A-1,3-mannosyl-glycoprotein 2-b-N-acetylglucosaminyltransferase

Alpha-1,3-mannosyl-glycoprotein 2-beta-N-acetylglucosaminyltransferase (EC 2.4.1.101, N-acetylglucosaminyltransferase I, N-glycosyl-oligosaccharide-glycoprotein N-acetylglucosaminyltransferase I, uridine diphosphoacetylglucosamine-alpha-1,3-mannosylglycoprotein beta-1,2-N-acetylglucosaminyltransferase, UDP-N-acetylglucosaminyl:alpha-1,3-D-mannoside-beta-1,2-N-acetylglucosaminyltransferase I, UDP-N-acetylglucosaminyl:alpha-3-D-mannoside beta-1,2-N-acetylglucosaminyltransferase I, alpha-1,3-mannosyl-glycoprotein beta-1,2-N-acetylglucosaminyltransferase, GnTI) is an enzyme with systematic name UDP-N-acetyl-D-glucosamine:3-(alpha-D-mannosyl)-beta-D-mannosyl-glycoprotein 2-beta-N-acetyl-D-glucosaminyltransferase.[1][2][3][4][5][6][7][8] This enzyme catalyses the following chemical reaction

UDP-N-acetyl-D-glucosamine + 3-(alpha-D-mannosyl)-beta-D-mannosyl-R UDP + 3-(2-[N-acetyl-beta-D-glucosaminyl]-alpha-D-mannosyl)-beta-D-mannosyl-R
Alpha-1,3-mannosyl-glycoprotein 2-beta-N-acetylglucosaminyltransferase
Identifiers
EC number2.4.1.101
CAS number102576-81-8
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum

R represents the remainder of the N-linked oligosaccharide in the glycoprotein acceptor.

References
  1. Harpaz N, Schachter H (May 1980). "Control of glycoprotein synthesis. Bovine colostrum UDP-N-acetylglucosamine:alpha-D-mannoside beta 2-N-acetylglucosaminyltransferase I. Separation from UDP-N-acetylglucosamine:alpha-D-mannoside beta 2-N-acetylglucosaminyltransferase II, partial purification, and substrate specificity". The Journal of Biological Chemistry. 255 (10): 4885–93. PMID 6445358.
  2. Mendicino J, Chandrasekaran EV, Anumula KR, Davila M (February 1981). "Isolation and properties of alpha-D-mannose:beta-1,2-N-acetylglucosaminyltransferase from trachea mucosa". Biochemistry. 20 (4): 967–76. doi:10.1021/bi00507a050. PMID 6452163.
  3. Miyagi T, Tsuiki S (September 1981). "Studies on UDP-N-acetylglucosamine : alpha-mannoside beta-N-acetylglucosaminyltransferase of rat liver and hepatomas". Biochimica et Biophysica Acta (BBA) - Enzymology. 661 (1): 148–57. doi:10.1016/0005-2744(81)90094-2. PMID 6170335.
  4. Oppenheimer CL, Eckhardt AE, Hill RL (November 1981). "The nonidentity of porcine N-acetylglucosaminyltransferases I and II". The Journal of Biological Chemistry. 256 (22): 11477–82. PMID 6457827.
  5. Oppenheimer CL, Hill RL (January 1981). "Purification and characterization of a rabbit liver alpha 1 goes to 3 mannoside beta 1 goes to 2 N-acetylglucosaminyltransferase". The Journal of Biological Chemistry. 256 (2): 799–804. PMID 6450208.
  6. Schachter H, Narasimhan S, Gleeson P, Vella G (1983). "Glycosyltransferases involved in elongation of N-glycosidically linked oligosaccharides of the complex or N-acetyllactosamine type". Methods in Enzymology. 98: 98–134. doi:10.1016/0076-6879(83)98143-0. PMID 6366476.
  7. Vella GJ, Paulsen H, Schachter H (June 1984). "Control of glycoprotein synthesis. IX. A terminal Man alpha l-3Man beta 1- sequence in the substrate is the minimum requirement for UDP-N-acetyl-D-glucosamine: alpha-D-mannoside (GlcNAc to Man alpha 1-3) beta 2-N-acetylglucosaminyltransferase I". Canadian Journal of Biochemistry and Cell Biology. 62 (6): 409–17. doi:10.1139/o84-056. PMID 6235906.
  8. Unligil UM, Zhou S, Yuwaraj S, Sarkar M, Schachter H, Rini JM (October 2000). "X-ray crystal structure of rabbit N-acetylglucosaminyltransferase I: catalytic mechanism and a new protein superfamily". The EMBO Journal. 19 (20): 5269–80. doi:10.1093/emboj/19.20.5269. PMC 314010. PMID 11032794.
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