Cell CycleCell Cycle ProteinsGenes, cdcMutationCheckpoint Kinase 2DNA DamageG2 PhasePoint MutationCell Cycle CheckpointsMitosisProtein-Serine-Threonine KinasesMutation, MissenseAtaxia Telangiectasia Mutated ProteinsS PhaseDNA RepairProtein KinasesDNA-Binding ProteinsNuclear ProteinsMolecular Sequence DataBase SequenceHydroxyureaSpindle ApparatusG2 Phase Cell Cycle CheckpointsGerm-Line MutationCell LineTumor Suppressor Protein p53M Phase Cell Cycle CheckpointsG1 PhaseDNA ReplicationTumor Suppressor ProteinsGamma RaysSaccharomyces cerevisiae ProteinsFrameshift MutationSaccharomyces cerevisiaeFungal ProteinsCell Line, TumorSchizosaccharomycesMad2 ProteinsSchizosaccharomyces pombe ProteinsPhosphorylationAmino Acid SequenceAllelesAtaxia TelangiectasiaChromosomal InstabilityUltraviolet RaysGenes, FungalGene DeletionRadiation, Ionizingcdc25 PhosphatasesPhenotypeDNA Mutational AnalysisApoptosisCyclinsCyclin-Dependent Kinase Inhibitor p21Signal TransductionCell DivisionCDC2 Protein KinaseGenes, p53Intracellular Signaling Peptides and ProteinsGenomic InstabilityCyclin BDNARadiation ToleranceDNA PrimersPedigreePolymerase Chain ReactionGerm CellsExonsMutation RateHeLa CellsRepressor ProteinsFibroblastsDNA, FungalModels, BiologicalG1 Phase Cell Cycle CheckpointsGenotypeMutagenesisBRCA1 ProteinProtein BindingNeoplasm ProteinsTranscription FactorsTumor Cells, CulturedRNA, MessengerImmunoglobulin Variable RegionCyclin B1Cells, CulturedGene Expression Regulation, NeoplasticModels, GeneticHeterozygoteDNA Breaks, Double-StrandedCell ProliferationS Phase Cell Cycle CheckpointsCell NucleusTransfectionNocodazoleTranscription, GeneticRetinoblastoma ProteinPolymorphism, Single-Stranded ConformationalProtein Structure, TertiarySequence Homology, Amino Acid