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Development of enzymatic conversion using Rhodococcus cells expressing heterologous genes

Research Project

Project/Area Number 20K05805
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 38020:Applied microbiology-related
Research InstitutionGifu University

Principal Investigator

YOSHIDA Toyokazu  岐阜大学, 工学部, 教授 (90220657)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords酵素変換 / Rhodococcus / 異種遺伝子発現 / 微生物変換 / イミン還元 / 立体選択的合成 / イミン還元酵素 / 異種発現
Outline of Research at the Start

酵素による物質生産の世界的な成功例は、Rhodococcus属細菌によるアクリルアミド合成であり、工業化に至った要因はRhodococcus属細菌の堅牢な細胞である。近年、Rhodococcus属宿主-ベクター系が開発されたが、効果的に活用した研究はない。本研究では、この宿主-ベクター系を活用し、物理的に強固なRhodococcus属細胞を酵素を用いた物質変換の反応場とする。種々の異種酵素遺伝子の機能発現を検討し、内在のNADPH再生系を活かした物質変換系や有機溶媒耐性を示す細胞特性を利用した物質変換系の構築を図る。

Outline of Final Research Achievements

Rhodococcus host was suitable for expression of heterologous genes with high GC content, and the enzyme maintained stable activity in the host cells. Rhodococcus cells were resistant to organic solvents, and the enzyme expressed in the cells maintained higher activity in reactions in the presence of organic solvents than in the case of the E. coli host. In the conversion of substances by the Rhodococcus host, the enzyme activity remained stable even in a long reaction time, and substrate transformation at high concentrations, which could not be obtained with the E. coli host, was possible.

Academic Significance and Societal Importance of the Research Achievements

ロドコッカス宿主は高GC含量の異種遺伝子の発現に優位であるだけでなく、その細胞は堅牢かつ有機溶媒耐性を示した。従来は大腸菌細胞が汎用されてきたが、ロドコッカス宿主は酵素による物質変換における新たなツールとして位置づけられる。NADPHの再生系を内在していることから、酵素による物質生産という応用面でも利用価値が高いことが判明した。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (4 results)

All 2022 2021 2020

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (2 results)

  • [Journal Article] Improvement of (<i>S</i>)-selective imine reductase GF3546 for the synthesis of chiral cyclic amines2022

    • Author(s)
      Fukawa Yuta、Yoshida Keita、Degura Sayaka、Mitsukura Koichi、Yoshida Toyokazu
    • Journal Title

      Chemical Communications

      Volume: 58 Issue: 95 Pages: 13222-13225

    • DOI

      10.1039/d2cc05116h

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Novel (S)-Selective Hydrolase from Arthrobacter sp. K5 for Kinetic Resolution of Cuclic Amines2021

    • Author(s)
      Yuta Fukawa, Yuta Mizuno, Keisuke Kawade, Koichi Mitsukura, Toyokazu Yoshida
    • Journal Title

      Catalysts

      Volume: 11 Issue: 7 Pages: 809-817

    • DOI

      10.3390/catal11070809

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Enantioselective synthesis of cyclic amines using a novel hydrolases2022

    • Author(s)
      Yuta Fukawa, Yuta Mizuno, Keisuke Kawade, Koichi Mitsukura, Toyokazu Yoshida
    • Organizer
      日本農芸化学会2022年度大会
    • Related Report
      2021 Research-status Report
  • [Presentation] イミン還元酵素の異種発現系を用いたキラルアミン合成2020

    • Author(s)
      府川 裕太、吉田 佳太、満倉 浩一、吉田 豊和
    • Organizer
      第22回生体触媒化学シンポジウム
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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