In enzymology, a N-acetyllactosaminide beta-1,3-N-acetylglucosaminyltransferase () is an enzyme that catalyzes the chemical reaction

High-mannose-oligosaccharide beta-1,4-N-acetylglucosaminyltransferase (), uridine diphosphoacetylglucosamine-oligosaccharide acetylglucosaminyltransferase, acetylglucosamine-oligosaccharide acetylglucosaminyltransferase, UDP-GlcNAc:oligosaccharide beta-N-acetylglucosaminyltransferase, UDP-N-acetyl-D-glucosamine:high-mannose-oligosaccharide beta-1,4-N-acetylglucosaminyltransferase) is an enzyme with systematic name UDP-N-acetyl-D-glucosamine:high-mannose-oligosaccharide 4-beta-N-acetylglucosaminyltransferase. This enzyme catalyses the following chemical reaction

The enzyme Endoglycosidase H (, Endo-β-N-acetylglucosaminidase H, N,N'-diacetylchitobiosyl beta-N-acetylglucosaminidase, mannosyl-glycoprotein endo-beta-N-acetylglucosamidase, di-N-acetylchitobiosyl beta-N-acetylglucosaminidase, endo-beta-acetylglucosaminidase, endo-beta-(1->4)-N-acetylglucosaminidase, mannosyl-glycoprotein 1,4-N-acetamidodeoxy-beta-D-glycohydrolase, endoglycosidase S, endo-N-acetyl-beta-D-glucosaminidase, endo-N-acetyl-beta-glucosaminidase, endo-beta-N-acetylglucosaminidase D, endo-beta-N-acetylglucosaminidase F, endo-beta-N-acetylglucosaminidase H, endo-beta-N-acetylglucosaminidase L, glycopeptide-D-mannosyl-4-N-(N-acetyl-D-glucosaminyl)2-asparagine 1,4-N-acetyl-beta-glucosaminohydrolase, endoglycosidase H) is an enzyme with systematic name glycopeptide-D-mannosyl-N4-(N-acetyl-D-glucosaminyl)2-asparagine 1,4-N-acetyl-beta-glucosaminohydrolase. It is a highly specific endoglycosidase which cleaves asparagine-linked mannose rich oligosaccharides, but not highly processed complex oligosacchar