Anti-Englb antibodies enable researchers to detect and measure the Englb antigen in biological samples. This target is a reported synonym of the EXOG gene, which encodes exo/endonuclease G. This protein is known to function in the apoptotic pathway, among other biological roles. The human version of Englb has a canonical amino acid length of 368 residues and a protein mass of 41.1 kilodaltons, although 4 isoforms have been identified. It is reported to be localized in the mitochondria of cells and widely expressed in many tissue types. Other names for this target antigen include ENDOGL1, ENDOGL2, and ENGL.