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Development of rational metabolic design techniques based on co-utilization of multiple carbon sources for high-yield production of valuable chemicals

Research Project

Project/Area Number 21K14777
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 38020:Applied microbiology-related
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Fujiwara Ryosuke  国立研究開発法人理化学研究所, 環境資源科学研究センター, 基礎科学特別研究員 (60880797)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2022: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2021: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
KeywordsMethylorubrum extorquens / Metabolic engineering / 発酵生産 / 廃グリセロール / メタノール / グリセロール / メバロン酸 / バイオプロダクション / 代謝工学 / 合成生物学 / 大腸菌 / メチロトローフ
Outline of Research at the Start

持続可能な社会に向け、様々な化合物を再生可能資源から生産する技術が求められている。バイオディーゼル燃料を生産する際に副産物として発生する廃グリセロールは、未活用な再生可能資源であり、微生物発酵生産の有望な原料として期待されている。本研究では、メタノール資化性細菌を用いて、廃グリセロール中に含まれるグリセロール及びメタノールから、高付加価値化合物(メバロン酸)を高収率で生産する技術の開発を目指す。

Outline of Final Research Achievements

In order to utilize crude glycerol as a resource, we constructed a metabolically engineered strain of M. extorquens that can simultaneously utilize both methanol and glycerol. By overexpressing the endogenous gene Mext_4066, we succeeded in growing the strain on glycerol as a sole carbon source. In addition, to efficiently utilize the carbon derived from methanol to produce the target product, we disrupted formate dehydrogenase (FDH), which catalyzes a competing reaction. We successfully constructed a quadruple-knockout strain in which four FDH genes were disrupted, and confirmed that formate dehydrogenase activity was lost. However, growth inhibition was caused by the accumulation of formate, suggesting that improvement of formate metabolism is necessary when using methanol as a substrate for bioproduction.

Academic Significance and Societal Importance of the Research Achievements

廃グリセロールは未活用な再生可能資源であり、微生物発酵生産の有望な原料である。本研究では、メタノール資化性細菌M. extorquensを用いて、廃グリセロール中に含まれるグリセロール及びメタノールから、高付加価値化合物を高収率で生産する技術の開発を試みた。まず、M. extorquensにグリセロール資化能を付与した。グリセロールを資化可能にすることで、元来M. extorquensの細胞増殖に必須である、メタノールのCO2酸化経路の破壊が可能となる。この代謝改変により、原料メタノールを全て物質生産に利用することができ、目的生産物収率の飛躍的な向上が期待される。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (5 results)

All 2024 2023 2022

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (1 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Styrene Production in Genetically Engineered Escherichia coli in a Two-Phase Culture2024

    • Author(s)
      Noda Shuhei、Fujiwara Ryosuke、Mori Yutaro、Dainin Mayumi、Shirai Tomokazu、Kondo Akihiko
    • Journal Title

      BioTech

      Volume: 13 Issue: 1 Pages: 2-2

    • DOI

      10.3390/biotech13010002

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hydroxybenzoic Acid Production Using Metabolically Engineered Corynebacterium glutamicum2023

    • Author(s)
      Doke Misa、Kishida Mayumi、Hirata Yuuki、Nakano Mariko、Horita Mayo、Nonaka Daisuke、Mori Yutaro、Fujiwara Ryosuke、Kondo Akihiko、Noda Shuhei、Tanaka Tsutomu
    • Journal Title

      Synthetic Biology and Engineering

      Volume: 1 Issue: 2 Pages: 1-9

    • DOI

      10.35534/sbe.2023.10010

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Caffeic acid production from glucose using metabolically engineered Escherichia coli2023

    • Author(s)
      Sakae Kosuke、Nonaka Daisuke、Kishida Mayumi、Hirata Yuuki、Fujiwara Ryosuke、Kondo Akihiko、Noda Shuhei、Tanaka Tsutomu
    • Journal Title

      Enzyme and Microbial Technology

      Volume: 164 Pages: 110193-110193

    • DOI

      10.1016/j.enzmictec.2023.110193

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] G6P-capturing molecules in the periplasm of Escherichia coli accelerate the shikimate pathway2022

    • Author(s)
      Fujiwara, R., Nakano, M., Hirata, Y., Otomo, C., Nonaka, D., Kawada, S., Nakazawa, H., Umetsu, M., Shirai, T., Noda, S.*, Tanaka, T.*, Kondo, A.
    • Journal Title

      Metabolic Engineering

      Volume: 72 Pages: 68-81

    • DOI

      10.1016/j.ymben.2022.03.002

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] Metabolic Engineering of Methylorubrum extorquens for Bioproduction of Aromatic Compounds from C1-C2 Compounds2023

    • Author(s)
      Ryosuke Fujiwara , Tomokazu Shirai , Akihiko Kondo
    • Organizer
      The 35th Annual Meeting of the Thai Society for Biotechnology and International Conference
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research

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Published: 2021-04-28   Modified: 2025-01-30  

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