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Nitrile hydratase from Mesorhizobium sp. F28 and its potential for nitrile biotransformation

Paper ID Volume ID Publish Year Pages File Format Full-Text
35754 45105 2008 7 PDF Available
Title
Nitrile hydratase from Mesorhizobium sp. F28 and its potential for nitrile biotransformation
Abstract

Mesorhizobium sp. F28 was isolated from a wastewater treatment system in a polyacrylonitrile (PAN) fibre factory for its ability to convert acrylonitrile by a nitrile hydratase (NHase)–amidase (AMase) system. This strain completely degraded acrylonitrile at concentrations as high as 18.4 mM, and exhibited 192 U mg−1 dcw NHase activity for the conversion of acrylonitrile to acrylamide. The cobalt-containing NHase purified from the strain F28 was moderately thermostable, keeping full activity up to 45 °C; it also had optimum activity between pH 7.0 and 7.5. Acrylonitrile, propionitrile, isobutyronitrile, and benzonitrile were good substrates for the NHase of Mesorhizobium sp. F28. The affinity of the NHase for acrylonitrile (Km = 0.53 mM) was greater than that of bacteria mentioned by other researchers before.

Keywords
Acrylamide; Acrylonitrile; Biotransformation; Mesorhizobium sp.; Nitrile; Nitrile hydratase
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 43, Issue 12, December 2008, Pages 1391–1397
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Price was $35.95
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