Cell Cycle ProteinsCell CycleCheckpoint Kinase 2DNA DamageCell Cycle CheckpointsGenes, cdcG2 PhaseProtein-Serine-Threonine KinasesAtaxia Telangiectasia Mutated ProteinsMitosisS PhaseDNA RepairProtein KinasesG2 Phase Cell Cycle CheckpointsDNA-Binding ProteinsG1 PhaseNuclear ProteinsM Phase Cell Cycle CheckpointsSpindle ApparatusTumor Suppressor Protein p53Saccharomyces cerevisiae ProteinsDNA ReplicationTumor Suppressor ProteinsSchizosaccharomyces pombe ProteinsPhosphorylationSchizosaccharomycesGamma RaysHydroxyureaRadiation, IonizingSaccharomyces cerevisiaeAtaxia Telangiectasiacdc25 PhosphatasesKinetochoresMutationCyclin-Dependent Kinase Inhibitor p21CDC2 Protein KinaseCyclin BCyclinsDNA Breaks, Double-StrandedGenomic InstabilityFungal ProteinsNocodazoleMad2 ProteinsDNA Repair EnzymesCell DivisionRadiation ToleranceApoptosisRad52 DNA Repair and Recombination ProteinRad51 RecombinaseUltraviolet RaysHeLa CellsCyclin B1G1 Phase Cell Cycle CheckpointsMolecular Sequence DataSignal TransductionCell Line, TumorChromosomal InstabilityIntracellular Signaling Peptides and ProteinsCell LineCdc20 ProteinsS Phase Cell Cycle CheckpointsProtein BindingBRCA1 ProteinDNA, FungalFibroblastsModels, BiologicalRecombination, GeneticRetinoblastoma ProteinHistonesDNAMetaphaseMethyl MethanesulfonateFlow CytometryAmino Acid SequenceCyclin-Dependent Kinase 2Cell NucleusChromosome SegregationExonucleasesGenes, p53Cell ProliferationTumor Cells, CulturedRNA, Small InterferingCell SurvivalDNA HelicasesRepressor ProteinsCyclin ECarrier ProteinsChromosomal Proteins, Non-HistoneMimosineCentrosomeCells, CulturedUbiquitin-Protein Ligase ComplexesCDC2-CDC28 KinasesAnaphase-Promoting Complex-CyclosomeCyclin-Dependent KinasesEndonucleasesCaffeineHCT116 CellsReplication Protein AMeiosis