Checkpoint Kinase 2Cell Cycle ProteinsDNA DamageCell CycleGenes, cdcProtein-Serine-Threonine KinasesProtein KinasesG2 PhaseMitosisCell Cycle CheckpointsAtaxia Telangiectasia Mutated ProteinsM Phase Cell Cycle CheckpointsS PhaseSpindle ApparatusDNA RepairSaccharomyces cerevisiae ProteinsSchizosaccharomyces pombe ProteinsDNA-Binding ProteinsSchizosaccharomycesNuclear ProteinsHydroxyureaDNA ReplicationMad2 ProteinsG2 Phase Cell Cycle CheckpointsSaccharomyces cerevisiaeKinetochoresPhosphorylationMutationFungal ProteinsG1 Phasecdc25 PhosphatasesTumor Suppressor ProteinsIntracellular Signaling Peptides and ProteinsCDC2 Protein KinaseTumor Suppressor Protein p53Gamma RaysNocodazoleDNA, FungalDNA Breaks, Double-StrandedRadiation, IonizingCdc20 ProteinsUltraviolet RaysS Phase Cell Cycle CheckpointsRad52 DNA Repair and Recombination ProteinCyclin BHeLa CellsGenomic InstabilityMolecular Sequence DataRad51 RecombinaseChromosomal InstabilitySignal TransductionDNA Repair EnzymesProtein BindingChromosome SegregationApoptosisGenes, FungalCyclin-Dependent Kinase Inhibitor p21Cell Line, TumorCell DivisionMethyl MethanesulfonateAtaxia TelangiectasiaCell LineRecombination, GeneticMetaphaseCyclinsModels, BiologicalRadiation ToleranceCyclin B1Calcium-Binding ProteinsHistonesAmino Acid SequenceProtein Kinase InhibitorsRepressor ProteinsRNA, Small InterferingDNA HelicasesDNAMeiosisGene DeletionAnaphaseAurora KinasesChromosomal Proteins, Non-HistoneG1 Phase Cell Cycle CheckpointsAneuploidyUbiquitin-Protein Ligase ComplexesFibroblastsCell NucleusAnaphase-Promoting Complex-CyclosomeBRCA1 ProteinCyclin-Dependent KinasesBase SequenceReplication Protein APhosphatidylinositol 3-KinasesCell SurvivalCarrier ProteinsFlow CytometryEnzyme ActivationRNA InterferenceEndonucleasesExonucleasesCyclin-Dependent Kinase 2