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Cloning,over-expression and characterization of an aldo-keto   reductase fromSaccharomyces cerevisiae CICC 1002

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  • College of Biotechnology and Bioengineering,Zhejiang University of Technology,Hangzhou 310014,China

Abstract

The gene encoding an aldo-keto reductase from Saccharomyces cerevisiae CICC 1002  (SceAKR3C1)was cloned and over-expressed in Escherichia coli BL21(DE3).The recombinant   aldo-keto reductase SceAKR3C1was purified by Ni-NTA affinity chromatography and a single   band corresponding to a molecular weight of 38kDa was observed on the SDS-PAGE.The   enzymatic properties were characterized.The optimum pH and temperature of SceAKR3C1were   6.0and 60 ℃,respectively,and the metal ions Co2+ and Ni 2+significantly increased the
enzymatic activity.The substrate spectrum analysis indicated that the recombinant SceAKR3C1   had high activity on vicinal diketones, with a specific activity of 20.53 U/mg using   ketopantolactone as substrate.

Cite this article

YING Xiangxian,GAO Liang,ZHANG Li,MAO Wangwei,ZHAO Man,WANG Zhao . Cloning,over-expression and characterization of an aldo-keto   reductase fromSaccharomyces cerevisiae CICC 1002[J]. Bulletin of Fermentation Science and Technology, 2017 , 46(3) : 129 -133 . DOI: 10.16774/j.cnki.issn.1674-2214.2017.03.001

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