Cell Cycle ProteinsCheckpoint Kinase 2Cell CycleDNA DamageGenes, cdcCell Cycle CheckpointsG2 PhaseProtein-Serine-Threonine KinasesMitosisAtaxia Telangiectasia Mutated ProteinsDNA RepairS PhaseDNA-Binding ProteinsProtein KinasesSaccharomyces cerevisiae ProteinsNuclear ProteinsSpindle ApparatusMad2 ProteinsSchizosaccharomyces pombe ProteinsM Phase Cell Cycle CheckpointsRad52 DNA Repair and Recombination ProteinG2 Phase Cell Cycle CheckpointsSchizosaccharomycesG1 PhaseDNA ReplicationKinetochoresSaccharomyces cerevisiaeTumor Suppressor Protein p53PhosphorylationRad51 RecombinaseTumor Suppressor ProteinsDNA Repair EnzymesFungal ProteinsHydroxyureaMutationDNA Breaks, Double-StrandedGamma RaysRadiation, IonizingNocodazoleCdc20 ProteinsCyclin BAtaxia TelangiectasiaCDC2 Protein KinaseGenomic InstabilityCyclin-Dependent Kinase Inhibitor p21cdc25 PhosphatasesRecombination, GeneticCyclinsIntracellular Signaling Peptides and ProteinsHeLa CellsDNA, FungalUltraviolet RaysMolecular Sequence DataCell DivisionApoptosisProtein BindingRadiation ToleranceCyclin B1MetaphaseChromosomal InstabilitySignal TransductionChromosome SegregationCell LineCell Line, TumorG1 Phase Cell Cycle CheckpointsDNA HelicasesDNAAmino Acid SequenceMethyl MethanesulfonateBRCA1 ProteinExonucleasesHistonesModels, BiologicalS Phase Cell Cycle CheckpointsFibroblastsMeiosisEndonucleasesRepressor ProteinsRetinoblastoma ProteinFlow CytometryRecombinational DNA RepairCell NucleusUbiquitin-Protein Ligase ComplexesAnaphase-Promoting Complex-CyclosomeChromosomal Proteins, Non-HistoneCalcium-Binding ProteinsRNA, Small InterferingCarrier ProteinsCell SurvivalPrometaphaseCyclin-Dependent Kinase 2Cell ProliferationAnaphaseMicrotubulesTumor Cells, CulturedReplication Protein ACentrosomeGenes, p53EndodeoxyribonucleasesChromatin