Tags: Enzyme.
In enzymology a globotriaosylceramide 3-beta-N-acetylgalactosaminyltransferase (EC 2.4.1.79) is an enzyme that catalyzes the chemical reactionUDP-N-acetyl-D-galactosamine + alpha-D-galactosyl-(1->4)-beta-D-galactosyl-(1->4)-beta-D-glucosyl- (11)-ceramide UDP + N-acetyl-beta-D-galactosaminyl-(1->3)-alpha-D-galactosyl-(1->4)- beta-D-galactosyl-(1->4)-beta-D-glucosyl-(11)-ceramideThe 3 substrates of this enzyme are UDP-N-acetyl-D-galactosamine [[alpha-D-galactosyl-(1->4)-beta-D-galactosyl-(1->4)-beta-D-glucosyl-]] and (11)-ceramide whereas its 3 products are UDP [[N-acetyl-beta-D-galactosaminyl-(1->3)-alpha-D-galactosyl-(1->4)-]] and [[beta-D-galactosyl-(1->4)-beta-D-glucosyl-(11)-ceramide]].This enzyme belongs to the family of glycosyltransferases specifically the hexosyltransferases.