Anti-XRG3 antibodies enable researchers to detect and measure the XRG3 antigen in biological samples. This target is a reported synonym of the XKR3 gene, which encodes XK related 3. The human version of XRG3 has a canonical amino acid length of 459 residues and a protein mass of 53.4 kilodaltons. It is reported to be localized in the cell membrane of cells. XRG3 is a member of the XK protein family.