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Elucidation of the folding mechanism by LNBase-specific chaperones from Human gut bacteria

Research Project

Project/Area Number 18K14388
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 38030:Applied biochemistry-related
Research InstitutionThe University of Tokyo

Principal Investigator

Yamada Chihaya  東京大学, 大学院農学生命科学研究科(農学部), 助教 (30747944)

Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordsシャペロン / 腸内細菌 / フォールディング / X線結晶構造解析 / 結晶構造解析 / ビフィズス菌 / 細胞外
Outline of Final Research Achievements

A specific chaperone (LnbY) that fold lacto-N-biosidase (LnbX) degrading human milk oligosaccharidase from Bifidobacterium longum has been discovered, but its function has not been deduced because homologous sequences are not found in all known chaperones. In this study, we aimed to elucidate the folding mechanism of LnbX by LnbY in extracellular.The crystal structure of BsaY, a homologue of LnbY, was successfully determined at a resolution of 2.18 Å.

Academic Significance and Societal Importance of the Research Achievements

一般的にタンパク質の折りたたみを担う分子シャペロンと呼ばれるものは、さまざまなタンパク質に作用し折りたたむ。しかし、専用のシャペロンによるタンパク質の折りたたみがどう行われるかを明らかにするために、シャペロンの結晶構造解析に成功した。構造情報をもとに相互作用するアミノ酸残基を他の残基に変えて折りたたみしなくなるかどうか確認しているところである。タンパク質の折りたたみ機構に関する新規な機構を明らかにすることで、新たな知見を提供することができる。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (7 results)

All 2022 2021 2020 Other

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

  • [Int'l Joint Research] デンマーク工科大学(デンマーク)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Technical University of Denmark(デンマーク)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Crystal structures of glycoside hydrolase family 136 lacto-N-biosidases from monkey gut- and human adult gut bacteria2022

    • Author(s)
      Chihaya Yamada, Takane Katayama , Shinya Fushinobu
    • Journal Title

      Bioscience, Biotechnology, and Biochemistry

      Volume: 86 Issue: 4 Pages: 464-475

    • DOI

      10.1093/bbb/zbac015

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Butyrate producing Clostridiales utilize distinct human milk oligosaccharides correlating to early colonization and prevalence in the human gut2020

    • Author(s)
      Michael Jakob Pichler, Chihaya Yamada, Bashar Shuoker, Maria Camila Alvarez-Silva, Aina Gotoh, Maria Louise Leth, Erwin Schoof, Toshihiko Katoh, Mikiyasu Sakanaka, Takane Katayama, Chunsheng Jin, Niclas G. Karlsson, Manimozhiyan Arumugam, Shinya Fushinobu, Maher Abou Hachem
    • Journal Title

      Nature communications

      Volume: -

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 霊長類腸内細菌由来母乳オリゴ糖分解酵素と専用シャペロンのX線結晶構造解析とBioSAXS2022

    • Author(s)
      星野菜摘、山田千早、清水伸隆、荒川孝俊、片山高嶺、伏信進矢
    • Organizer
      2021年度量子ビームサイエンスフェスタ
    • Related Report
      2021 Annual Research Report
  • [Presentation] GH136に属するラクト-N-ビオシダーゼ特異的に作用する 専用シャペロンの結晶構造解析2021

    • Author(s)
      星野菜摘、山田千早、片山高嶺、伏信進矢
    • Organizer
      日本農芸化学会関東支部大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] GH136に属するラクト-N-ビオシダーゼホモログの結晶構造解析2021

    • Author(s)
      山田千早、片山高嶺、伏信進矢
    • Organizer
      日本農芸化学会
    • Related Report
      2020 Research-status Report

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Published: 2018-04-23   Modified: 2023-01-30  

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