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Establishment of a D-amino acid fermentation method using oligotroph

Research Project

Project/Area Number 19K15743
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 38020:Applied microbiology-related
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

Akita Hironaga  国立研究開発法人産業技術総合研究所, 材料・化学領域, 主任研究員 (10738024)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
KeywordsD-アミノ酸 / D-アラニン / 発酵生産 / 新種細菌 / meso-ジアミノピメリン酸脱水素酵素 / ピルビン酸 / 大腸菌 / 貧栄養耐性細菌 / 新亜種提唱 / Paenibacillus / 遺伝子組み換え / Deinococcus / 新種提唱 / 発酵 / バイオマス
Outline of Research at the Start

本研究では,①E. oligotrophica CCA6株に内在する数種の遺伝子を破壊または制御し,ピルビン酸高生産株を作製する.次いで,②得られたピルビン酸高生産株内にグルコース依存的に遺伝子発現可能なグルコース誘導型外来遺伝子発現システムを構築し,D-アミノ酸生産能を付与してD-アミノ酸生産株を作製する .さらに,③13C代謝フラックス解析に基づいてD-アミノ酸の生合成経路を最適化し,D-アミノ酸生産能を強化する.最終的には,④非可食性バイオマスである廃糖蜜を培地に利用して,D-アミノ酸を発酵生産する.

Outline of Final Research Achievements

To develop a D-amino acid-producing strain, I was planning to use Enterobacter oligotrophicus as the starting material. However, I could not establish a genetic engineering method for E. oligotrophicus, I used a pyruvate-producing Escherichia coli strain, which had been prepared in my previous study. Although the D-amino acid-producing strain has not yet developed, I was able to prepare the groundwork necessary for the development, including the production of a pyruvate-producing E. coli strain with gene disruption of D-amino acid metabolizing enzyme genes.
On the other hand, to isolate bacteria useful for fermentative production of D-amino acids, screening for environmental soil samples was carried out in parallel, and bacteria including novel species were isolated and identified.

Academic Significance and Societal Importance of the Research Achievements

近年、医薬品やヘルスケア製品を中心にD-アミノ酸の需要が急速に高まっています。一方、複数種の酵素を利用した多段階反応によって合成されているため、D-アミノ酸は高価であり、高純度D-アミノ酸の量産が課題となっています。D-アミノ酸の発酵生産法の開発は、高純度D-アミノ酸の安価な供給を可能にする可能性があり、本研究により発酵生産法の開発に必要な素地を準備できました。従って、これらの研究成果は、社会的意義を有すると考えられます。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (5 results)

All 2021 2020

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 4 results)

  • [Journal Article] Draft genome sequence of Klebsiella pneumoniae subsp. pneumoniae CCI2 isolated from leaf soil2021

    • Author(s)
      Hironaga Akita, Yuya Itoiri, Noriyo Takeda, Zen-Ichiro Kimura, Hiroyuki Inoue, Akinori Matsushika
    • Journal Title

      Microbiol Resour Announc

      Volume: 10 Issue: 25

    • DOI

      10.1128/mra.00343-21

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A simple method for the screening, isolation, and identification of novel bacteria2021

    • Author(s)
      Hironaga Akita, Zen-Ichiro Kimura,
    • Journal Title

      Journal of Environmental Biotechnology

      Volume: in press

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Paenibacillus glycanilyticus subsp. hiroshimensis subsp. nov., isolated from leaf soil collected in Japan2021

    • Author(s)
      Akita Hironaga、Itoiri Yuya、Takeda Noriyo、Matsushika Akinori、Kimura Zen-ichiro
    • Journal Title

      Archives of Microbiology

      Volume: 203 Issue: 4 Pages: 1787-1793

    • DOI

      10.1007/s00203-020-02166-6

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Draft Genome Sequence of Enterobacter oligotrophicus CCA3, Isolated from Leaf Soil2021

    • Author(s)
      Akita Hironaga、Itoiri Yuya、Takeda Noriyo、Kimura Zen-ichiro、Inoue Hiroyuki、Matsushika Akinori
    • Journal Title

      Microbiology Resource Announcements

      Volume: 10 Issue: 4

    • DOI

      10.1128/mra.01289-20

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Deinococcus kurensis sp. nov., isolated from pond water collected in Japan2020

    • Author(s)
      Akita Hironaga、Itoiri Yuya、Ihara Sota、Takeda Noriyo、Matsushika Akinori、Kimura Zen-ichiro
    • Journal Title

      Archives of Microbiology

      Volume: in press Issue: 7 Pages: 1757-1762

    • DOI

      10.1007/s00203-020-01845-8

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access

URL: 

Published: 2019-04-18   Modified: 2024-12-25  

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