期刊
PROCESS BIOCHEMISTRY
卷 49, 期 1, 页码 124-129出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.procbio.2013.09.028
关键词
Achromobacter xylosoxidans; MTBE; ETBE; Biodegradation; Cytochrome P450
资金
- Spanish Ministerio de Medio Ambiente [A198/2007/3-01.2]
Achromobacter xylosoxidans MCM2/2/1 was enriched and isolated from gasoline-contaminated soil and was found to degrade ethyl tert-butyl ether (ETBE) and methyl tert-butyl ether (MTBE) by 41.48% and 34.15%, respectively, in 6 days. Furthermore, the effect of MTBE and TBA on the expression of cytochrome P450 (CYP) of A. xylosoxidans MCM2/2/1 was examined. The presence of the CYP gene in this organism was first confirmed by amplification of a putative 350 bp CYP gene fragment followed by identification of the entire gene by genome walking and DNA-sequencing. The identified CYP gene of A. xylosoxidans MCM2/2/1 shares a high similarity of about 88% with the thcB gene of A. xylosoxidans A8. Gene expression studies have shown that the CYP gene is expressed in A. xylosoxidans MCM2/2/1; however, the expression of this gene was altered at different concentrations of MTBE. (C) 2013 Elsevier Ltd. All rights reserved.
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