Crossref journal-article
Wiley
European Journal of Biochemistry (311)
Abstract

The hydrogenases of Desulfovibrio vulgaris and Megasphaera elsdenii are compared with respect to some of their physical properties. In addition to Fe the only metal ions that are present in significant amounts are Ni and Cu. From cluster extrusion experiments it follows that the D. vulgaris enzyme contains three 4 Fe‐4 S clusters, while M. elsdenii hydrogenase only releases part of its Fe‐S clusters. The resting D. vulgaris enzyme shows only a small 3 Fe‐xS type of EPR signal (maximum 5% electron equivalent). This amount can be increased to approximately 25% by treatment with ferricyanide, with a concomitant large decrease in activity. The M. elsdenii enzyme shows in its oxidized state a normal Hipip (high‐potential iron‐sulphur protein) type of EPR spectrum. After a reduction/oxidation cycle the D. vulgaris enzyme also shows a weak Hipip type of EPR spectrum. In the reduced state both enzymes show complex spectra. By integration of those spectra it is shown that 1.5 electron equivalents are present. The complex spectra do not arise from nuclear hyperfine interactions but are partially due to electron spin interactions. It is proposed that the spectrum of reduced D. vulgaris hydrogenase consists of a sum of three different ferredoxin‐like spectra.

Bibliography

GRANDE, H. J., DUNHAM, W. R., AVERILL, B., VAN DIJK, C., & SANDS, R. H. (1983). Electron paramagnetic resonance and other properties of hydrogenases isolated from Desulfovibrio vulgaris (strain Hildenborough) and Megasphaera elsdenii. European Journal of Biochemistry, 136(1), 201–207. Portico.

Authors 5
  1. Hans J. GRANDE (first)
  2. William R. DUNHAM (additional)
  3. Bruce AVERILL (additional)
  4. Cees VAN DIJK (additional)
  5. Richard H. SANDS (additional)
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Dates
Type When
Created 20 years, 5 months ago (March 3, 2005, 5:46 p.m.)
Deposited 1 year, 9 months ago (Nov. 23, 2023, 4:42 p.m.)
Indexed 1 year, 2 months ago (June 26, 2024, 8:54 p.m.)
Issued 41 years, 10 months ago (Oct. 1, 1983)
Published 41 years, 10 months ago (Oct. 1, 1983)
Published Online 20 years, 5 months ago (March 3, 2005)
Published Print 41 years, 10 months ago (Oct. 1, 1983)
Funders 0

None

@article{GRANDE_1983, title={Electron paramagnetic resonance and other properties of hydrogenases isolated from Desulfovibrio vulgaris (strain Hildenborough) and Megasphaera elsdenii}, volume={136}, ISSN={1432-1033}, url={http://dx.doi.org/10.1111/j.1432-1033.1983.tb07727.x}, DOI={10.1111/j.1432-1033.1983.tb07727.x}, number={1}, journal={European Journal of Biochemistry}, publisher={Wiley}, author={GRANDE, Hans J. and DUNHAM, William R. and AVERILL, Bruce and VAN DIJK, Cees and SANDS, Richard H.}, year={1983}, month=oct, pages={201–207} }