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Demonstration of a new-to-nature pathway for ATP-driven reduction of CO2 to formate in vivo

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Satanowski, Ari | Marchal, Daniel | Perret, Alain | Petit, Jean-Louis | Bouzon, Madeleine | Döring, Volker | Dubois, Ivan | He, Hai | Smith, Edward | Heinemann, Matthias | Bar-Even, Arren | Erb, Tobias, J

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International audience. • Direct CO2-reduction to formate is found in naturalmetabolic routes such as the Wood-Ljungdahl pathway. Thereaction is catalyzed by formate dehydrogenases (FDH),which transfer 2e– from H2, ferredoxins or NADPH to CO2.• However, for organisms growing in aerobic conditions andat ambient CO2-concentrations (400 ppm), direct CO2-reduction has remained infeasible due to severe thermodynamicand kinetic constraints on the FDH reaction.

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