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. Author manuscript; available in PMC: 2014 Jan 17.
Published in final edited form as: J Am Chem Soc. 2013 Jan 31;135(6):2198–2206. doi: 10.1021/ja308493k

Figure 1.

Figure 1

Different structures of the active sites of CODH IICh obtained by X-ray diffraction: (a) −600 mV with CO2, (b) −320 mV, (c) −320 mV with cyanide, and (d) CO-reduced CODH. Two positions are found for the dangling Fe-atom in the crystal structure, labeled Fe1a and Fe1b, respectively. The PDB codes are shown in each case.