专利号:US-12428656-B2 优先权日:2020-02-28 标题 :Nitrilase mutant and application thereof in the synthesis of 1-cyanocyclohexyl acetic acid 发明人:XUE YAPING; XIONG NENG; LI QIAN; ZHENG YUGUO 权利人:UNIV ZHEJIANG TECHNOLOGY 摘要:The present invention provides a nitrilase mutant and application thereof in the synthesis of 1-cyanocyclohexyl acetic acid, the nitrilase mutant is obtained by mutating one or two of the amino acids at position 180 and 205 of the amino acid sequence shown in SEQ ID No. 2. In the present invention, by semi-rational design and protein molecular modification, the specific enzyme activity of the nitrilase double mutant AcN-G180D/A205C was increased by up to 1.6 folds, and the conversion rate>99%. And the reaction time was shortened to a quarter of the original using the recombinant Escherichia coli containing the nitrilase mutant to hydrolyze 1-cyanocyclohexylacetonitrile at high temperature (50° C.). Therefore, the mutants obtained by the present invention have a good application prospect in efficiently catalyzing 1-cyanocyclohexylacetonitrile to synthesize gabapentin intermediate, 1-cyanocyclohexyl acetic acid.
专利号:US-2022372531-A1 优先权日:2020-02-28 标题:A nitrilase mutant and application thereof in the synthesis of 1-cyanocyclohexyl acetic acid
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合成参考文献
参考文献:10.1002/bdd.305 摘要:Mehmedagic A, Verite P, Menager S, Tharasse C, Chabenat C, Andre D, Lafont O. Investigation of the effects of concomitant caffeine administration on the metabolic disposition of pyrazinamide in rats. Biopharm Drug Dispos. 2002 Jul;23(5):191–5. doi: 10.1002/bdd.305.