Anti-mat-Xa antibodies enable researchers to detect and measure the mat-Xa antigen in biological samples. This target is a reported synonym of the GTDC1 gene, which encodes glycosyltransferase like domain containing 1. The human version of mat-Xa has a canonical amino acid length of 458 residues and a protein mass of 52.6 kilodaltons, although 6 isoforms have been identified. mat-Xa is a member of the Glycosyltransferase group 1 protein family.