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Your search keyword '"Mouesca, J.-M."' showing total 2 results
Start Over Author "Mouesca, J.-M." Journal chemical communications
2 results on '"Mouesca, J.-M."'

2. X-ray structural, functional and computational studies of the O2-sensitive E. coli hydrogenase-1 C19G variant reveal an unusual [4Fe–4S] cluster.

Author

Volbeda, A., Mouesca, J. M., Darnault, C., Roessler, M. M., Parkin, A., Armstrong, F. A., and Fontecilla-Camps, J. C.

Subjects
*ESCHERICHIA coli, *HYDROGENASE, *X-ray diffraction measurement, *ELECTRON paramagnetic resonance spectroscopy, *CRYSTAL structure, *CHARGE exchange
Abstract

The crystal structure of the Escherichia coli O2-sensitive C19G [NiFe]-hydrogenase-1 variant shows that the mutation results in a novel FeS cluster, proximal to the Ni–Fe active site. While the proximal cluster of the native O2-tolerant enzyme can transfer two electrons to that site, EPR spectroscopy shows that the modified cluster can transfer only one electron, this shortfall coinciding with O2 sensitivity. Computational studies on electron transfer help to explain how the structural and redox properties of the novel FeS cluster modulate the observed phenotype. [ABSTRACT FROM AUTHOR]

Published
2018
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