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- W2102055688 endingPage "797" @default.
- W2102055688 startingPage "797" @default.
- W2102055688 abstract "Carbon dioxide and carbon monoxide are important components of the carbon cycle. Major research efforts are underway to develop better technologies to utilize the abundant greenhouse gas, CO2, for harnessing ‘green’ energy and producing biofuels. One strategy is to convert CO2 into CO, which has been valued for many years as a synthetic feedstock for major industrial processes. Living organisms are masters of CO2 and CO chemistry and, here, we review the elegant ways that metalloenzymes catalyze reactions involving these simple compounds. After describing the chemical and physical properties of CO and CO2, we shift focus to the enzymes and the metal clusters in their active sites that catalyze transformations of these two molecules. We cover how the metal centers on CO dehydrogenase catalyze the interconversion of CO and CO2 and how pyruvate oxidoreductase, which contains thiamin pyrophosphate and multiple Fe4S4clusters, catalyzes the addition and elimination of CO2 during intermediary metabolism. We also describe how the nickel center at the active site of acetyl-CoA synthase utilizes CO to generate the central metabolite, acetyl-CoA, as part of the Wood-Ljungdahl pathway, and how CO is channelled from the CO dehydrogenase to the acetyl-CoA synthase active site. We cover how the corrinoidiron–sulfurprotein interacts with acetyl-CoA synthase. This protein uses vitamin B12 and a Fe4S4cluster to catalyze a key methyltransferase reaction involving an organometallic methyl-Co3+ intermediate. Studies of CO and CO2 enzymology are of practical significance, and offer fundamental insights into important biochemical reactions involving metallocenters that act as nucleophiles to form organometallic intermediates and catalyze C–C and C–S bond formations." @default.
- W2102055688 created "2016-06-24" @default.
- W2102055688 creator A5009483290 @default.
- W2102055688 creator A5039245542 @default.
- W2102055688 creator A5054438126 @default.
- W2102055688 creator A5080730574 @default.
- W2102055688 creator A5083671887 @default.
- W2102055688 date "2011-01-01" @default.
- W2102055688 modified "2023-09-25" @default.
- W2102055688 title "Metal centers in the anaerobic microbial metabolism of CO and CO2" @default.
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