Cell CycleTumor Suppressor Protein p53Cell Cycle ProteinsTumor Suppressor ProteinsGenes, Tumor SuppressorGenes, cdcDNA DamageCheckpoint Kinase 2G2 PhaseCell Cycle CheckpointsProtein-Serine-Threonine KinasesMitosisNuclear ProteinsS PhaseAtaxia Telangiectasia Mutated ProteinsVon Hippel-Lindau Tumor Suppressor ProteinDNA-Binding ProteinsRetinoblastoma ProteinMutationProtein KinasesCell Line, TumorDNA RepairG1 PhaseTumor Suppressor Protein p14ARFApoptosisCyclin-Dependent Kinase Inhibitor p21Molecular Sequence DataPhosphorylationCyclinsSpindle ApparatusHydroxyureaProto-Oncogene Proteins c-mdm2G2 Phase Cell Cycle CheckpointsGamma RaysGenes, p53M Phase Cell Cycle CheckpointsCell LineCell DivisionDNA ReplicationSignal TransductionGene Expression Regulation, NeoplasticProtein BindingUltraviolet RaysSaccharomyces cerevisiae ProteinsBase SequenceTumor Cells, CulturedFungal ProteinsMad2 ProteinsSaccharomyces cerevisiaeIntracellular Signaling Peptides and ProteinsSchizosaccharomycesCell ProliferationTransfectionRepressor ProteinsRadiation, IonizingTranscription FactorsAmino Acid SequenceHeLa CellsNeoplasm ProteinsSchizosaccharomyces pombe ProteinsChromosomal InstabilityFibroblastsGene DeletionProto-Oncogene ProteinsCyclin-Dependent Kinase Inhibitor p16Ataxia Telangiectasiacdc25 PhosphatasesCDC2 Protein KinaseNeoplasmsCell Transformation, NeoplasticModels, BiologicalCell NucleusTranscription, GeneticBlotting, WesternGenes, FungalRNA, Small InterferingPromoter Regions, GeneticNeurofibromin 2Cyclin BCells, CulturedBRCA1 ProteinRadiation ToleranceAdenomatous Polyposis Coli ProteinUbiquitin-Protein LigasesRNA, MessengerGenomic InstabilityCarrier ProteinsDNADown-RegulationProteinsRNA InterferenceProtein Structure, TertiaryCyclin-Dependent KinasesFlow CytometryPhenotypeCell SurvivalGenes, SuppressorE2F Transcription FactorsG1 Phase Cell Cycle CheckpointsGene Expression Regulation