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Figure 4.
Figure 4. Stereo picture of the active site of the Met99Thr
variant of CPO-A2. (a) Stereo picture of the electron density
showing the bound chloride ion and the side-chain conformation
of Thr99 in the variant. The density of the (2F[obs]–F[calc])
map is contoured at the 1.0 σ level. (b) Stereo picture of a
superimposition of wild-type CPO-L (C^α trace and carbon atoms
colored dark gray) on the variant (C^α trace colored red and
carbon atoms colored yellow). The chloride ion is colored
magenta. The chloride ion is colored magenta.
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