Anti-Ost1 antibodies enable researchers to detect and measure the Ost1 antigen in biological samples. This target is a reported synonym of the RPN1 gene, which encodes ribophorin I. This protein is a known subunit 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 Ost1 has a canonical amino acid length of 607 residues and a protein mass of 68.6 kilodaltons. It is reported to be localized in the ER of cells and widely expressed in many tissue types. Ost1 is a member of the OST1 protein family. Some Ost1 antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. In addition, ELISA is also a common application.