Reaction catalyzed by globoside alpha-N-acetylgalactosaminyltransferase (2.4.1.88)

		+		globoside	=			+
	UDP-N-acetyl-alpha-D-galactosamine	+		globoside	=		UDP	+		N-acetyl-D-galactosaminyl-N-acetyl-D-galactosaminyl-1,3-D-galactosyl-1,4-D-galactosyl-1,4-D-glucosylceramide