Cell Cycle ProteinsCheckpoint Kinase 2Cell CycleDNA DamageGenes, cdcCell Cycle CheckpointsG2 PhaseProtein-Serine-Threonine KinasesDNA RepairMitosisAtaxia Telangiectasia Mutated ProteinsS PhaseDNA-Binding ProteinsSaccharomyces cerevisiae ProteinsProtein KinasesNuclear ProteinsSchizosaccharomyces pombe ProteinsSpindle ApparatusMad2 ProteinsSaccharomyces cerevisiaeRad52 DNA Repair and Recombination ProteinSchizosaccharomycesM Phase Cell Cycle CheckpointsG2 Phase Cell Cycle CheckpointsDNA ReplicationG1 PhaseKinetochoresFungal ProteinsPhosphorylationTumor Suppressor Protein p53MutationRad51 RecombinaseTumor Suppressor ProteinsMolecular Sequence DataDNA Repair EnzymesHydroxyureaDNA Breaks, Double-StrandedGamma RaysRadiation, IonizingNocodazoleIntracellular Signaling Peptides and ProteinsAmino Acid SequenceCdc20 ProteinsCyclin BAtaxia TelangiectasiaCDC2 Protein KinaseGenomic InstabilityRecombination, GeneticDNA, Fungalcdc25 PhosphatasesCyclin-Dependent Kinase Inhibitor p21HeLa CellsProtein BindingCyclinsUltraviolet RaysCell DivisionApoptosisRadiation ToleranceSignal TransductionCyclin B1MetaphaseCell LineChromosomal InstabilityDNAMethyl MethanesulfonateDNA HelicasesCell Line, TumorSequence Homology, Amino AcidChromosome SegregationG1 Phase Cell Cycle CheckpointsModels, BiologicalHistonesExonucleasesBRCA1 ProteinMeiosisS Phase Cell Cycle CheckpointsRepressor ProteinsBase SequenceFibroblastsCarrier ProteinsCell NucleusEndonucleasesFlow CytometryChromosomal Proteins, Non-HistoneRetinoblastoma ProteinUbiquitin-Protein Ligase ComplexesCalcium-Binding ProteinsRecombinational DNA RepairRNA, Small InterferingAnaphase-Promoting Complex-CyclosomeEndodeoxyribonucleasesReplication Protein AGenes, FungalAnaphaseCell ProliferationCell SurvivalTumor Cells, CulturedMicrotubulesPrometaphaseCyclin-Dependent Kinase 2