Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
71005 | Journal of Molecular Catalysis B: Enzymatic | 2008 | 7 Pages |
Abstract
A semi-purified nitrile hydratase from Rhodococcus erythropolis A4 was applied to biotransformations of 3-oxonitriles 1a–4a, 3-hydroxy-2-methylenenitriles 5a–7a, 4-hydroxy-2-methylenenitriles 8a–9a, 3-hydroxynitriles 10a–12a and 3-acyloxynitrile 13a into amides 1b–13b. Cross-linked enzyme aggregates (CLEAs) with nitrile hydratase and amidase activities (88% and 77% of the initial activities, respectively) were prepared from cell-free extract of this microorganism and used for nitrile hydration in presence of ammonium sulfate, which selectively inhibited amidase activity. The genes nha1 and nha2 coding for α and β subunits of nitrile hydratase were cloned and sequenced.
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Authors
David Kubáč, Ondřej Kaplan, Veronika Elišáková, Miroslav Pátek, Vojtěch Vejvoda, Kristýna Slámová, Andrea Tóthová, Marielle Lemaire, Estelle Gallienne, Sabine Lutz-Wahl, Lutz Fischer, Marek Kuzma, Helena Pelantová, Sander van Pelt, Jean Bolte,