Anti-ATK antibodies enable researchers to detect and measure the ATK antigen in biological samples. This target is a reported synonym of the BTK gene, which encodes Bruton tyrosine kinase. This protein is known to function in adaptive immune responses and the apoptotic pathway, among other biological roles. The human version of ATK has a canonical amino acid length of 659 residues and a protein mass of 76.3 kilodaltons. It is reported to be localized in the cell membrane, nucleus, and cytoplasm of cells and notably expressed in many tissues, such as the appendix and colon. Other names for this target antigen include AGMX1 and AT. Western Blot is the most common application for the ATK antibodies listed below. ELISA, Immunofluorescence, and Immunohistochemistry are also common applications.