Cell CycleCell Cycle ProteinsProtein BindingCell Cycle CheckpointsMolecular Sequence DataG1 PhaseAmino Acid SequenceMitosisS PhaseCell DivisionBase SequenceDNA-Binding ProteinsCyclinsCell LineBinding SitesTranscription FactorsNuclear ProteinsMenstrual CycleG2 PhaseRecombinant Fusion ProteinsApoptosisHeLa CellsPhosphorylationMutationTwo-Hybrid System TechniquesCyclin-Dependent Kinase Inhibitor p21Cyclin-Dependent Kinase Inhibitor p27Cell Line, TumorCell ProliferationRetinoblastoma ProteinG2 Phase Cell Cycle CheckpointsProtein Structure, TertiaryCarrier ProteinsTranscription, GeneticSaccharomyces cerevisiaeProtein-Serine-Threonine KinasesSignal TransductionDNATransfectionCells, CulturedKineticsPromoter Regions, GeneticCell NucleusG0 PhaseCDC2 Protein KinaseTumor Cells, CulturedRecombinant ProteinsTumor Suppressor Protein p53Gene Expression RegulationG1 Phase Cell Cycle CheckpointsRNA, MessengerCyclin-Dependent Kinase 2DNA ReplicationModels, BiologicalSaccharomyces cerevisiae ProteinsCyclin D1Sequence Homology, Amino AcidCyclin EDNA DamageGenes, cdcFlow CytometryCyclin AInterphaseBlotting, WesternCyclin BFungal ProteinsCyclin-Dependent Kinase 4Precipitin TestsTime FactorsTumor Suppressor ProteinsCloning, MolecularCDC2-CDC28 KinasesBinding, CompetitiveRepressor ProteinsMembrane ProteinsProteinsEstrous Cyclecdc25 PhosphatasesProtein KinasesE2F Transcription FactorsCell DifferentiationMicroscopy, FluorescenceDNA PrimersCyclin B1FibroblastsHistonesProto-Oncogene ProteinsGlutathione TransferaseCOS CellsModels, MolecularPhosphoproteinsCyclin DCell SurvivalDown-Regulation3T3 CellsMicrotubule-Associated ProteinsCitric Acid CycleE2F1 Transcription FactorTrans-ActivatorsTranscriptional Activation