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Figure 2.
Figure 2. (a) The carbohydrate-binding site of congerin II.
The side-chains that bind the lactose or Mes molecules are shown
in blue. The hydrogen bonds between protein and ligand are shown
in yellow. The water molecule mediating hydrogen bonding is
represented as a red sphere. Omit electron density map around
the ligand molecules is superposed as purple network. The map
was phased by the final model without the ligand atoms, and
contoured at 3.0s level. (b) Comparison between the binding
sites of congerin II in ternary complex (blue) and in apo form
(orange). The spheres are water molecules in the apo form;
hydrogen bonds are shown in yellow.
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