Checkpoint Kinase 2Protein KinasesAtaxia Telangiectasia Mutated ProteinsDNA DamageProtein-Serine-Threonine KinasesCell Cycle Proteinscdc25 PhosphatasesG2 PhasePhosphorylationCell CycleRadiation, IonizingTumor Suppressor ProteinsS PhaseDNA ReplicationHydroxyureaCell Cycle CheckpointsTumor Suppressor Protein p53StaurosporineDNA-Binding ProteinsCell Line, TumorGenes, cdcMitosisProtein Kinase InhibitorsDNA RepairRNA, Small InterferingG2 Phase Cell Cycle CheckpointsNuclear ProteinsHCT116 CellsSchizosaccharomycesCarbanilidesHeLa CellsEnzyme ActivationNaphthalimidesSignal TransductionUltraviolet RaysMutationSchizosaccharomyces pombe ProteinsSerineApoptosis14-3-3 ProteinsCaffeineCDC2 Protein KinaseThiophenesGamma RaysRNA InterferenceS Phase Cell Cycle CheckpointsDNA Breaks, Double-StrandedHistonesCell LineAphidicolinBlastulaTopoisomerase InhibitorsProtein BindingProto-Oncogene Proteins pp60(c-src)ThreonineCamptothecinRadiation ToleranceAlkaloidsReplication Protein APhosphoserineModels, BiologicalGenomic InstabilityM Phase Cell Cycle CheckpointsAntineoplastic AgentsBlotting, WesternTopoisomerase I InhibitorsCyclin BBRCA1 ProteinCell SurvivalImmunoblottingDNA-Activated Protein KinaseMolecular Sequence DataAmino Acid SequenceProtein Structure, TertiaryXenopus ProteinsCyclin B1Protein-Tyrosine KinasesAdaptor Proteins, Signal TransducingCentrosomeEnzyme InhibitorsCell NucleusNucleic Acid Synthesis Inhibitors1-NaphthylaminePoly(ADP-ribose) PolymerasesAtaxia TelangiectasiaFibroblastsG1 PhaseDNAUbiquitinationImmunoprecipitationCatalytic DomainDrug AgonismAmino Acid MotifsLi-Fraumeni SyndromeCyclin-Dependent Kinase Inhibitor p21Cell DeathHEK293 CellsRad51 RecombinaseCyclin-Dependent Kinase 2Chromosomal Instability