Oligosaccaryltransferase (IPR018943)

Short name: Oligosaccaryltransferase

Overlapping homologous superfamilies

Family relationships



Ost4 is a very short, approximately 30 residues, enzyme found from fungi to vertebrates. It is a member of the ER oligosaccaryltansferase complex, EC:, that catalyses the asparagine-linked glycosylation of proteins. It appears to be an integral membrane protein that mediates the en bloc transfer of a pre-assembled high-mannose oligosaccharide onto asparagine residues of nascent polypeptides as they enter the lumen of the rough endoplasmic reticulum.

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.