Implications of a carboxylate-bound C-cluster structure of carbon monoxide dehydrogenase.
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abstract
Seeing the C: Nickel-containing carbon monoxide dehydrogenases reversibly oxidize CO to CO2 at a {[Fe3S4]:[Ni Fe a]} active site known as the C-cluster. Recently reported structures of the enzyme by Jeoung and Dobbek, including those of CO2-bound and OH-bound intermediates, shed new light on the enzyme's catalytic mechanism. This Highlight describes these developments and their implications. (Chemical Equation Presented) 2008 Wiley-VCH Verlag GmbH & Co. KGaA.