Globoside alpha-N-acetylgalactosaminyltransferase
Template:Short description Template:Infobox enzyme In enzymology, a globoside alpha-N-acetylgalactosaminyltransferase (EC 2.4.1.88) is an enzyme that catalyzes the chemical reaction
- UDP-N-acetyl-D-galactosamine + N-acetyl-D-galactosaminyl-1,3-D-galactosyl-1,4-D-galactosyl-1,4-D- glucosylceramide UDP + N-acetyl-D-galactosaminyl-N-acetyl-D-galactosaminyl-1,3-D- galactosyl-1,4-D-galactosyl-1,4-D-glucosylceramide
The 3 substrates of this enzyme are UDP-N-acetyl-D-galactosamine, N-acetyl-D-galactosaminyl-1,3-D-galactosyl-1,4-D-galactosyl-1,4-D-, and glucosylceramide, whereas its 3 products are UDP, N-acetyl-D-galactosaminyl-N-acetyl-D-galactosaminyl-1,3-D-, and galactosyl-1,4-D-galactosyl-1,4-D-glucosylceramide.
This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is UDP-N-acetyl-D-galactosamine:N-acetyl-D-galactosaminyl-1,3-D-galacto syl-1,4-D-galactosyl-1,4-D-glucosylceramide alpha-N-acetyl-D-galactosaminyltransferase. Other names in common use include uridine diphosphoacetylgalactosamine-globoside, alpha-acetylgalactosaminyltransferase, Forssman synthase, and globoside acetylgalactosaminyltransferase. This enzyme participates in glycosphingolipid biosynthesis - globoseries and glycan structures - biosynthesis 2.
References
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