Degradation of a Nonylphenol Single Isomer by Sphingomonas sp. Strain TTNP3 Leads to a Hydroxylation-Induced Migration Product 鞘氨醇单胞菌菌株ttnp3降解壬基酚单异构体.pdfVIP

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Degradation of a Nonylphenol Single Isomer by Sphingomonas sp. Strain TTNP3 Leads to a Hydroxylation-Induced Migration Product 鞘氨醇单胞菌菌株ttnp3降解壬基酚单异构体.pdf

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APPLIED AND ENVIRONMENTAL MICROBIOLOGY, Nov. 2004, p. 6897–6900 Vol. 70, No. 11 0099-2240/04/$08.00 0 DOI: 10.1128/AEM.70.11.6897–6900.2004 Copyright © 2004, American Society for Microbiology. All Rights Reserved. Degradation of a Nonylphenol Single Isomer by Sphingomonas sp. Strain TTNP3 Leads to a Hydroxylation-Induced Migration Product P. F. X. Corvini,1,2* R. J. W. Meesters,3 A. Scha¨ffer,1,2 H. F. Schro¨der,3 R. Vinken,1 and J. Hollender4 Department of Biology V 1 and Department of Environmental Engineering (ISA),3 RWTH Aachen University, and Institute of Hygiene and Environmental Health, University Hospital-RWTH Aachen,4 Aachen, and Fraunhofer IME, Schmallenberg,2 Germany Received 16 April 2004/Accepted 7 June 2004 Sphingomonas sp. strain TTNP3 degrades 4(3,5-dimethyl-3-heptyl)-phenol and unidentiﬁed metabolites that were described previously. The chromatographic analyses of the synthesized reference compound and the metabolites led to their identiﬁcation as 2(3,5-dimethyl-3-heptyl)-1,4-benzenediol. This ﬁnding indicates that the nonylphenol metabolism of this bacterium involves unconventional degradation pathways where an NIH shift mechanism occurs. Nonylphenol (NP) is a ubiquitous pollutant which mainly in the intracellular fraction and were shown to be different results from the biodegradation of widely used NP polyethoxy- from 4(3,5-dimethyl-3-heptyl)-catechol (Fig. 1b) and 4(3,5- late surfactants, and it is well known for its endocrine system- dimethyl-3-heptyl)-reso