Tags: Enzyme.
In enzymology a globoside alpha-N-acetylgalactosaminyltransferase (EC 2.4.1.88) is an enzyme that catalyzes the chemical reactionUDP-N-acetyl-D-galactosamine + N-acetyl-D-galactosaminyl-13-D-galactosyl-14-D-galactosyl-14-D- glucosylceramide UDP + N-acetyl-D-galactosaminyl-N-acetyl-D-galactosaminyl-13-D- galactosyl-14-D-galactosyl-14-D-glucosylceramideThe 3 substrates of this enzyme are UDP-N-acetyl-D-galactosamine N-acetyl-D-galactosaminyl-13-D-galactosyl-14-D-galactosyl-14-D- and glucosylceramide whereas its 3 products are UDP N-acetyl-D-galactosaminyl-N-acetyl-D-galactosaminyl-13-D- and galactosyl-14-D-galactosyl-14-D-glucosylceramide.This enzyme belongs to the family of glycosyltransferases specifically the hexosyltransferases.