FeFe hydrogenase reductive inactivation and implication for catalysis - Aix-Marseille Université Access content directly
Journal Articles Energy & Environmental Science Year : 2014

FeFe hydrogenase reductive inactivation and implication for catalysis

Abstract

We show that FeFe hydrogenases inactivate at low potential, in a complex process that is mostly reversible. A form of the enzyme that is produced slowly and reversibly under reductive conditions has no proton activity under reductive conditions, although it can still oxidize H2 under oxidative conditions. This suggests that the so-called “super-reduced” state of the active site H-cluster is not part of the normal catalytic cycle. We also discuss our findings in relation to the optimization of H2-photoproduction devices based on FeFe hydrogenases that receive electrons from low potential photosensitizers.
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Dates and versions

hal-01481475 , version 1 (02-03-2017)

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Viviane Hajj, Carole Baffert, Kateryna Sybirna, Isabelle Meynial Salles, Philippe Soucaille, et al.. FeFe hydrogenase reductive inactivation and implication for catalysis. Energy & Environmental Science, 2014, 7 (2), pp.715 - 719. ⟨10.1039/c3ee42075b⟩. ⟨hal-01481475⟩
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