Cell CycleCell Cycle ProteinsGenes, cdcCheckpoint Kinase 2DNA DamageG2 PhaseCell Cycle CheckpointsMitosisProtein-Serine-Threonine KinasesAtaxia Telangiectasia Mutated ProteinsS PhaseMutationProtein KinasesDNA RepairHydroxyureaSpindle ApparatusG2 Phase Cell Cycle CheckpointsDNA-Binding ProteinsM Phase Cell Cycle CheckpointsNuclear ProteinsG1 PhasePoint MutationTumor Suppressor Protein p53DNA ReplicationGamma RaysSaccharomyces cerevisiae ProteinsMad2 ProteinsSchizosaccharomycesTumor Suppressor ProteinsFungal ProteinsSaccharomyces cerevisiaeMutation, MissenseSchizosaccharomyces pombe ProteinsAtaxia TelangiectasiaChromosomal Instabilitycdc25 PhosphatasesRadiation, IonizingPhosphorylationUltraviolet RaysGenes, FungalCyclinsCyclin-Dependent Kinase Inhibitor p21Molecular Sequence DataCDC2 Protein KinaseCyclin BCell DivisionIntracellular Signaling Peptides and ProteinsBase SequenceRadiation ToleranceApoptosisGenomic InstabilityCell LineG1 Phase Cell Cycle CheckpointsGene DeletionDNA, FungalSignal TransductionCell Line, TumorCyclin B1HeLa CellsS Phase Cell Cycle CheckpointsFibroblastsNocodazoleDNA Breaks, Double-StrandedGenes, p53AllelesPhenotypeRetinoblastoma ProteinRepressor ProteinsAmino Acid SequenceBRCA1 ProteinModels, BiologicalDNAAneuploidyFrameshift MutationCDC28 Protein Kinase, S cerevisiaeCyclin-Dependent Kinase 2Chromosomes, FungalHistonesFlow CytometryProtein BindingNeoplasm ProteinsTumor Cells, CulturedCell NucleusDNA PrimersCell ProliferationKinetochoresCells, CulturedDNA Repair EnzymesCell SurvivalCyclin EGene Expression Regulation, NeoplasticMethyl MethanesulfonateMimosineGerm-Line MutationCarrier ProteinsCalcium-Binding ProteinsRNA, Small InterferingCDC2-CDC28 KinasesCyclin-Dependent KinasesTranscription Factors