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Co-metabolic Formation of Substituted Phenylacetic Acids by Styrene-degrading Bacteria

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Specialty Biotechnology
Date 2017 Jun 20
PMID 28626693
Citations 8
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Abstract

Some soil bacteria are able to metabolize styrene via initial side-chain oxygenation. This catabolic route is of potential biotechnological relevance due to the occurrence of phenylacetic acid as a central metabolite. The styrene-degrading strains 1CP, ST, and the novel isolates sp. Kp5.2 and sp. CWB2 were investigated with respect to their applicability to co-metabolically produce substituted phenylacetic acids. Isolates were found to differ significantly in substrate tolerance and biotransformation yields. Especially, ST was identified as a promising candidate for the production of several phenylacetic acids. The biotransformation of 4-chlorostyrene with cells of strain ST was shown to be stable over a period of more than 200 days and yielded about 38 mmol g after nearly 350 days. Moreover, 4-chloro-α-methylstyrene was predominantly converted to the ()-enantiomer of the acid with 40% enantiomeric excess.

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Biochemical Characterization of Phenylacetaldehyde Dehydrogenases from Styrene-degrading Soil Bacteria.

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Investigation of the co-metabolic transformation of 4-chlorostyrene into 4-chlorophenylacetic acid in ST.

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