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Dehalogenation in environmental biotechnology
Current Opinion in Biotechnology, 1994During the past year, the field of dehalogenation has seen rapid progress in the identification of novel organisms, the sequencing of new genes, and the delineation of mechanisms for important enzymes. Newly identified anaerobic organisms are beginning to offer insights into a previously obscure, but important, group of bacteria involved in ...
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Tetrachloroethene-dehalogenating bacteria
Folia Microbiologica, 1999Tetrachloroethene is a frequent groundwater contaminant often persisting in the subsurface environments. It is recalcitrant under aerobic conditions because it is in a highly oxidized state and is not readily susceptible to oxidation. Nevertheless, at least 15 organisms from different metabolic groups, viz.
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THE DEHALOGENATION OF DIHALOGENOMETHYLENEBISPHOSPHONATES
Phosphorus and Sulfur and the Related Elements, 1984Abstract Tetraesters of dihalogenomethylenebisphosphonic acids undergo nucleophilic dehalogenation with potassium fluoride or hydroxide in solution in acetonitrile in the presence of [18,6]-crown ether. Fluoride ion is the best nucleophile for dehalogenation and there is no evidence for nucleophilic displacement of halide ion by attack at the central ...
D. W. Hutchinson, G. Semple
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Biochemistry of Catabolic Reductive Dehalogenation
Annual Review of Biochemistry, 2017A wide range of phylogenetically diverse microorganisms couple the reductive dehalogenation of organohalides to energy conservation. Key enzymes of such anaerobic catabolic pathways are corrinoid and Fe–S cluster–containing, membrane-associated reductive dehalogenases.
Maeva, Fincker, Alfred M, Spormann
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Microbial dehalogenation of trichloroacetic acid
World Journal of Microbiology & Biotechnology, 1992A pure bacterial culture and a two-membered mixed culture were isolated that degraded trichloroacetic acid if a second, readily metabolizable substrate was present in the growth medium. Previous doubts over the microbial dehalogenation of trichloroacetic acid (TCA) may be due to its inability to act as a sole carbon and energy source.
A L, Weightman +2 more
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GENETICS AND BIOCHEMISTRY OF DEHALOGENATING ENZYMES
Annual Review of Microbiology, 1994Microorganisms that can utilize halogenated compounds as a growth substrate generally produce-enzymes whose function is carbon-halogen bond cleavage. Based on substrate range, reaction type and gene sequences, the dehalogenating enzymes can be classified in different groups, including hydrolytic dehalogenases, glutathione transferases, monooxygenases ...
D B, Janssen +2 more
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Biocatalysis by Dehalogenating Enzymes
2007This chapter discusses dehalogenase enzymes and its types. The chapter emphasizes on the microbial origin and distribution of these enzymes, their biochemical properties, and their engineering and use in biocatalysis. Dehalogenases comprise a diverse group of enzymes belonging to different phylogenetic and mechanistic classes.
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Biological dehalogenation and halogenation reactions
Chemosphere, 2003A large number of halogenated compounds is produced by chemical synthesis. Some of these compounds are very toxic and cause enormous problems to human health and to the environment. Investigations on the degradation of halocompounds by microorganisms have led to the detection of various dehalogenating enzymes catalyzing the removal of halogen atoms ...
Karl Heinz, van Pée +1 more
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