Anti-STT3A antibodies are used in the immunodetection of the protein STT3 oligosaccharyltransferase complex catalytic subunit A. In humans, the canonical protein has a reported length of 705 amino acid residues and a mass of 80.5 kDa. Its subcellular localization is in the ER. Up to 2 different isoforms have been reported for this protein. It is notably expressed at high levels in the placenta, liver, muscle and pancreas, and at very low levels in the brain, lung and kidney. A member of the STT3 protein family, STT3A is a known catalytic 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. Synonyms for this target antigen include CDG1WAR, ITM1, TMC, dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit STT3A, and CDG1WAD. A number of STT3A antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. ELISA and Immunohistochemistry are also common applications.