R represents the remainder of the N-linked oligosaccharide in the glycoprotein acceptor (click here for diagram). The action of this enzyme probably prevents further attachment of N-acetylglucosamine residues to the growing carbohydrate chain.
Narasimhan, S. Control of glycoprotein synthesis. UDP-GlcNAc:glycopeptide β4-N-acetylglucosaminyltransferase III, an enzyme in hen oviduct which adds GlcNAc in β1-4 linkage to the β-linked mannose of the trimannosyl core of N-glycosyl oligosaccharides. J. Biol. Chem.257 (1982) 10235–10242. [PMID: 6213618]
Schachter, H., Narasimhan, S., Gleeson, P. and Vella, G. Glycosyltransferases involved in elongation of N-glycosidically linked oligosaccharides of the complex or N-acetyllactosamine type. Methods Enzymol.98 (1983) 98–134. [PMID: 6366476]
[EC 184.108.40.206 created 1984, modified 2001 (EC 220.127.116.11 created 1972, part incorporated 1984)]