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- Title
Effect of Deuteration on the Activity of Methanol Dehydrogenase from Methylophilus sp. B-7741.
- Authors
Pshenichnikova, A. B.; Nevo, A. N. S.; Volkova, E. V.; Skladnev, D. A.; Shvets, V. I.
- Abstract
We studied the effect of deuterium oxide present in the medium on the activity of methanol dehydrogenase (EC 1.1.99.8) from methylotrophic bacteria Methylophilus sp. B-7741. Methanol dehydrogenase activity in extracts of the biomass obtained in a highly deuterated medium (2H-enzyme) was 34–47% of the enzyme activity in the control biomass (1H-enzyme), which depended on the reaction conditions. The isotopic effects of substrate deuterium (methanol) for 1H-enzyme and 2H-enzyme were 1.37 ± 0.05 and 1.38 ± 0.01, respectively. We revealed for the first time the reverse isotopic effect of solvent deuterium in the reaction catalyzed by methanol dehydrogenase (0.80 ± 0.02 and 0.60 ± 0.01 for 1H-enzyme and 2H-enzyme, respectively).
- Subjects
DEUTERIUM oxide; DEHYDROGENASES; METHANOL; BIOMASS; ENZYMES; EXTRACTS
- Publication
Applied Biochemistry & Microbiology, 2004, Vol 40, Issue 1, p18
- ISSN
0003-6838
- Publication type
Article
- DOI
10.1023/B:ABIM.0000010344.54860.72