BMC Genomics 2009, 10(Suppl 3):S24 http://www.biomedcentral.com/1471-2164/10/S3/S24 Figure 3 Comparison of observed torsion angles (F) from the binding simulation between HA variants and avian- and human-type receptor analogs. Receptor analogs in the left panel have a Siaa(2,3)Gal linkage (avian-type). Receptor analogs in the right panel have a Siaa(2,6)Gal linkage (human-type). Each panel demonstrates plots of torsion angles (F) in degrees recorded at the time intervals in picoseconds (ps) during MD simulations. Page 6 of 9 (page number not for citation purposes)