Anti-DC2 antibodies enable researchers to detect and measure the DC2 antigen in biological samples. This target is a reported synonym of the OSTC gene, which encodes oligosaccharyltransferase complex non-catalytic subunit. This protein is reported to be a specific component of the STT3A-containing form of the oligosaccharyl transferase (OST) complex that catalyzes the initial transfer of a defined glycan (Glc(3)Man(9)GlcNAc(2) in eukaryotes) from the lipid carrier dolichol-pyrophosphate to an asparagine residue within an Asn-X-Ser/Thr consensus motif in nascent polypeptide chains, the first step in protein N-glycosylation. The human version of DC2 has a canonical amino acid length of 149 residues and a protein mass of 16.8 kilodaltons, although 2 isoforms have been identified. It is reported to be localized in the ER of cells. DC2 is a member of the OSTC protein family.