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Figure 3.
Figure 3. Stereo image of the unliganded PIV3 HN active
site in the hexagonal (green) and orthorhombic (yellow) crystal
forms. Only the "up" conformer of the side-chain of Y530 is
shown for the hexagonal crystal form. The two active-site water
molecules described in the text, w1 and w2, are shown, colored
red for in the hexagonal crystal form and black for in the
orthorhombic crystal form. Potential hydrogen bonds are shown as
black dotted lines. The Figure was produced using MOLSCRIPT[55.]
and Raster3D. [56.]
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