Reaction catalyzed by exo-alpha-sialidase (3.2.1.18)
+
=
+
3'-sialyllactose
+
Galp(beta1,2)[Galp(beta1,3)]Galp(beta1,6)[Galf(beta1,4)]GlcNAc
=
lactose
+
Neu5Ac(alpha2,3)[Galp(beta1,2)]Galp(beta1,6)[Galf(beta1,4)]GlcNAc