Cell CycleCell Cycle ProteinsGenes, cdcDNA DamageCheckpoint Kinase 2G2 PhaseCell Cycle CheckpointsMitosisProtein-Serine-Threonine KinasesAtaxia Telangiectasia Mutated ProteinsS PhaseMutationProtein KinasesDNA RepairG2 Phase Cell Cycle CheckpointsTumor Suppressor Protein p53HydroxyureaDNA-Binding ProteinsSpindle ApparatusApoptosisNuclear ProteinsM Phase Cell Cycle CheckpointsG1 PhasePoint MutationGamma RaysDNA ReplicationTumor Suppressor ProteinsSaccharomyces cerevisiae ProteinsMad2 ProteinsSchizosaccharomycesFungal ProteinsSaccharomyces cerevisiaeMutation, MissensePhosphorylationSchizosaccharomyces pombe ProteinsAtaxia TelangiectasiaRadiation, IonizingCyclin-Dependent Kinase Inhibitor p21cdc25 PhosphatasesCell Line, TumorChromosomal InstabilityCyclinsMolecular Sequence DataCell DivisionSignal TransductionUltraviolet RaysCell LineGenes, FungalCDC2 Protein KinaseIntracellular Signaling Peptides and ProteinsCyclin BBase SequenceRadiation ToleranceGenomic InstabilityHeLa CellsG1 Phase Cell Cycle CheckpointsCell SurvivalGene DeletionTumor Cells, CulturedFibroblastsFlow CytometryDNA, FungalCells, CulturedCell ProliferationCyclin B1Genes, p53Models, BiologicalS Phase Cell Cycle CheckpointsAmino Acid SequencePhenotypeRetinoblastoma ProteinNocodazoleRepressor ProteinsDNADNA Breaks, Double-StrandedAllelesNeoplasm ProteinsBRCA1 ProteinCaspasesCell NucleusProtein BindingApoptosis Regulatory ProteinsRNA, Small InterferingAneuploidyTransfectionBlotting, WesternGene Expression Regulation, NeoplasticDNA PrimersEnzyme ActivationCaspase 3HistonesFrameshift MutationAntineoplastic AgentsCyclin-Dependent Kinase 2Carrier ProteinsProto-Oncogene ProteinsCDC28 Protein Kinase, S cerevisiaeProto-Oncogene Proteins c-bcl-2Chromosomes, FungalTime Factors