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Analysis of signaling network controlling the expression of carbohydrate-degrading enzyme genes in filamentous fungi

Research Project

Project/Area Number 19K05777
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 InstitutionOsaka Prefecture University

Principal Investigator

Tani Shuji  大阪府立大学, 生命環境科学研究科, 准教授 (80405357)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords遺伝子発現制御 / 糸状菌 / 酵素生産 / 遺伝子発現 / 糖質加水分解酵素 / ClbR / Uge5 / dppIV / SrpkF / 情報伝達ネットワーク / Aspergillus aculeatus / タンパク質間相互作用 / セルラーゼ
Outline of Research at the Start

糸状菌が生産する有用酵素を利活用するには、種々の基質特異性を有す複数の酵素を包括的に高生産する技術を開発する必要がある。これまでに申請者は、A. aculeatusにおける多糖分解酵素生産を正に調節する新規制御因子を複数同定し、制御因子が複数の因子と相互作用して機能すること明らかにした。そこで本研究では、申請者らが同定した制御因子の相互作用因子を網羅的に探索し、同定した因子の機能を解明すると共に、同定した制御因子を機能改変し、種々の基質特異性を有す有用酵素の包括的な高生産技術を開発する事を目指す。

Outline of Final Research Achievements

The aim of this study was to elucidate the regulation mechanism of carbohydrate-degrading enzyme genes in Aspergillus aculeatus, especially to analyze the mode of action of four novel factors, ClbR, Uge5, DppIV, and SrpkF. The research was conducted in the following areas. We have restricted the domain in ClbR involved in the transcription activation. We revealed that Uge5, which has UDP-glucose 4-epimerase activity, is involved in the regulation of gene expression of mannanase as well as cellulolytic enzymes, that the dipeptidyl activity of DppIV is involved in the regulation of cellulase gene expression, and that the cellulase gene expression is regulated by the dipeptidyl activity of DppIV. We also found that modification of the putative phosphorylation domain of SrpkF enhanced the enzyme expression level in A. aculeates.

Academic Significance and Societal Importance of the Research Achievements

植物細胞壁を構成する多糖を酵素により分解し、得られた糖から有用物質を生産する技術は、持続可能な社会基盤を構築することに資する技術として注目されている。この技術革新に向けて改善すべき課題の一つに酵素生産コストの削減があげられる。本研究でたんぱく質リン酸化酵素の機能を改変することで、酵素生産を誘導するための物質がない条件化でも酵素生産を促進することを可能にした。本研究成果は、酵素生産コスト削減に資するものである。

Report

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

    (14 results)

All 2022 2021 2020 2019 Other

All Journal Article (3 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (8 results) (of which Int'l Joint Research: 1 results) Remarks (3 results)

  • [Journal Article] Serine-arginine protein kinase-like protein, SrpkF, stimulates both cellobiose-responsive and D-xylose-responsive signaling pathways in Aspergillus aculeatus.2022

    • Author(s)
      Katayama R, Kobayashi N, Kawaguchi T, Tani S.
    • Journal Title

      Current Genetics

      Volume: 68 Issue: 1 Pages: 143-152

    • DOI

      10.1007/s00294-021-01207-x

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Biogenic manganese oxides combined with 1-hydroxybenzotriazol and an Mn(II)-oxidizing enzyme from Pleosporalessp. Mn1 oxidize 3,4-dimethoxytoluene to yield 3,4-dimethoxybenzaldehyde2021

    • Author(s)
      Yoshimura Y, Tani S, Fujiwara M, Nakamura M, Sumitani J, Kawaguchi T
    • Journal Title

      Journal of Biscience and Bioengineering

      Volume: 131 Issue: 5 Pages: 475-482

    • DOI

      10.1016/j.jbiosc.2020.12.014

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A component of the septation initiation network complex, AaSepM, is involved in multiple cellulose-responsive signaling pathways in Aspergillus aculeatus2021

    • Author(s)
      Tsumura Ryosuke、Sawada Kazumi、Kunitake Emi、Sumitani Jun-ichi、Kawaguchi Takashi、Tani Shuji
    • Journal Title

      Applied Microbiology and Biotechnology

      Volume: 105 Issue: 4 Pages: 1535-1546

    • DOI

      10.1007/s00253-021-11110-7

    • Related Report
      2020 Research-status Report
  • [Presentation] Aspergillus aculeatus SrpkFの1アミノ酸置換による非誘導条件下におけるセルラーゼ遺伝子発現の亢進2022

    • Author(s)
      源健太朗、炭谷順一、川口剛司、谷修治
    • Organizer
      日本農芸化学会2022年度大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 糸状菌Aspergillus aculeatus における酸化ストレス応答へ のdipeptidyl peptidase IV の寄与2021

    • Author(s)
      森孝輔、炭谷順一、川口剛司、谷修治
    • Organizer
      日本生物工学会第73回大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Elucidation of the morphogenetic mechanism of Aspergillus aculeatus serine-arginine protein kinase-like protein, SrpkF2020

    • Author(s)
      源健太朗, 小林夏実, 谷修治, 炭谷順一, 川口剛司
    • Organizer
      糸状菌分子生物学研究会若手の会
    • Related Report
      2020 Research-status Report
  • [Presentation] 糸状菌 Aspergillus aculeatus における uge5 破壊はカーボンカタボライト抑制を解除する2020

    • Author(s)
      谷 修治, 角谷 朝香, 炭谷 順一,川口 剛司
    • Organizer
      日本農芸化学会2020年度大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Aspergillus aculeatus SepMを介したセルラーゼ遺伝子発現制御機構の解明2019

    • Author(s)
      澤田 和美, 津村亮介, 炭谷 順一, 谷 修治, 川口 剛司
    • Organizer
      セルラーゼ研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] Aspergillus aculeatus における ManR を介した選択的遺伝子発現制御に関わる転写因子の探索2019

    • Author(s)
      角谷 朝香, 炭谷 順一, 谷 修治, 川口 剛司
    • Organizer
      第71回日本生物工学会大会
    • Related Report
      2019 Research-status Report
  • [Presentation] SrpkF participates in the early phase of induction in response to cellulosic carbon sources in Aspergillus aculeatus2019

    • Author(s)
      小林夏実、片山涼介、炭谷順一、谷修治、川口剛司
    • Organizer
      Asian Mycology Congress 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Aspergillus aculeatus SepMの形態形成およびcell wall integrity 経路への関与2019

    • Author(s)
      澤田 和美, 津村亮介, 炭谷 順一, 谷 修治, 川口 剛司
    • Organizer
      糸状菌分子生物学コンファレンス
    • Related Report
      2019 Research-status Report
  • [Remarks] TANI@OMU

    • URL

      https://www.omu.ac.jp/agri/shuji_j/

    • Related Report
      2021 Annual Research Report
  • [Remarks] TANI@OPU

    • URL

      http://www.biosci.osakafu-u.ac.jp/shuji/

    • Related Report
      2020 Research-status Report
  • [Remarks] Tani@OPU

    • URL

      http://www.biosci.osakafu-u.ac.jp/shuji/

    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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