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Rapid and reversible reactions of [NiFe]-hydrogenases with sulfide.

Abstract:

Rapid and reversible binding of sulfide to [NiFe]-hydrogenases (particularly the enzyme from Desulfovibrio vulgaris) under weakly acidic conditions (pH 6) has been studied by protein film voltammetry, which tracks the formation of different species as a function of potential. Sulfide (most likely entering as H2S) rapidly attacks the active site during H2 oxidation. The inactive adduct is formed (and is stable) only at potentials substantially more positive than the comparable species formed w...

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Publication status:
Published

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Publisher copy:
10.1021/ja061732f

Authors


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Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Inorganic Chemistry
Belsey, NA More by this author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Inorganic Chemistry
Journal:
Journal of the American Chemical Society
Volume:
128
Issue:
23
Pages:
7448-7449
Publication date:
2006-06-05
DOI:
EISSN:
1520-5126
ISSN:
0002-7863
URN:
uuid:2bd175b9-0491-4ac4-a1a5-cf933fd7873c
Source identifiers:
33496
Local pid:
pubs:33496

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