Beta-galactosyl-N-acetylglucosaminylgalactosylglucosyl-ceramide beta-1,3-acetylglucosaminyltransferase
Identifiers
EC no.2.4.1.163
CAS no.85638-39-7
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Beta-galactosyl-N-acetylglucosaminylgalactosylglucosyl-ceramide beta-1,3-acetylglucosaminyltransferase (EC 2.4.1.163, uridine diphosphoacetylglucosamine-acetyllactosaminide beta1->3-acetylglucosaminyltransferase, poly-N-acetyllactosamine extension enzyme, UDP-N-acetyl-D-glucosamine:beta-D-galactosyl-1,4-N-acetyl-beta-D-glucosaminyl-1,3-beta-D-galactosyl-1,4-beta-D-glucosylceramide beta-1,3-acetylglucosaminyltransferase) is an enzyme with systematic name UDP-N-acetyl-D-glucosamine:beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminyl-(1->3)-beta-D-galactosyl-(1->4)-beta-D-glucosyl-(1<->1)-ceramide 3-beta-N-acetylglucosaminyltransferase.[1] This enzyme catalyses the following chemical reaction

UDP-N-acetyl-D-glucosamine + beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminyl-(1->3)-beta-D-galactosyl-(1->4)-beta-D-glucosyl-(1<->1)-ceramide UDP + N-acetyl-D-glucosaminyl-(1->3)-beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminyl-(1->3)-beta-D-galactosyl-(1->4)-beta-D-glucosyl-(1<->1)-ceramide

This enzyme requires Mn2+.

References

  1. ↑ Basu M, Basu S (October 1984). "Biosynthesis in vitro of Ii core glycosphingolipids from neolactotetraosylceramide by beta 1-3- and beta 1-6-N-acetylglucosaminyltransferases from mouse T-lymphoma". The Journal of Biological Chemistry. 259 (20): 12557–62. PMID 6238026.
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