Hydride state accumulation in native [FeFe]-hydrogenase with the physiological reductant H-2 supports its catalytic relevance

Senger, Moritz; Kernmayr, Tobias; Lorenzi, Marco; Redman, Holly J. and Berggren, Gustav (2022): Hydride state accumulation in native [FeFe]-hydrogenase with the physiological reductant H-2 supports its catalytic relevance. In: Chemical Communications, Vol. 58, No. 51: pp. 7184-7187

Abstract

Small molecules in solution may interfere with mechanistic investigations, as they can affect the stability of catalytic states and produce off-cycle states that can be mistaken for catalytically relevant species. Here we show that the hydride state (H-hyd), a proposed central intermediate in the catalytic cycle of [FeFe]-hydrogenase, can be formed in wild-type [FeFe]-hydrogenases treated with H-2 in absence of other, non-biological, reductants. Moreover, we reveal a new state with unclear role in catalysis induced by common low pH buffers.

• Item Type: Journal article
• Faculties: Chemistry and Pharmacy > Department of Chemistry
• Subjects: 500 Science > 540 Chemistry
• ISSN: 1359-7345
• Language: English