A Trio of Transition Metals in Anaerobic CO2 Fixation

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Science  18 Oct 2002:
Vol. 298, Issue 5593, pp. 552-553
DOI: 10.1126/science.1077335

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Certain anaerobic microorganisms can gain energy and biomass using carbon monoxide or dioxide and dihydrogen as sole sources of carbon and energy. In his Perspective, Peters explains how new results by Doukov et al. illuminate the carbon dioxide fixation pathway. Doukov et al. report that the enzyme responsible for the process contains a highly unusual metal cluster, with three different transition metals including copper, in one of its active sites.