Anti-REGR antibodies enable researchers to detect and measure the REGR antigen in biological samples. This target is a reported synonym of the EXTL3 gene, which encodes exostosin like glycosyltransferase 3. This protein is known to function in protein glycosylation, among other biological roles. The human version of REGR has a canonical amino acid length of 919 residues and a protein mass of 104.7 kilodaltons. It is reported to be localized in the nucleus, ER, Golgi, and cell membrane of cells and widely expressed in many tissue types. Other names for this target antigen include BOTV, BOTV, and EXTL1L. Immunohistochemistry is the most common application for the REGR antibodies listed below. ELISA and Western Blot are also common applications.