Checkpoint Kinase 2Cell Cycle ProteinsDNA DamageCell CycleProtein-Serine-Threonine KinasesProtein KinasesGenes, cdcG2 PhaseAtaxia Telangiectasia Mutated ProteinsPhosphorylationMitosisS PhaseSignal TransductionCell Cycle Checkpointscdc25 PhosphatasesDNA ReplicationDNA RepairDNA-Binding ProteinsM Phase Cell Cycle CheckpointsSchizosaccharomyces pombe ProteinsSpindle ApparatusSaccharomyces cerevisiae ProteinsSchizosaccharomycesNuclear ProteinsTumor Suppressor ProteinsHydroxyureaCell Line, TumorMad2 ProteinsSaccharomyces cerevisiaeG2 Phase Cell Cycle CheckpointsMutationKinetochoresFungal ProteinsRad52 DNA Repair and Recombination ProteinTumor Suppressor Protein p53G1 PhaseIntracellular Signaling Peptides and ProteinsGamma RaysCDC2 Protein KinaseUltraviolet RaysDNA, FungalDNA Breaks, Double-StrandedNocodazoleRadiation, IonizingProto-Oncogene Proteins c-aktCell LineCdc20 ProteinsHeLa CellsMolecular Sequence DataS Phase Cell Cycle CheckpointsCyclin BDNA Repair EnzymesGenomic InstabilityProtein BindingChromosomal InstabilityRad51 RecombinaseGenes, FungalMethyl MethanesulfonateApoptosisRecombination, GeneticChromosome SegregationCyclin-Dependent Kinase Inhibitor p21Cell DivisionAmino Acid SequenceAtaxia TelangiectasiaRadiation ToleranceModels, BiologicalHistonesMetaphaseCyclinsCyclin B1DNA HelicasesProtein Kinase InhibitorsCalcium-Binding ProteinsRNA, Small InterferingRepressor ProteinsDNAMeiosisGene DeletionEnzyme ActivationReplication Protein AAnaphaseAurora KinasesBRCA1 ProteinCell NucleusChromosomal Proteins, Non-HistoneBase SequenceFibroblastsG1 Phase Cell Cycle CheckpointsAneuploidyUbiquitin-Protein Ligase ComplexesCyclin-Dependent KinasesAnaphase-Promoting Complex-CyclosomeCell SurvivalEndonucleasesRNA InterferenceCarrier ProteinsPhosphatidylinositol 3-KinasesFlow CytometryExonucleases