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. Author manuscript; available in PMC: 2012 Mar 21.
Published in final edited form as: Inorg Chem. 2011 Feb 15;50(6):2302–2320. doi: 10.1021/ic1020127

Figure 8.

Figure 8

Schematic reaction cycle in E. coli RNR R2 shown with calculated relative energy (ΔE, eV), simple redox potential (E0, V), and coupled redox potentials (E0′, V, at pH = 7.6) between the typical oxidation and radical states. Both model X(di-μ-oxo) and model X(di-μ-oxo)-Trp48+· are shown in Figure 2. Model X(di-μ-oxo)-Asp84H-Tyr122· is shown in Figure 5a with protonated Asp84 sidechain.