alpha-1,3-mannosyl-glycoprotein 4-beta-N-acetylglucosaminyltransferase; N-acetylglucosaminyltransferase IV; N-glycosyl-oligosaccharide-glycoprotein N-acetylglucosaminyltransferase IV; beta-acetylglucosaminyltransferase IV; uridine diphosphoacetylglu • • •