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Iranian Journal of Biotechnology، جلد ۱۷، شماره ۲، صفحات ۲۱-۲۹
عنوان فارسی Enhancement of Soluble Expression and Biochemical Characterization of Two Epoxide Hydrolases from Bacillus
چکیده فارسی مقاله Background: Enantiopure epoxides are important intermediates in the synthesis of high-value chiral chemicals. Epoxide hydrolases have been exploited in biocatalysis for kinetic resolution of racemic epoxides to produce enantiopure epoxides and vicinal diols. It is necessary to obtain sufficient stable epoxide hydrolases with high enantioselectivity to meet the requirements of industry.
Objectives: Enhancement of soluble expression and biochemical characterization of epoxide hydrolases from Bacillus pumilus and B. subtilis.
Material and Methods: Homologous genes encoding epoxide hydrolases from B. pumilus and B. subtilis were cloned and expressed in Escherichia coli. The recombinant epoxide hydrolases were characterized biochemically.
Results: Low temperature induction of expression and aC-terminal-fused His-tag enhanced soluble expression of the epoxide hydrolases from the two Bacillus species in E. coli. These epoxide hydrolases could hydrolyze various epoxide substrates, with stereoselectivity toward some epoxides such as styrene oxide and glycidyl tosylate.
Conclusions: The position of the His-tag and the induction temperature were found to play a vital role in soluble expression of these two epoxide hydrolases in E. coli. In view of their catalytic properties, the epoxide hydrolases from Bacillus have potential for application in kinetic resolution of some epoxides to prepare enantiopure epoxides and vicinal diols.
کلیدواژه‌های فارسی مقاله Bacillus،، Epoxide Hydrolase،، Hydrolysis،
عنوان انگلیسی Enhancement of Soluble Expression and Biochemical Characterization of Two Epoxide Hydrolases from Bacillus
چکیده انگلیسی مقاله Background: Enantiopure epoxides are important intermediates in the synthesis of high-value chiral chemicals. Epoxide hydrolases have been exploited in biocatalysis for kinetic resolution of racemic epoxides to produce enantiopure epoxides and vicinal diols. It is necessary to obtain sufficient stable epoxide hydrolases with high enantioselectivity to meet the requirements of industry.
Objectives: Enhancement of soluble expression and biochemical characterization of epoxide hydrolases from Bacillus pumilus and B. subtilis.
Material and Methods: Homologous genes encoding epoxide hydrolases from B. pumilus and B. subtilis were cloned and expressed in Escherichia coli. The recombinant epoxide hydrolases were characterized biochemically.
Results: Low temperature induction of expression and aC-terminal-fused His-tag enhanced soluble expression of the epoxide hydrolases from the two Bacillus species in E. coli. These epoxide hydrolases could hydrolyze various epoxide substrates, with stereoselectivity toward some epoxides such as styrene oxide and glycidyl tosylate.
Conclusions: The position of the His-tag and the induction temperature were found to play a vital role in soluble expression of these two epoxide hydrolases in E. coli. In view of their catalytic properties, the epoxide hydrolases from Bacillus have potential for application in kinetic resolution of some epoxides to prepare enantiopure epoxides and vicinal diols.
کلیدواژه‌های انگلیسی مقاله Bacillus, Epoxide Hydrolase, Hydrolysis
نویسندگان مقاله Li-Ying Wu |
Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University; Sichuan Key Laboratory of Molecular Biology and Biotechnology, Chengdu 610065, Sichuan, P. R. China

Jun-Jie Xu |
Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University; Sichuan Key Laboratory of Molecular Biology and Biotechnology, Chengdu 610065, Sichuan, P. R. China

Pan Xu |
College of Life Sciences, Sichuan Normal University, Chengdu 610101, Sichuan, P. R. China

Bin Yong |
College of Life Sciences, Sichuan Normal University, Chengdu 610101, Sichuan, P. R. China

Hong Feng |
Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University; Sichuan Key Laboratory of Molecular Biology and Biotechnology, Chengdu 610065, Sichuan, P. R. China

نشانی اینترنتی http://www.ijbiotech.com/article_85189_170a01e651df3f6a044304c7648bc892.pdf
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