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Rhamnogalacturonan degradation mechanism of Aspergillus nidulans

Research Project

Project/Area Number 20K05815
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 InstitutionMeijo University

Principal Investigator

Shimizu Motoyuki  名城大学, 農学部, 准教授 (20423535)

Co-Investigator(Kenkyū-buntansha) 高須賀 太一  北海道大学, 農学研究院, 准教授 (70748409)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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)
KeywordsAspergillus nidulans / pectin / rhamnogalacturonan lyase / Rhamnogalacturonan lyase / Rhamnogalacturonan / Polysaccharide lyase / 機能未知タンパク質 / ペクチン / 糸状菌 / 機能未知酵素 / 多糖分解酵素 / プロテオミクス
Outline of Research at the Start

本研究では、プロテオミクスの手法を基盤にして、A. nidulansを対象に種々の多糖の分解過程において生産されている機能未知タンパク質 (HP) を網羅的にスクリーニングする。同定されたHPのリコンビナントを調製し機能を解析することによって、新規多糖分解酵素を発見し、酵素学的性質および立体構造を解明することを目指す。また、新規酵素遺伝子の遺伝子破壊株を作製し、野生株と遺伝子破壊株の表現型を解析することで、見出した酵素の生理学的役割を明らかにする。

Outline of Final Research Achievements

Hypothetical proteins (HPs) were produced by Aspergillus nidulans grown with pectin as a sole carbon source. Among them, we identified a novel rhamnogalacturonan (RG) lyase (AnRGL) with no similarity to any described functional proteins and no putative conserved domains. AnRGL showed significant activity toward RG, while acitivity toward polygalacturonic acid, α-1, 5-arabinan, arabinogalactan, and β-1, 4 -galactan, which are components of pectin, were not detectable. RG degradation products by AnRGL were analyzed using MALDI-TOF-MS. RG oligosaccharides containing unsaturated bonds were identified. These results indicate that AnRGL is a novel RG lyase that belongs to a new polysaccharide lyase (PL) family. The crystal structure of AnRGL was solved at a resolution of 1.72 A, and AnRGL is a β-helix structure.

Academic Significance and Societal Importance of the Research Achievements

ペクチンの分解で生じるオリゴ糖(D-ガラクトシル-β-1,4-ラムノース)を炭素源として、ビフィズス菌Bifidobacterium infantisと難病の偽膜性腸炎原因菌Clostridium difficileを共培養したところ、C. difficileの増殖を抑えることが報告されており、応用研究にも波及効果が期待できる。
本研究により見出された糸状菌由来のペクチン分解酵素の利用によって、ペクチンを多く含む果皮などの未利用植物資源から新規機能性オリゴ糖を生産することが可能になり、上記のような疾病予防効果を通じて、人類の健康に貢献できる。

Report

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

    (13 results)

All 2023 2022 2021 2020

All Journal Article (7 results) (of which Peer Reviewed: 7 results,  Open Access: 3 results) Presentation (6 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Biochemical characterization of hydroquinone hydroxylase from Phanerochaete chrysosporium2023

    • Author(s)
      Suzuki Hiromitsu、Mori Reini、Kato Masashi、Shimizu Motoyuki
    • Journal Title

      Journal of Bioscience and Bioengineering

      Volume: 135 Issue: 1 Pages: 17-24

    • DOI

      10.1016/j.jbiosc.2022.10.001

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Biochemical Characterization of a Pectate Lyase AnPL9 from Aspergillus nidulans2022

    • Author(s)
      Suzuki Hiromitsu、Morishima Toshiki、Handa Atsuya、Tsukagoshi Hironaka、Kato Masashi、Shimizu Motoyuki
    • Journal Title

      Applied Biochemistry and Biotechnology

      Volume: 194 Issue: 12 Pages: 5627-5643

    • DOI

      10.1007/s12010-022-04036-x

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Characterization of two 1,2,4-trihydroxybenzene 1,2-dioxygenases from Phanerochaete chrysosporium2022

    • Author(s)
      Kato Hiroyuki、Furusawa Terumi T.、Mori Reini、Suzuki Hiromitsu、Kato Masashi、Shimizu Motoyuki
    • Journal Title

