Checkpoint Kinase 2Protein KinasesProtein-Serine-Threonine KinasesCell Cycle ProteinsDNA DamageAtaxia Telangiectasia Mutated ProteinsG2 PhaseCell CycleGenes, cdcMitosisPhosphorylationM Phase Cell Cycle CheckpointsS PhaseCell Cycle CheckpointsProtein Kinase Inhibitorscdc25 PhosphatasesDNA ReplicationHydroxyureaPhosphatidylinositol 3-KinasesMutationCDC2 Protein KinaseDNA-Binding ProteinsMAP Kinase Signaling SystemG2 Phase Cell Cycle CheckpointsSaccharomyces cerevisiae ProteinsSchizosaccharomyces pombe ProteinsTumor Suppressor ProteinsSpindle ApparatusSchizosaccharomycesNuclear ProteinsCell Line, TumorIntracellular Signaling Peptides and ProteinsDNA RepairS Phase Cell Cycle CheckpointsSignal TransductionTumor Suppressor Protein p53KinetochoresSaccharomyces cerevisiaeRadiation, IonizingRNA, Small InterferingApoptosisHeLa CellsCalcium-Calmodulin-Dependent Protein KinasesProtein-Tyrosine KinasesProtein BindingEnzyme Activationsrc-Family KinasesModels, BiologicalNocodazoleCyclin-Dependent KinasesMolecular Sequence DataBlotting, WesternCell LineRNA InterferenceDNA Breaks, Double-StrandedG1 PhaseUltraviolet RaysCell DivisionMethyl MethanesulfonateHistonesCell SurvivalGenomic InstabilityAurora Kinasesp38 Mitogen-Activated Protein KinasesCdc20 ProteinsProtein Kinase CAntineoplastic AgentsAmino Acid SequenceCyclin BNeoplasmsFungal ProteinsTransfectionMitogen-Activated Protein Kinase 1Cyclic AMP-Dependent Protein KinasesEarly Detection of CancerProtein Structure, TertiaryChromosome SegregationDNA, FungalGamma RaysHCT116 CellsStaurosporineBreast NeoplasmsSerineMitogen-Activated Protein Kinase KinasesJNK Mitogen-Activated Protein Kinasesp21-Activated KinasesCell NucleusMitogen-Activated Protein Kinase 3Cell ProliferationColonic NeoplasmsEnzyme InhibitorsImmunoblottingTumor Cells, CulturedReplication Protein ARNA, MessengerBase SequenceDown-RegulationProto-Oncogene ProteinsAdaptor Proteins, Signal TransducingRadiation Tolerance