Checkpoint Kinase 2Protein-Serine-Threonine KinasesProtein KinasesCell Cycle ProteinsDNA DamagePhosphorylationAtaxia Telangiectasia Mutated ProteinsMitosisCell CycleG2 PhaseGenes, cdcM Phase Cell Cycle CheckpointsSerineProtein Kinase InhibitorsPhosphatidylinositol 3-KinasesS PhaseCell Cycle CheckpointsMAP Kinase Signaling SystemEnzyme ActivationCDC2 Protein KinaseMutationProtein-Tyrosine Kinasescdc25 PhosphatasesDNA-Binding ProteinsIntracellular Signaling Peptides and ProteinsSaccharomyces cerevisiae ProteinsDNA ReplicationCell LineMolecular Sequence DataHydroxyureaAmino Acid SequenceProtein Kinase CPhosphoproteinsNuclear ProteinsSignal TransductionProtein BindingSpindle ApparatusTyrosineCalcium-Calmodulin-Dependent Protein KinasesSchizosaccharomyces pombe Proteinssrc-Family KinasesSchizosaccharomycesCyclic AMP-Dependent Protein KinasesPhosphoserineG2 Phase Cell Cycle CheckpointsCell Line, TumorTumor Suppressor ProteinsThreonineHeLa CellsSaccharomyces cerevisiaeKinetochoresS Phase Cell Cycle CheckpointsMitogen-Activated Protein Kinase 1Blotting, Westernp38 Mitogen-Activated Protein KinasesCyclin-Dependent KinasesApoptosisEnzyme InhibitorsDNA RepairModels, BiologicalCells, CulturedProtein Structure, TertiaryTransfectionRNA, Small InterferingMitogen-Activated Protein Kinase 3Casein Kinase IIMitogen-Activated Protein KinasesNocodazoleTumor Suppressor Protein p53Radiation, IonizingPhosphothreonineProto-Oncogene Proteins c-aktMitogen-Activated Protein Kinase KinasesHistonesKineticsImmunoblottingProto-Oncogene ProteinsPhosphoprotein PhosphatasesJNK Mitogen-Activated Protein KinasesOxidative PhosphorylationG1 PhaseRecombinant ProteinsAurora KinasesCell NucleusRecombinant Fusion ProteinsExtracellular Signal-Regulated MAP KinasesBinding SitesCell DivisionRNA InterferenceAdaptor Proteins, Signal TransducingPhosphotyrosineGlycogen Synthase Kinase 3Ultraviolet RaysProtein Processing, Post-TranslationalFungal ProteinsCyclin BPrecipitin TestsCdc20 ProteinsCarrier ProteinsDNA Breaks, Double-Stranded