These Ost1 ELISA kits are immunodetection tools for measuring the levels of Ost1 in biological samples. Ost1 is an alias of the human RPN1 gene, which encodes the protein, ribophorin I. The 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 RPN1 protein is described to be 607 amino acid residues in length and 68.6 kilodaltons in mass. It is localized to the ER of the cell. In terms of tissue specificity, it is reported to be expressed in all tissues tested. This protein is known to be glycosylated. Other names for this target antigen include . Click on the following ELISA kits for more detailed information, including target reactivity and assay sensitivity.