      Applied Microbiology and Biotechnology

      Volume: 106 Issue: 12 Pages: 4499-4509

    • DOI

      10.1007/s00253-022-12007-9

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Enhanced Bioremediation of 4-Chlorophenol by Electrically Neutral Reactive Species Generated from Nonthermal Atmospheric-Pressure Plasma2022

    • Author(s)
      Kato Hiroyuki、Sakai Kiyota、Itoh Shou、Iwata Naoyuki、Ito Masafumi、Hori Masaru、Kato Masashi、Shimizu Motoyuki
    • Journal Title

      ACS Omega

      Volume: 7 Issue: 18 Pages: 16197-16203

    • DOI

      10.1021/acsomega.2c01615

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Administration of Aspergillus oryzae suppresses DSS-induced colitis2022

    • Author(s)
      Nomura Ryo、Tsuzuki Sho、Kojima Takaaki、Nagasawa Mao、Sato Yusuke、Uefune Masayoshi、Baba Yasunori、Hayashi Toshiya、Nakano Hideo、Kato Masashi、Shimizu Motoyuki
    • Journal Title

      Food Chemistry: Molecular Sciences

      Volume: 4 Pages: 100063-100063

    • DOI

      10.1016/j.fochms.2021.100063

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Artificial AmyR::XlnR transcription factor induces α-amylase production in response to non-edible xylan-containing hemicellulosic biomass2021

    • Author(s)
      Yamashita Miharu、Tsujikami Masaya、Murata Shunsuke、Kobayashi Tetsuo、Shimizu Motoyuki、Kato Masashi
    • Journal Title

      Enzyme and Microbial Technology

      Volume: 145 Pages: 109762-109762

    • DOI

      10.1016/j.enzmictec.2021.109762

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Characterization of FsXEG12A from the cellulose-degrading ectosymbiotic fungus Fusarium spp. strain EI cultured by the ambrosia beetle2020

    • Author(s)
      Sakai Kiyota、Yamaguchi Aya、Tsutsumi Seitaro、Kawai Yuto、Tsuzuki Sho、Suzuki Hiromitsu、Jindou Sadanari、Suzuki Yoshihito、Kajimura Hisashi、Kato Masashi、Shimizu Motoyuki
    • Journal Title

      AMB Express

      Volume: 10 Issue: 1 Pages: 96-96

    • DOI

      10.1186/s13568-020-01030-6

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Enhanced bioremediation of 4-chlorophenol by oxygen radical treatment based on non-thermal atmospheric pressure plasma2022

    • Author(s)
      Hiroyuki Kato, Kiyota Sakai, Shou Ito, Naoyuki Iwata, Masafumi Ito, Masaru Hori, Motoyuki Shimizu, Masashi Kato
    • Organizer
      14th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 発酵食品中に含まれる 麹菌のプレバイオティクス効果2022

    • Author(s)
      野村亮, 都築翔, 木村公俊, 兒島孝明, 志水元亨, 加藤雅士
    • Organizer
      日本農芸化学会
    • Related Report
      2021 Research-status Report
  • [Presentation] 白色腐朽担子菌 Phanerochaete chrysosporium 由来の新規 flavin-containing monooxygenase の機能・構造解析2021

    • Author(s)
      森玲香, 鈴木裕満, 加藤雅士, 志水元亨
    • Organizer
      糸状菌分子生物学カンファレンス
    • Related Report
      2021 Research-status Report
  • [Presentation] 13.Oxygen radical based on NTAP converts lignin-derived phenolics vanillin, an inhibitor of bioethanol fermentation by yeast2021

    • Author(s)
      H. Kato, S. Ito, K. Sakai, V. Gamaleev, M. Ito, M. Hori, M. Shimizu, M. Kato
    • Organizer
      13th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Aspergillus nidulans 由来新規ラムノガラクツロナンリアーゼの機能解析2021

    • Author(s)
      伊東昂希、鈴木裕満、鈴木健吾、酒井杏匠、高須賀太一、堀千明、加藤雅士、志水元亨
    • Organizer
      日本農芸化学会
    • Related Report
      2020 Research-status Report
  • [Presentation] 糸状菌 Aspergillus nidulans が生産するペクチン酸リアーゼAnPL9の機能解析2021

    • Author(s)
      森島俊輝、伊東昂希、酒井杏匠, 志水元亨, 加藤雅士
    • Organizer
      日本農芸化学会
    • Related Report
      2020 Research-status Report

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

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