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Figure 4.
FIGURE 4. A, the active site of ferric W41A, showing the
coordination of His-42 to the iron. SigmaA-weighted 2F[o] - F[c]
electron density at 1  is shown in blue, and
sigmaA-weighted F[o] - F[c] electron density at 3 is shown
in green. The positive F[o] - F[c] electron density in green
overlays with the position of His-42 in the structure of rsAPX.
Water molecules are shown as red spheres. B, stereo view of a
structural alignment of the orientation of His-42 in rsAPX (in
blue, Protein Data Bank code 1OAG) with the active site in W41A
(in green). Water molecules are shown as red spheres for W41A.
This figure was created using PyMOL (40).
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