Reaction catalyzed by (N-acetylneuraminyl)-galactosylglucosylceramide N-acetylgalactosaminyltransferase (2.4.1.92)

		+			=			+
	UDP-galactose	+		p-nitrophenyl-GlcNAc	=		UDP	+		Gal-beta(1-4)GlcNAc-p-nitrophenyl