Cell Cycle ProteinsCheckpoint Kinase 2DNA DamageCell CycleGenes, cdcProtein-Serine-Threonine KinasesMitosisG2 PhaseCell Cycle CheckpointsDNA RepairProtein KinasesAtaxia Telangiectasia Mutated ProteinsMad2 ProteinsSpindle ApparatusM Phase Cell Cycle CheckpointsSaccharomyces cerevisiae ProteinsS PhaseDNA-Binding ProteinsSchizosaccharomyces pombe ProteinsNuclear ProteinsSchizosaccharomycesRad52 DNA Repair and Recombination ProteinSaccharomyces cerevisiaeDNA ReplicationHydroxyureaFungal ProteinsG2 Phase Cell Cycle CheckpointsKinetochoresMutationG1 PhaseGamma RaysPhosphorylationTumor Suppressor Protein p53DNA, FungalDNA Repair EnzymesDNA Breaks, Double-StrandedTumor Suppressor ProteinsUltraviolet RaysIntracellular Signaling Peptides and ProteinsNocodazoleRadiation, IonizingChromosomal InstabilityRad51 RecombinaseCdc20 ProteinsGenomic InstabilityGenes, FungalCyclin BCDC2 Protein KinaseMolecular Sequence Datacdc25 PhosphatasesRecombination, GeneticAtaxia TelangiectasiaHeLa CellsCyclin-Dependent Kinase Inhibitor p21S Phase Cell Cycle CheckpointsProtein BindingChromosome SegregationApoptosisMethyl MethanesulfonateRadiation ToleranceCyclinsCell DivisionMetaphaseCyclin B1Calcium-Binding ProteinsSignal TransductionDNA HelicasesRepressor ProteinsCell LineCell Line, TumorDNAAmino Acid SequenceAneuploidyG1 Phase Cell Cycle CheckpointsHistonesModels, BiologicalGene DeletionBRCA1 ProteinMeiosisExonucleasesUbiquitin-Protein Ligase ComplexesAnaphaseBase SequenceAnaphase-Promoting Complex-CyclosomeEndonucleasesFibroblastsChromosomes, FungalRecombinational DNA RepairChromosomal Proteins, Non-HistoneCell NucleusReplication Protein ARNA, Small InterferingFlow CytometryCarrier ProteinsCell SurvivalPhenotypeEndodeoxyribonucleasesMicrotubulesRetinoblastoma ProteinPrometaphase