Cell CycleCell Cycle ProteinsGenes, cdcCheckpoint Kinase 2DNA DamageG2 PhaseMitosisProtein-Serine-Threonine KinasesCell Cycle CheckpointsMad2 ProteinsProtein KinasesSpindle ApparatusM Phase Cell Cycle CheckpointsAtaxia Telangiectasia Mutated ProteinsS PhaseDNA RepairNuclear ProteinsHydroxyureaSaccharomyces cerevisiae ProteinsG2 Phase Cell Cycle CheckpointsDNA-Binding ProteinsKinetochoresSchizosaccharomyces pombe ProteinsDNA ReplicationSchizosaccharomycesG1 PhaseFungal ProteinsSaccharomyces cerevisiaeMutationPhosphorylationTumor Suppressor Protein p53Gamma RaysTumor Suppressor ProteinsNocodazoleCdc20 ProteinsChromosomal InstabilityMolecular Sequence DataRadiation, IonizingUltraviolet RaysCyclin BIntracellular Signaling Peptides and ProteinsCDC2 Protein Kinasecdc25 PhosphatasesSignal TransductionGenomic InstabilityAtaxia TelangiectasiaHeLa CellsCyclin-Dependent Kinase Inhibitor p21Genes, FungalS Phase Cell Cycle CheckpointsDNA, FungalCyclinsApoptosisProtein BindingChromosome SegregationCell DivisionMetaphaseCyclin B1Calcium-Binding ProteinsModels, BiologicalDNA Breaks, Double-StrandedCell LineRepressor ProteinsAmino Acid SequenceRadiation ToleranceCell Line, TumorAneuploidyG1 Phase Cell Cycle CheckpointsBase SequenceCarrier ProteinsMethyl MethanesulfonateHistonesUbiquitin-Protein Ligase ComplexesGene DeletionAnaphase-Promoting Complex-CyclosomeAnaphaseBRCA1 ProteinFibroblastsChromosomal Proteins, Non-HistoneProtein Structure, TertiaryRNA, Small InterferingFlow CytometryCell NucleusSequence Homology, Amino AcidRetinoblastoma ProteinMicrotubulesDNAPrometaphaseCells, CulturedPhenotypeCell SurvivalAurora KinasesCDC28 Protein Kinase, S cerevisiaeCentrosomeChromosomes, FungalCyclin-Dependent Kinase 2Cell ProliferationTumor Cells, CulturedNeoplasm ProteinsRecombinant Fusion Proteins