Figure 4 - full size

Figure 4.
Figure 4. Stereo images of the active site of PIV3 HN complexed with (a) b-sialic acid, (b) Neu5Ac2en and (c) zanamivir. Two active-site water molecules are shown (w1 and w2, see the text). Potential hydrogen bonds are shown as black dotted lines. The Figure was produced using MOLSCRIPT[55.] and Raster3D. [56.]