FEMS Microbiol Lett. 2002 Sep 10;214(2):171-6.

Induction of carbofuran oxidation to 4-hydroxycarbofuran by Pseudomonas sp. 50432.

Chaudhry GR, Mateen A, Kaskar B, Sardessai M, Bloda M, Bhatti AR, Walia SK.

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Department of Biological Sciences, Oakland University, Rochester, MI 48309-4401, USA. chaudhry@oakland.edu

Abstract

Pseudomonas sp. 50432 biotransformed a highly toxic pesticide, carbofuran (2,3-dihydro-2,2-dimethylbenzofuran-7-yl methylcarbamate) to 7-phenol (2,3-dihydro-2,2-dimethyl-7-hydroxy benzofuran) and several unknown metabolites. One of the unknown metabolites identified by gas chromatography/mass spectroscopy was 4-hydroxycarbofuran (2,3-dihydro-2,2-dimethyl-4-hydroxybenzofuran-7-yl methylcarbamate). It had a mass (237) similar to 3-hydroxycarbofuran and 5-hydroxycarbofuran but different fragmentation patterns. This is the first report in which an inducible oxidative enzyme, hydroxylase, mediated the conversion of carbofuran to 4-hydroxycarbofuran. A second constitutively synthesized enzyme hyrolase transformed carbofuran to 7-phenol.

PMID:: 12351226; [PubMed - indexed for MEDLINE]

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