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Figure 4.
Fig. 4. Stereoview showing density for a benzamidine molecule at
two sites. The electron density corresponds to 2Fo-Fc with the
benzamidine molecule omitted from the calculations. The maps are
contoured at 1.5a level. (a) Benzamidine bound in the specificity
pocket of ST-IIB with corresponding hydrogen-bonding pattern. (b)
Benzamidine molecule mediating intermolecular contacts at the exten-
sion of the primary binding site. Posible hydrogen bonds to Serl71 O
and Asn224 N62 are inicated with broken lines. Residues Thr#76 and
Phe#82 are from a neighbouring molecule.
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