Cell Cycle ProteinsCheckpoint Kinase 2DNA DamageCell CycleGenes, cdcCell Cycle CheckpointsG2 PhaseProtein-Serine-Threonine KinasesDNA RepairMitosisAtaxia Telangiectasia Mutated ProteinsRad52 DNA Repair and Recombination ProteinDNA-Binding ProteinsSaccharomyces cerevisiae ProteinsS PhaseProtein KinasesNuclear ProteinsSchizosaccharomyces pombe ProteinsSaccharomyces cerevisiaeSpindle ApparatusMad2 ProteinsSchizosaccharomycesDNA ReplicationG2 Phase Cell Cycle CheckpointsM Phase Cell Cycle CheckpointsG1 PhaseKinetochoresFungal ProteinsDNA Repair EnzymesMutationPhosphorylationTumor Suppressor Protein p53Rad51 RecombinaseDNA Breaks, Double-StrandedTumor Suppressor ProteinsMolecular Sequence DataGamma RaysHydroxyureaRecombination, GeneticRadiation, IonizingDNA, FungalNocodazoleAmino Acid SequenceGenomic InstabilityCdc20 ProteinsCyclin BAtaxia TelangiectasiaCDC2 Protein KinaseUltraviolet Rayscdc25 PhosphatasesCyclin-Dependent Kinase Inhibitor p21Protein BindingIntracellular Signaling Peptides and ProteinsHeLa CellsCyclinsCell DivisionRadiation ToleranceApoptosisDNA HelicasesSignal TransductionCyclin B1Cell LineMethyl MethanesulfonateDNAMetaphaseChromosomal InstabilitySequence Homology, Amino AcidCell Line, TumorChromosome SegregationExonucleasesG1 Phase Cell Cycle CheckpointsBRCA1 ProteinModels, BiologicalMeiosisHistonesEndonucleasesBase SequenceS Phase Cell Cycle CheckpointsRepressor ProteinsFibroblastsRecombinational DNA RepairCell NucleusCarrier ProteinsGenes, FungalFlow CytometryEndodeoxyribonucleasesUbiquitin-Protein Ligase ComplexesReplication Protein ARNA, Small InterferingChromosomal Proteins, Non-HistoneRetinoblastoma ProteinCalcium-Binding ProteinsAnaphase-Promoting Complex-CyclosomeCell SurvivalCell ProliferationTumor Cells, CulturedAnaphaseMicrotubulesExodeoxyribonucleasesGene Deletion