Reaction catalyzed by alpha-N-acetylgalactosaminide alpha-2,6-sialyltransferase (2.4.3.3)

		+			=			+
	CMP-N-acetylneuraminate	+		glycano-1,3-(N-acetyl-alpha-D-galactosaminyl)-glycoprotein	=		CMP	+		glycano-(2,6-alpha-N-acetylneuraminyl)-(N-acetyl-D-galactosaminyl)-glycoprotein