Cell Cycle ProteinsCell CycleCheckpoint Kinase 2DNA DamageGenes, cdcG2 PhaseCell Cycle CheckpointsProtein-Serine-Threonine KinasesMitosisAtaxia Telangiectasia Mutated ProteinsS PhaseDNA RepairProtein KinasesM Phase Cell Cycle CheckpointsSpindle ApparatusG2 Phase Cell Cycle CheckpointsDNA-Binding ProteinsNuclear ProteinsSaccharomyces cerevisiae ProteinsHydroxyureaDNA ReplicationG1 PhaseSchizosaccharomyces pombe ProteinsSchizosaccharomycesMad2 ProteinsTumor Suppressor Protein p53Saccharomyces cerevisiaeGamma RaysTumor Suppressor ProteinsFungal ProteinsPhosphorylationMutationKinetochoresRadiation, Ionizingcdc25 PhosphatasesAtaxia TelangiectasiaCDC2 Protein KinaseCyclin BNocodazoleCyclin-Dependent Kinase Inhibitor p21DNA Breaks, Double-StrandedUltraviolet RaysCyclinsGenomic InstabilityChromosomal InstabilityIntracellular Signaling Peptides and ProteinsCell DivisionDNA Repair EnzymesRadiation ToleranceDNA, FungalApoptosisHeLa CellsS Phase Cell Cycle CheckpointsMolecular Sequence DataCdc20 ProteinsCyclin B1Rad52 DNA Repair and Recombination ProteinRad51 RecombinaseG1 Phase Cell Cycle CheckpointsSignal TransductionCell Line, TumorCell LineGenes, FungalMetaphaseProtein BindingModels, BiologicalBRCA1 ProteinMethyl MethanesulfonateChromosome SegregationHistonesFibroblastsRecombination, GeneticDNARepressor ProteinsRetinoblastoma ProteinAmino Acid SequenceFlow CytometryCell NucleusCalcium-Binding ProteinsCyclin-Dependent Kinase 2ExonucleasesRNA, Small InterferingGene DeletionGenes, p53Tumor Cells, CulturedCell SurvivalCell ProliferationBase SequenceChromosomal Proteins, Non-HistoneUbiquitin-Protein Ligase ComplexesAnaphaseDNA HelicasesAnaphase-Promoting Complex-CyclosomeCarrier ProteinsCentrosomeAneuploidyCyclin EMeiosisPhenotypeMicrotubules