Anti-TEG-261 antibodies enable researchers to detect and measure the TEG-261 antigen in biological samples. This target is a reported synonym of the TEX261 gene, which encodes testis expressed 261. This protein is known to function in Golgi transport and the regulation of apoptosis, among other biological roles. The human version of TEG-261 has a canonical amino acid length of 196 residues and a protein mass of 22.5 kilodaltons. It is reported to be localized in the membrane of cells and notably expressed in the seminal vesicle, pancreas, lung, heart muscle, and bone marrow. TEG-261 is a member of the SVP26 protein family.