Anti-ugpQ antibodies enable researchers to detect and measure the ugpQ antigen in biological samples. This target is a reported synonym of the GDPD4 gene, which encodes glycerophosphodiester phosphodiesterase domain containing 4. This protein is known to function in the metabolism of lipids, among other biological roles. The human version of ugpQ has a canonical amino acid length of 623 residues and a protein mass of 72 kilodaltons, although 2 isoforms have been identified. It is reported to be localized in the membrane of cells. ugpQ is a member of the Glycerophosphoryl diester phosphodiesterase protein family.