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Applied and Environmental Microbiology, July 2004, p. 4398-4401, Vol. 70, No. 7
0099-2240/04/$08.00+0     DOI: 10.1128/AEM.70.7.4398-4401.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Degradation of Alkyl Ethers, Aralkyl Ethers, and Dibenzyl Ether by Rhodococcus sp. Strain DEE5151, Isolated from Diethyl Ether-Containing Enrichment Cultures

Yong-Hak Kim{dagger} and Karl-Heinrich Engesser*

Institut für Siedlungswasserbau, Wassergüte- und Abfallwirtschaft, Universität Stuttgart, D-70569 Stuttgart (Büsnau), Germany

Received 8 September 2003/ Accepted 24 March 2004

ABSTRACT

Twenty strains isolated from sewage sludge were found to degrade various ethers, including alkyl ethers, aralkyl ethers, and dibenzyl ether. In Rhodococcus strain DEE5151, induction of ether degradation needed substrates exhibiting at least one unsubstituted C{alpha}-methylene moiety as the main structural prerequisite. The cleavage reaction observed with anisole, phenetole, and dibenzyl ether indicates that the initial oxidation occurs at such respective C{alpha} positions. Diethyl ether-induced strain DEE5151 degraded dibenzyl ether via intermediately accumulated benzoic acid. Phenetole seems to be subject also to another ether-cleaving enzyme. Other strains of this group showed different enzymatic activities towards the substrate classes investigated.

* Corresponding author. Mailing address: Institut für Siedlungswasserbau, Wassergüte- und Abfallwirtschaft, Universität Stuttgart, Abteilung Biologische Abluftreinigung, Bandtäle 2, D-70569 Stuttgart (Büsnau), Germany. Phone: 49-711-685 3734. Fax: 49-711-685 3729. E-mail: karl-h.engesser{at}iswa.uni-stuttgart.de.

FOOTNOTES

{dagger} Present address: Biotechnology Research Institute, NRC Canada, Montreal, Quebec H4P 2R2, Canada.

Applied and Environmental Microbiology, July 2004, p. 4398-4401, Vol. 70, No. 7
0099-2240/04/$08.00+0     DOI: 10.1128/AEM.70.7.4398-4401.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • McClay, K., Schaefer, C. E., Vainberg, S., Steffan, R. J. (2007). Biodegradation of Bis(2-Chloroethyl) Ether by Xanthobacter sp. Strain ENV481. Appl. Environ. Microbiol. 73: 6870-6875 [Abstract] [Full Text]  


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