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Reconstitution of the adhesive nanofiber protein on the outer membrane of Gram-negative bacteria

Research Project

Project/Area Number 17K14868
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Biofunction/Bioprocess
Research InstitutionNagoya University

Principal Investigator

Ishikawa Masahito  名古屋大学, 工学研究科, 助教 (70750602)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywordsナノファイバー / 接着蛋白質 / 固定化微生物 / 外膜蛋白質 / Acinetobacter / 微生物 / ナノファイバー蛋白質 / アドヘシン / オートトランスポーター / 蛋白質 / バイオテクノロジー
Outline of Final Research Achievements

This study aimed to establish a methodology for displaying AtaA, which is an adhesive nanofiber protein from Acinetobacter sp. Tol 5, on cell surfaces of any Gram-negative bacteria. To identify proteins involved in the secretion of AtaA, random mutagenesis for screening non-AtaA-displaying mutants, the classification of AtaA-displaying bacteria and non-AtaA-displaying bacteria, and the comparative genome analysis of these bacteria were performed. Although the target proteins were not identified during the research period, I think it is possible to get them nearly future because the construction of mutant library and the selection of candidate genes by the genome comparative analysis have been completed. Also, this study turned out matters important for the AtaA-display on bacterial cell surfaces, which were not initially assumed.

Academic Significance and Societal Importance of the Research Achievements

研究代表者らが発見した「何にでもくっつくことのできる微生物の毛」は工学的利用価値が高い。例えば、我々にとって有用な微生物に“毛”を自在に生やし、任意の場所にひっつけることができれば、微生物を使ったものづくりの効率化が期待できる。本研究は、あらゆる菌に“毛”を生やすための方法論の構築に取り組んだ。研究期間内ではあらゆる菌に対して“毛”を生やすためのルールを見出すことはできなかったが、考慮すべき項目が明らかとなった。また、実験に使用したある種の菌には必ず“毛”を生やすことができるとわかった。この菌種には有用なものも多く含まれているので、より良いものづくりが可能となるかもしれない。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (6 results)

All 2019 2018 2017 Other

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

  • [Int'l Joint Research] Goethe University/BIK-F/Max Planck Institute(ドイツ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] University of Oslo(ノルウェー)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] The Acinetobacter trimeric autotransporter adhesin Ata controls key virulence traits of Acinetobacter baumannii2019

    • Author(s)
      Marko Weidensdorfer, Masahito Ishikawa, Katsutoshi Hori, Dirk Linke, Bardya Djahanschiri, Ruben Iruegas, Ingo Ebersberger, Sara Riedel-Christ, Giulia Enders, Laura Leukert, Peter Kraiczy, Florian Rothweiler, Jindrich Cinatl, Jürgen Berger, Katharina Hipp, Volkhard AJ Kempf, Stephan Göttig
    • Journal Title

      Virulence

      Volume: 10 Issue: 1 Pages: 68-81

    • DOI

      10.1080/21505594.2018.1558693

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 接着ナノファイバー蛋白質AtaAの利用と分泌機構の理解2018

    • Author(s)
      石川聖人、堀克敏
    • Organizer
      化学工学会 第50回秋季大会鹿児島大学
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 微生物触媒の固定化を目指したナノファイバー蛋白質AtaAの小型化2017

    • Author(s)
      青木壮太, 吉本将悟, 石川聖人, 堀克敏
    • Organizer
      第69回 日本生物工学会大会
    • Related Report
      2017 Research-status Report
  • [Presentation] ホモ三量体ファイバータンパク質AtaAの菌体外分泌生産の検討2017

    • Author(s)
      唐鎌智也,石川聖人,吉本将悟,堀克敏
    • Organizer
      第69回 日本生物工学会大会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2020-03-30  

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