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. Author manuscript; available in PMC: 2019 Nov 28.
Published in final edited form as: Chem Rev. 2018 Oct 29;118(22):10840–11022. doi: 10.1021/acs.chemrev.8b00074

Figure 2.

Figure 2.

Heme-copper binuclear center (BNC) active site in HCOs, as represented by X-ray crystal structures from (A) a fully reduced iron(II)∙∙∙copper(I) bovine heart cytochrome c oxidase (CcO) and (B) a reduced but Fea3 carbon monoxide (CO) bound derivative.