Cell Cycle ProteinsCheckpoint Kinase 2TelomereCell CycleDNA DamageGenes, cdcCell Cycle CheckpointsG2 PhaseProtein-Serine-Threonine KinasesDNA RepairMitosisAtaxia Telangiectasia Mutated ProteinsDNA-Binding ProteinsS PhaseSaccharomyces cerevisiae ProteinsProtein KinasesNuclear ProteinsTelomere HomeostasisSchizosaccharomyces pombe ProteinsSpindle ApparatusMad2 ProteinsSaccharomyces cerevisiaeSchizosaccharomycesRad52 DNA Repair and Recombination ProteinDNA ReplicationG2 Phase Cell Cycle CheckpointsM Phase Cell Cycle CheckpointsG1 PhaseKinetochoresMutationTumor Suppressor Protein p53Fungal ProteinsPhosphorylationRad51 RecombinaseTumor Suppressor ProteinsMolecular Sequence DataDNA Repair EnzymesDNA Breaks, Double-StrandedHydroxyureaGamma RaysRadiation, IonizingGenomic InstabilityNocodazoleRecombination, GeneticAtaxia TelangiectasiaCyclin BCdc20 ProteinsDNA, FungalCDC2 Protein KinaseAmino Acid SequenceHeLa CellsCyclin-Dependent Kinase Inhibitor p21Protein Bindingcdc25 PhosphatasesIntracellular Signaling Peptides and ProteinsCell DivisionCyclinsChromosomal InstabilityTelomere-Binding ProteinsApoptosisUltraviolet RaysTelomeraseRadiation ToleranceDNACell LineMetaphaseSignal TransductionCyclin B1DNA HelicasesCell Line, TumorSequence Homology, Amino AcidChromosome SegregationModels, BiologicalMethyl MethanesulfonateHistonesG1 Phase Cell Cycle CheckpointsMeiosisFibroblastsBase SequenceExonucleasesBRCA1 ProteinRepressor ProteinsCell NucleusChromosomal Proteins, Non-HistoneS Phase Cell Cycle CheckpointsCarrier ProteinsEndonucleasesFlow CytometryRecombinational DNA RepairRetinoblastoma ProteinRNA, Small InterferingUbiquitin-Protein Ligase ComplexesCalcium-Binding ProteinsChromosomesAnaphase-Promoting Complex-CyclosomeEndodeoxyribonucleasesCell ProliferationGenes, FungalCell SurvivalAnaphase