SpecificityThis antibody recognizes full-length ATM, a 370 kD nuclear phosphoprotein, which is involved in the autooal recessive disease ataxia telangiectasia (AT). ATM belongs to a novel family of proteins associated with cell cycle regulation and response to DNA repair. The C-terminal region has extensive homology to the catalytic domains of phosphatidylinositol 3-kinases (PI3 kinases). Its usefulness to monitor altered ATM expression in cancer is under active investigations.
FunctionSerine/threonine protein kinase which activates checkpoint signaling upon double strand breaks (DSBs), apoptosis and genotoxic stresses such as ionizing ultraviolet A light (UVA), thereby acting as a DNA damage sensor. RPubMed:10550055, PubMed:10766245, PubMed:10802669, PubMed:10839545, PubMed:10910365, PubMed:10973490, PubMed:11375976, PubMed:12086603, PubMed:12556884, PubMed:14871926, PubMed:15448695, PubMed:15456891, PubMed:15916964, PubMed:16086026, PubMed:16858402, PubMed:17923702, PubMed:19431188, PubMed:19965871, PubMed:26774286, PubMed:29203878, PubMed:30612738, PubMed:30886146, PubMed:9733514, PubMed:9733515, PubMed:9843217}.