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- W1749172628 endingPage "500" @default.
- W1749172628 startingPage "474" @default.
- W1749172628 abstract "Most nitroaromatic compounds are toxic and mutagenic for living organisms, but some microorganisms have developed oxidative or reductive pathways to degrade or transform these compounds. Reductive pathways are based either on the reduction of the aromatic ring by hydride additions or on the reduction of the nitro groups to hydroxylamino and/or amino derivatives. Bacterial nitroreductases are flavoenzymes that catalyze the NAD(P)H-dependent reduction of the nitro groups on nitroaromatic and nitroheterocyclic compounds. Nitroreductases have raised a great interest due to their potential applications in bioremediation, biocatalysis, and biomedicine, especially in prodrug activation for chemotherapeutic cancer treatments. Different bacterial nitroreductases have been purified and their biochemical and kinetic parameters have been determined. The crystal structure of some nitroreductases have also been solved. However, the physiological role(s) of these enzymes remains unclear. Nitroreductase genes are widely spread within bacterial genomes, but are also found in archaea and some eukaryotic species. Although studies on regulation of nitroreductase gene expression are scarce, it seems that nitroreductase genes may be controlled by the MarRA and SoxRS regulatory systems that are involved in responses to several antibiotics and environmental chemical hazards and to specific oxidative stress conditions. This review covers the microbial distribution, types, biochemical properties, structure and regulation of the bacterial nitroreductases. The possible physiological functions and the biotechnological applications of these enzymes are also discussed." @default.
- W1749172628 created "2016-06-24" @default.
- W1749172628 creator A5020143295 @default.
- W1749172628 creator A5031077959 @default.
- W1749172628 creator A5053410178 @default.
- W1749172628 creator A5089031039 @default.
- W1749172628 date "2008-05-01" @default.
- W1749172628 modified "2023-10-17" @default.
- W1749172628 title "Reduction of polynitroaromatic compounds: the bacterial nitroreductases" @default.
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