Reaction catalyzed by exo-alpha-sialidase (3.2.1.18)

		+			=			+
	3'-sialyllactose	+		Galp(beta1,2)[Galp(beta1,3)]Galp(beta1,6)[Galf(beta1,4)]GlcNAcOBn	=		lactose	+		Neu5Ac(alpha2,3)[Galp(beta1,2)]Galp(beta1,6)[Galf(beta1,4)]GlcNAcOBn