Comparative studies on tetrachloroethene reductive dechlorination mediated by Desulfitobacterium sp. strain PCE-S
- 4 December 1997
- journal article
- research article
- Published by Springer Nature in Archiv für Mikrobiologie
- Vol. 168 (6) , 513-519
- https://doi.org/10.1007/s002030050529
Abstract
Tetrachloroethene reductive dechlorination was studied with cell extracts of a newly isolated, tetrachloroethene-utilizing bacterium, Desulfitobacterium sp. strain PCE-S. Tetrachloroethene dehalogenase mediated the reductive dechlorination of tetrachloroethene and trichloroethene to cis-1,2-dichloroethene with artificial electron donors such as methyl viologen. The chlorinated aromatic compounds tested so far were not reduced. A low-potential electron donor (E 0′ < –0.4 V) was required for tetrachloroethene reduction. The enzyme in its reduced state was inactivated by propyl iodide and reactivated by light, indicating the involvement of a corrinoid in reductive tetrachloroethene dechlorination.Keywords
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