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Figure 4.
Fig. 4. Interactions between the indole ring of U-90152 and
Pro-236. U-90152 is shown with thick bonds, residues 235-237
with thin bonds and interatomic distances <3.6 Å by broken
lines. With so many interactions it is not surprising that
mutations of this residue (such as Pro-236-Leu) disrupt the
binding of BHAPs.
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