Figure 3

Comparison of observed torsion angles (Φ) from the binding simulation between HA variants and avian- and human-type receptor analogs. Receptor analogs in the left panel have a Siaα(2,3)Gal linkage (avian-type). Receptor analogs in the right panel have a Siaα(2,6)Gal linkage (human-type). Each panel demonstrates plots of torsion angles (Φ) in degrees recorded at the time intervals in picoseconds (ps) during MD simulations.