EC number 2.4.1.138 IntEnz IntEnz view ExPASy NiceZyme view | CAS number 81032-47-5 BRENDA BRENDA entry KEGG KEGG entry | |
In enzymology, a mannotetraose 2-alpha-N-acetylglucosaminyltransferase (EC 2.4.1.138) is an enzyme that catalyzes the chemical reaction
UDP-N-acetyl-D-glucosamine + 1,3-alpha-D-mannosyl-1,2-alpha-D-mannosyl-1,2-alpha-D-mannosyl-D-mannoseThe 2 substrates of this enzyme are UDP-N-acetyl-D-glucosamine and 1,3-alpha-D-mannosyl-1,2-alpha-D-mannosyl-1,2-alpha-D-mannosyl-D-mannose, whereas its 2 products are UDP and 1,3-alpha-D-mannosyl-1,2-(N-acetyl-alpha-D-glucosaminyl-alpha-D-mannosyl)-1,2-alpha-D-mannosyl-D-mannose.
This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is UDP-N-acetyl-D-glucosamine:mannotetraose alpha-N-acetyl-D-glucosaminyltransferase. Other names in common use include alpha-N-acetylglucosaminyltransferase, uridine diphosphoacetylglucosamine mannoside, and alpha1->2-alphacetylglucosaminyltransferase.