ArticleJournal of industrial microbiology & biotechnology2010
Enantioselective hydrolysis of (R)-2, 2-dimethylcyclopropane carboxamide by immobilized cells of an R-amidase-producing bacterium, Delftia tsuruhatensis CCTCC M 205114, on an alginate capsule carrier.
Article in Journal of industrial microbiology & biotechnology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 22 citations in OpenAlex.
- Microbial amidases: Characterization, advances and biotechnological applications.Biotechnology notes (Amsterdam, Netherlands) · 2025Review
- Enantioselective Resolution of (R,S)-Carvedilol to (S)-(-)-Carvedilol by Biocatalysts.Natural products and bioprospecting · 2017Article
- Cloning and Characterization of a Novel Esterase from Rhodococcus sp. for Highly Enantioselective Synthesis of a Chiral Cilastatin Precursor.Applied and environmental microbiology · 2014Article
- Screening, cultivation, and biocatalytic performance of Rhodococcus boritolerans FW815 with strong 2,2-dimethylcyclopropanecarbonitrile hydratase activity.Journal of industrial microbiology & biotechnology · 2012Article
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Authors and funding
9 authors at 1 institution in 1 country.
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Abstract
Immobilized cells of Delftia tsuruhatensis CCTCC M 205114 harboring R-amidase were applied in asymmetric hydrolysis of (R)-2, 2-dimethylcyclopropane carboxamide (R - 1) from racemic (R, S)-2, 2-dimethylcyclopropane carboxamide to accumulate (S)-2, 2-dimethylcyclopropane carboxamide (S - 1). Maximum R-amidase activity of 13.1 U/g wet cells (0.982 U/g beads) was obtained under conditions of 3% sodium alginate, 2.5% CaCl(2), 15 h crosslinking and 2 mm bead size, which was 53.9% of that of free cells (24.3 U/g wet cells). In addition, characterization of the immobilized cells was examined. The optimum R - 1 hydrolysis conditions were identified as follows: substrate concentration 10 mM, pH 8.5, temperature 35 degrees C and time course 40 min. Under optimum conditions, the maximum yield and enantiomeric excess of (R)-2, 2-dimethylcyclopropanecarboxylic acid were 49.5% and >99%, respectively. This afforded S - 1 with a yield >49% and an e.e. of 97.7%. With good operational stability and excellent enanotioselectivity, the immobilized cells could be potentially utilized in industrial production of S - 1.
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