Checkpoint Kinase 2Cell CycleCell Cycle ProteinsGenes, cdcDNA DamageProtein-Serine-Threonine KinasesProtein KinasesG2 PhaseCell Cycle CheckpointsMitosisAtaxia Telangiectasia Mutated ProteinsS PhaseM Phase Cell Cycle CheckpointsHydroxyureaSpindle ApparatusDNA RepairG2 Phase Cell Cycle CheckpointsDNA ReplicationDNA-Binding ProteinsNuclear ProteinsSaccharomyces cerevisiae ProteinsPhosphorylationSchizosaccharomycesSchizosaccharomyces pombe Proteinscdc25 PhosphatasesMutationG1 PhaseTumor Suppressor ProteinsTumor Suppressor Protein p53Saccharomyces cerevisiaeCDC2 Protein KinaseGamma RaysGenomeFungal ProteinsRadiation, IonizingIntracellular Signaling Peptides and ProteinsUltraviolet RaysS Phase Cell Cycle CheckpointsCyclin BMolecular Sequence DataGenomic InstabilityChromosomal InstabilityMad2 ProteinsApoptosisCyclin-Dependent Kinase Inhibitor p21Signal TransductionAtaxia TelangiectasiaCell Line, TumorCell DivisionNocodazoleCyclinsHeLa CellsGenes, FungalKinetochoresDNA, FungalCell LineProtein Kinase InhibitorsBase SequenceGenome, BacterialRadiation ToleranceDNA Breaks, Double-StrandedGenome, ViralModels, BiologicalPhosphatidylinositol 3-KinasesHistonesGene DeletionCyclin-Dependent KinasesAmino Acid SequenceProtein BindingMethyl MethanesulfonateG1 Phase Cell Cycle CheckpointsCyclin B1FibroblastsRNA, Small InterferingCell NucleusDNAMAP Kinase Signaling SystemCyclin-Dependent Kinase 2Flow CytometryCdc20 ProteinsCell SurvivalEnzyme ActivationBRCA1 ProteinRepressor ProteinsCell ProliferationTumor Cells, CulturedPhenotypeAneuploidyCDC2-CDC28 KinasesRetinoblastoma ProteinCDC28 Protein Kinase, S cerevisiaeChromosome SegregationProtein-Tyrosine KinasesRNA InterferenceBlotting, WesternPolyploidyCells, CulturedCaffeineNucleic Acid Synthesis InhibitorsChromosomes, Fungal