Cell CycleCell Cycle ProteinsCheckpoint Kinase 2Cell Cycle CheckpointsDNA DamageG2 PhaseProtein-Serine-Threonine KinasesGenes, cdcAtaxia Telangiectasia Mutated ProteinsProtein KinasesMitosisS PhaseG2 Phase Cell Cycle CheckpointsG1 PhaseDNA RepairTumor Suppressor Protein p53Tumor Suppressor ProteinsCDC2 Protein KinaseDNA-Binding ProteinsPhosphorylationNuclear ProteinsM Phase Cell Cycle CheckpointsAtaxia TelangiectasiaGamma RaysCyclin-Dependent Kinase Inhibitor p21DNA ReplicationCyclinsRadiation, Ionizingcdc25 PhosphatasesHydroxyureaSpindle ApparatusCyclin BApoptosisCell DivisionMutationPhosphatidylinositol 3-KinasesSignal TransductionRadiation ToleranceCell Line, TumorCell LineGenomic InstabilitySaccharomyces cerevisiae ProteinsMAP Kinase Signaling SystemG1 Phase Cell Cycle CheckpointsProtein Kinase InhibitorsSchizosaccharomycesHeLa CellsCyclin-Dependent KinasesCyclin B1Saccharomyces cerevisiaeUltraviolet RaysCyclin-Dependent Kinase 2FibroblastsMolecular Sequence DataS Phase Cell Cycle CheckpointsSchizosaccharomyces pombe ProteinsNocodazoleCDC2-CDC28 KinasesModels, BiologicalRetinoblastoma ProteinDNA Breaks, Double-StrandedIntracellular Signaling Peptides and ProteinsTumor Cells, CulturedChromosomal InstabilityProtein BindingFlow CytometryFungal ProteinsCell ProliferationCell NucleusBRCA1 ProteinHistonesAmino Acid SequenceDNACells, CulturedCalcium-Calmodulin-Dependent Protein KinasesCell SurvivalRNA, Small InterferingProtein-Tyrosine KinasesGenes, p53KinetochoresTransfectionCyclin EBlotting, WesternBase SequenceProto-Oncogene ProteinsCyclin-Dependent Kinase Inhibitor p27src-Family KinasesEnzyme ActivationMimosineTime FactorsMethyl MethanesulfonateDNA Repair EnzymesCarrier ProteinsCyclin AAurora KinasesEnzyme InhibitorsCaffeineAntineoplastic AgentsCyclin-Dependent Kinase 4p38 Mitogen-Activated Protein Kinases