ATM protein ATR protein Amyloid beta-Peptides CDK2 protein, human Cell Cycle Cell Line Cell Survival Cisplatin Cyclic AMP-Dependent Protein Kinases Cyclin-Dependent Kinase 2 Cyclin-Dependent Kinase Inhibitor p19 DNA DNA Damage DNA Repair DNA damage DNA repair Gene Expression Regulation HEK293 Cells Humans Mutation Phosphorylation Protein Transport Signal Transduction Ultraviolet Rays amyloid beta protein article cell cycle cell line cell nucleus cell strain HEK293