Anti-TEL1 antibodies are protein reagents that detect specific antigens. The TEL1 antigen is another term for the human protein ATM serine/threonine kinase, encoded by the ATM gene. The protein is a serine/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. Canonically, it has an amino acid length of 3056 residues and a mass of 350.7 kilodaltons. Its subcellular localization is in the nucleus, cytoplasmic vesicles, and cytoplasm and it is widely expressed in many tissue types. The TEL1 protein is a member of the PI3/PI4-kinase protein family. Other alias names for TEL1 include AT1, ATA, and ATC. Some TEL1 antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. In addition, ELISA is also a common application.