAmino Acid SequenceDose-Response Relationship, RadiationCells, CulturedCyclin ERecombination, GeneticMimosineRNA, Small InterferingAllelesGene Expression Regulation, NeoplasticCDC2-CDC28 KinasesCyclin-Dependent KinasesCaffeineNucleic Acid Synthesis InhibitorsCalcium-Binding ProteinsTime FactorsAphidicolin