Marc Fontecave on Muck Rack

Marc Fontecave

As seen in: Chimie des processus biologiques - Marc Fontecave, Color Research & Application, Nature, Wiley, Wiley Online Library, Le Figaro, Le Monde, L'Express, The Conversation, ACS Publications, American Chemical Society and
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Articles

Selective Acidic CO2 Electroreduction to Methane Using Crown Ether‐Functionalized Copper‐Based Electrodes

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By Duy nguyen, Sandrine Zanna, Ngoc Huan Tran, Marc Fontecave
| Wiley Online Library Verified
Conflicts of Interest The authors declare no conflicts of interest. Supporting Information Filename Description cssc70410-sup-0001-SuppData-S1.pdf1.3 MB Supplementary Material References 1, , , , , and , “Reaction Environment Regulation for Electrocatalytic CO2 Reduction in Acids,” Angewandte Chemie International Edition 63 (2024): e202404574. 2, , , , and , “Electrocatalytic CO2 Reduction in Acidic Medium,” Chem Catalysis 3 (2023): 100542.
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Evolution, structure and function of L-cysteine desulfidase, an enzyme involved in sulfur metabolism in the methanogenic archeon Methanococcus maripaludis | Communications Biology

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By Sylvain Gervason, Paolo Zecchin, Ludovic Pecqueur, Pierre Garcia, Jean-Luc Ravanat, William Whitman, Marc Fontecave
| Nature Verified
Abstract The biosynthesis of sulfur-containing molecules, which play essential roles in cell metabolism, often relies on enzymes that mobilize sulfur from cysteine. The function of such enzyme, L-cysteine desulfidase CyuA, which catalyzes L-cysteine decomposition to pyruvate, ammonia, and hydrogen sulfide, remains incompletely understood.
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Dissecting the Mechanism of Biosynthesis of Sulfurated Biomolecules: The Case of tRNA Sulfuration

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By Sylvain Gervason, Marc Fontecave
1. Class I Es use a key cysteinyl residue to form a persulfide intermediate. After deprotonation (pKa 6.2), the nucleophilic persulfide attacks the activated carbonyl group on the substrate, to form a disulfide (S–S) intermediate. To regenerate the active cysteinyl form and permit multiple turnovers, a two-electron reducing system is required. In vitro assays often use dithiothreitol (DTT) as the reductant.
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