• Title/Summary/Keyword: protein-engineered epoxide hydrolase

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Enantioselective Hydrolysis for Preparing (S)-Styrene Oxide in Organic Solvents Using Recombinant Escherichia coli Expressing Protein-engineered Epoxide Hydrolase of Mugil cephalus (Mugil cephalus 유래 에폭사이드 가수분해효소를 발현하는 재조합 대장균을 이용한 유기용매에서의 (S)-Styrene Oxide 제조를 위한 입체선택적 가수분해 반응)

  • Lee, Ok Kyung;Lee, Eun Yeol
    • Applied Chemistry for Engineering
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    • v.23 no.6
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    • pp.599-603
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    • 2012

  • The enantioselective hydrolysis of racemic styrene oxide in organic solvents was conducted using a recombinant E. coli expressing protein-engineered Mugil cephalus epoxide hydrolase (McEH). The volumetric total activity of the recombinant E. coli was enhanced 2.2-fold by IPTG induction at a mid-exponential growth phase. Among organic solvents with different log P values, isooctane was chosen based on the high activity and the enantioselectivity of McEH. Some lyoprotectants such as skim milk or sucrose enhanced the McEH activity. Enantiopure (S)-Styrene oxide with a 98% ee was obtained from the racemic styrene oxide with a 53.6% yield based on its theoretical yield in isooctane.

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