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Figure 2.
Figure 2. The GbO4 Binding Site(A) Stereo-diagram of
binding site. The protein backbone is in ribbon representation
as in Figure 1B and secondary structures are labeled according
to Figure 1B. Residues in the protein interacting with the GbO4
receptor are in ball-and-stick representation with carbon atoms
in gray, oxygen atoms in red, and nitrogen atoms in blue.
Receptor residues are in ball-and-stick representation with
carbon atoms in silver, and oxygen and nitrogen atoms as in the
protein. Water molecules involved in interactions between the
protein and receptor residues are in ball representation
color-coded in magenta and labeled W1 to 7. Receptor residues
are labeled A to D as in Figure 1B.(B) Schematic representation
of interactions between protein and receptor. Direct polar
interactions are indicated by red arrows. Water-mediated
interactions are indicated by blue arrows. Brackets and arrows
in green indicate contacts with aromatic/hydrophobic platforms
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