G2 PhaseCell CycleCell Cycle ProteinsGenes, cdcCheckpoint Kinase 2DNA DamageCell Cycle CheckpointsMitosisProtein-Serine-Threonine KinasesAtaxia Telangiectasia Mutated ProteinsS PhaseG2 Phase Cell Cycle CheckpointsProtein KinasesDNA RepairTumor Suppressor Protein p53G1 PhaseCell Line, TumorDNA-Binding ProteinsTumor Suppressor ProteinsHydroxyureaM Phase Cell Cycle CheckpointsSpindle ApparatusNuclear ProteinsGamma RaysDNA ReplicationAtaxia TelangiectasiaRadiation, Ionizingcdc25 PhosphatasesPhosphorylationMutationCyclin-Dependent Kinase Inhibitor p21CyclinsCell DivisionSchizosaccharomycesSaccharomyces cerevisiae ProteinsCDC2 Protein KinaseApoptosisCyclin BRadiation ToleranceSchizosaccharomyces pombe ProteinsTumor Cells, CulturedSaccharomyces cerevisiaeChromosomal InstabilityFungal ProteinsUltraviolet RaysGenomic InstabilityG1 Phase Cell Cycle CheckpointsCell LineSignal TransductionMolecular Sequence DataCyclin B1HeLa CellsS Phase Cell Cycle CheckpointsIntracellular Signaling Peptides and ProteinsFibroblastsNocodazoleRetinoblastoma ProteinFlow CytometryCell ProliferationDNA Breaks, Double-StrandedMad2 ProteinsModels, BiologicalGenes, FungalCell SurvivalGenes, p53BRCA1 ProteinCyclin-Dependent Kinase 2HistonesBase SequenceNeoplasmsCell NucleusNeoplasm ProteinsDNARNA, Small InterferingDNA, FungalCells, CulturedKinetochoresGene DeletionCyclin EAntineoplastic AgentsGene Expression Regulation, NeoplasticRepressor ProteinsDNA Repair EnzymesPhenotypeAmino Acid SequenceMimosineProtein BindingMethyl MethanesulfonateTime FactorsCyclin-Dependent KinasesCDC2-CDC28 KinasesTransfectionHCT116 CellsCyclin ABlotting, WesternCaffeineDose-Response Relationship, RadiationAphidicolinCyclin-Dependent Kinase Inhibitor p27Cyclin D1