Figure 11.

Induced electric field of the salt-bridge between Arg₂₄₅ and Glu₂₂₃ on the iron(IV)-oxo(chloride) active site. Electrostatic potential was calculated for model ⁵Re₄ (A) and model ⁵Re_4,mod (B), which is model 4 with rotated Arg₂₄₅ and Glu₂₂₃ residues with respect to the Cl–Fe axis. Color coding for the amino stick representations changes from red (negative potential) to blue (positive potential). The direction of the induced electric field is given by the arrow.