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Trichloroethylene Biodegradation by a Methane-Oxidizing Bacterium
Open accessAbstract
Trichloroethylene (TCE), a common groundwater contaminant, is a suspected carcinogen that is highly resistant to aerobic biodegradation. An aerobic, methane-oxidizing bacterium was isolated that degrades TCE in pure culture at concentrations commonly observed in contaminated groundwater. Strain 46-1, a type I methanotrophic bacterium, degraded TCE if grown on methane or methanol, producing CO 2 and water-soluble products. Gas chromatography and 14 C radiotracer techniques were used to determine the rate, methane dependence, and mechanism of TCE biodegradation. TCE biodegradation by strain 46-1 appears to be a cometabolic process that occurs when the organism is actively metabolizing a suitable growth substrate such as methane or methanol. It is proposed that TCE biodegradation by methanotrophs occurs by formation of TCE epoxide, which breaks down spontaneously in water to form dichloroacetic and glyoxylic acids and one-carbon products.
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Cited by
Fox, B. G., Borneman, J. G., Wackett, L. P., & Lipscomb, J. D. (1990) · Biochemistry · doi:10.1021/bi00479a013 · Cited by 308
Substrate specificity of soluble methane monooxygenase
Green, J., & Dalton, H. (1989) · Journal of Biological Chemistry · doi:10.1016/s0021-9258(19)84627-6 · Cited by 276
Metadata
- Authors
- Little, C. D., Palumbo, A. V., Herbes, S. E., Lidstrom, M. E., Tyndall, R. L., & Gilmer, P. J.
- Venue
- Applied and Environmental Microbiology
- Publisher
- American Society for Microbiology
- Published
- 1988-04
- Volume
- 54
- Issue
- 4
- Pages
- 951-956
- ISSN
- 0099-2240 (ISSN-L)
- 1098-5336
- OpenAlex
- W1542110490
- Cited by
- 340
- References
- 0
- FWCI
- 31.91
- Type
- journal article
- Language
- en
- Open access
- green
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- Little, C. D., Palumbo, A. V., Herbes, S. E., Lidstrom, M. E., Tyndall, R. L., & Gilmer, P. J. (1988). Trichloroethylene Biodegradation by a Methane-Oxidizing Bacterium. Applied and Environmental Microbiology. https://doi.org/10.1128/aem.54.4.951-956.1988
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