Cell CycleCell Cycle ProteinsCheckpoint Kinase 2S PhaseG1 PhaseMitosisDisease ProgressionCell Cycle CheckpointsG2 PhaseProtein-Serine-Threonine KinasesGenes, cdcDNA DamageCyclinsCell DivisionM Phase Cell Cycle CheckpointsPhosphorylationCell ProliferationRetinoblastoma ProteinCyclin-Dependent KinasesG2 Phase Cell Cycle CheckpointsCyclin-Dependent Kinase Inhibitor p27Nuclear ProteinsDNA ReplicationProtein KinasesDNA-Binding ProteinsCyclin-Dependent Kinase Inhibitor p21Cyclin-Dependent Kinase 2CDC2 Protein KinaseMolecular Sequence DataApoptosisCell Line, TumorCyclin D1Spindle ApparatusSignal TransductionSaccharomyces cerevisiae ProteinsCyclin BMutationSaccharomyces cerevisiaeCyclin Ecdc25 PhosphatasesCyclin ATumor Suppressor Protein p53Tumor Suppressor ProteinsCell LineAmino Acid SequenceSchizosaccharomycesHeLa CellsCDC2-CDC28 KinasesE2F Transcription FactorsCyclin-Dependent Kinase 4Cyclin B1Ataxia Telangiectasia Mutated ProteinsS Phase Cell Cycle CheckpointsTranscription FactorsE2F1 Transcription FactorSchizosaccharomyces pombe ProteinsFlow CytometryHydroxyureaG0 PhaseKinetochoresCell NucleusModels, BiologicalFungal ProteinsBase SequenceProtein BindingCells, CulturedNocodazoleG1 Phase Cell Cycle CheckpointsRNA, Small InterferingTumor Cells, CulturedDNA RepairRNA, MessengerBlotting, WesternGene Expression RegulationTime FactorsTranscription, GeneticDNAEukaryotic CellsUbiquitin-Protein Ligase ComplexesCyclin DCell SurvivalHistonesAnaphase-Promoting Complex-CyclosomeRNA InterferenceInterphaseCarrier ProteinsDown-RegulationTransfectionChromosome SegregationFibroblastsGene Expression Regulation, NeoplasticTranscription Factor DP1AnaphaseProto-Oncogene ProteinsCdc20 ProteinsSequence Homology, Amino AcidMicrotubule-Associated ProteinsRepressor ProteinsBromodeoxyuridineRetinoblastoma-Binding Protein 1