Figure 5

Cleavage of glycans by influenza neuraminidase. Cleavage of different sialylated glycans 3-sialylolactosamine (3-SLN), 6-sialylolactosamine (6-SLN), Neu5Ac-Galactose (Neu5Ac-Gal) and Neu5Gc-Gal by (A) H9N2 GI, (B) H9N2 with replacement of the two amino acid stalk deletion and (C) H9N2 with mutation of P431K.