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Figure 3
The entrance of the isoprenoid diphosphate-binding site in (a) the wild-type and (b) the mutated enzyme. GPP molecules are shown as in Fig. 2[link]. Selected amino-acid residues are depicted in stick mode and colored C yellow, N blue, O red. Hydrogen-bonding interactions between the MECP synthase and GPP are displayed as red dashed lines and water molecules as red spheres. In (b) the white chicken wire represents an omit (2FoFc) electron-density map corresponding to the mutated residues and contoured at the 1.4σ level. Fo and Fc represent observed and calculated structure factors, respectively.

ISSN: 2053-230X
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