mannotetraose 2-alpha-N-acetylglucosaminyltransferase; alpha-N-acetylglucosaminyltransferase; uridine diphosphoacetylglucosamine mannoside alpha1->2-alphacetylglucosaminyltransferase; UDP-N-acetyl-D-glucosamine:mannotetraose alpha-N-acetyl-D-glucosa • • •