Figure 4 - full size

 

Figure 4.
This Figure is intended to show how the shape of each cavity restricts the motion of the noble gas and defines the preferred binding sites. The color at each point indicates the distance from the closest point on the cavity wall. As can be seen by comparing with Figure 1, the noble gases bind at sites that are as far as possible from the walls of the cavity.

The above figure is reprinted by permission from Elsevier: J Mol Biol (2000, 302, 955-977) copyright 2000.