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Chemphyschem. 2010 Apr 26;11(6):1127-40. doi: 10.1002/cphc.200900950.

Intermediates in the catalytic cycle of [NiFe] hydrogenase: functional spectroscopy of the active site.

Author information

1
Max-Planck Institut für Bioanorganische Chemie, Stiftstrasse 34-36, 45470, Mülheim an der Ruhr, Germany.

Abstract

The [NiFe] hydrogenase from the anaerobic sulphate reducing bacterium Desulfovibrio vulgaris Miyazaki F is an excellent model for constructing a mechanism for the function of the so-called 'oxygen-sensitive' hydrogenases. The present review focuses on spectroscopic investigations of the active site intermediates playing a role in the activation/deactivation and catalytic cycle of this enzyme as well as in the inhibition by carbon monoxide or molecular oxygen and the light-sensitivity of the hydrogenase. The methods employed include magnetic resonance and vibrational (FTIR) techniques combined with electrochemistry that deliver information about details of the geometrical and electronic structure of the intermediates and their redox behaviour. Based on these data a mechanistic scheme is developed.

PMID:
20301175
DOI:
10.1002/cphc.200900950
[Indexed for MEDLINE]

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