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Recent advances in protein engineering and biotechnological applications of glutathione transferases 总被引:1,自引:0,他引:1
Glutathione transferases (GSTs, EC 2.5.1.18) are a widespread family of enzymes that play a central role in the detoxification, metabolism, and transport or sequestration of endogenous or xenobiotic compounds. During the last two decades, delineation of the important structural and catalytic features of GSTs has laid the groundwork for engineering GSTs, involving both rational and random approaches, aiming to create new variants with new or altered properties. These approaches have expanded the usefulness of native GSTs, not only for understanding the fundamentals of molecular detoxification mechanisms, but also for the development medical, analytical, environmental, and agricultural applications. This review article attempts to summarize successful examples and current developments on GST engineering, highlighting in parallel the recent knowledge gained on their phylogenetic relationships, structural/catalytic features, and biotechnological applications. 相似文献
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Scott KM Sievert SM Abril FN Ball LA Barrett CJ Blake RA Boller AJ Chain PS Clark JA Davis CR Detter C Do KF Dobrinski KP Faza BI Fitzpatrick KA Freyermuth SK Harmer TL Hauser LJ Hügler M Kerfeld CA Klotz MG Kong WW Land M Lapidus A Larimer FW Longo DL Lucas S Malfatti SA Massey SE Martin DD McCuddin Z Meyer F Moore JL Ocampo LH Paul JH Paulsen IT Reep DK Ren Q Ross RL Sato PY Thomas P Tinkham LE Zeruth GT 《PLoS biology》2006,4(12):e383
Presented here is the complete genome sequence of Thiomicrospira crunogena XCL-2, representative of ubiquitous chemolithoautotrophic sulfur-oxidizing bacteria isolated from deep-sea hydrothermal vents. This gammaproteobacterium has a single chromosome (2,427,734 base pairs), and its genome illustrates many of the adaptations that have enabled it to thrive at vents globally. It has 14 methyl-accepting chemotaxis protein genes, including four that may assist in positioning it in the redoxcline. A relative abundance of coding sequences (CDSs) encoding regulatory proteins likely control the expression of genes encoding carboxysomes, multiple dissolved inorganic nitrogen and phosphate transporters, as well as a phosphonate operon, which provide this species with a variety of options for acquiring these substrates from the environment. Thiom. crunogena XCL-2 is unusual among obligate sulfur-oxidizing bacteria in relying on the Sox system for the oxidation of reduced sulfur compounds. The genome has characteristics consistent with an obligately chemolithoautotrophic lifestyle, including few transporters predicted to have organic allocrits, and Calvin-Benson-Bassham cycle CDSs scattered throughout the genome. 相似文献
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