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Study of the mechanism of nascent polypeptide-induced translation abortion.

Research Project

Project/Area Number 17K15062
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Molecular biology
Research InstitutionTokyo Institute of Technology

Principal Investigator

Chadani Yuhei  東京工業大学, 科学技術創成研究院, 特任助教 (30794383)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2017: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywordsタンパク質合成 / リボソーム / 新生ポリペプチド鎖 / 翻訳 / 遺伝子発現 / tRNA / 翻訳伸長 / peptidyl-tRNA / 遺伝子発現制御
Outline of Final Research Achievements

Translation of consecutive negatively charged amino acid residues destabilizes 70S ribosome and stochastically aborts translation elongation. To reveal the mechanism of this phenomenon defined as intrinsic ribosome destabilization (IRD), I performed biochemical and genetics approach. Then I revealed that specific interactions within the translating 70S ribosome complex stabilize the complex itself, and IRD disrupts them. Furthermore, I revealed the possibility that IRD could induce not only translation abortion but also expansion of the interpretation of open reading frame (ORF).

Academic Significance and Societal Importance of the Research Achievements

本研究から、遺伝子発現の最終過程である翻訳に内包される潜在的リスクと、それに対するカウンターメカニズムの存在が示唆された。一方で、そうしたリスクすら活用する生物の強かさも示唆され、近年揺らぎつつある1遺伝子 : 1タンパクの大原則に新たな視点を提供できるものと期待している。また、原核生物におけるタンパク質合成の限界の一端が明らかになったことで、工業的に有用な改変大腸菌株の作成についても新たな可能性が示されたものと考えている。

Report

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

    (8 results)

All 2019 2018 2017 Other

All Journal Article (4 results) (of which Peer Reviewed: 1 results) Presentation (2 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Remarks (2 results)

  • [Journal Article] 翻訳伸長ダイナミクスと新生鎖フォールディング2019

    • Author(s)
      田口 英樹、茶谷 悠平、丹羽 達也
    • Journal Title

      生物物理

      Volume: 59

    • NAID

      130007653151

    • Related Report
      2018 Annual Research Report
  • [Journal Article] 終止コドンに依らず翻訳を途中終了させる酸性アミノ酸の連続配列2018

    • Author(s)
      田口 英樹、茶谷 悠平、千葉 志信、伊藤 維昭
    • Journal Title

      バイオサイエンスとインダストリー

      Volume: 76 Pages: 239-241

    • NAID

      40021578678

    • Related Report
      2018 Annual Research Report
  • [Journal Article] 翻訳途上の新生ポリペプチド鎖が引き起こすリボソームの不安定化とその生理的意義2018

    • Author(s)
      茶谷 悠平、千葉 志信、伊藤 維昭、田口 英樹
    • Journal Title

      実験医学

      Volume: 36 Pages: 1364-1367

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Intrinsic Ribosome Destabilization Underlies Translation and Provides an Organism with a Strategy of Environmental Sensing2017

    • Author(s)
      Chadani Yuhei、Niwa Tatsuya、Izumi Takashi、Sugata Nobuyuki、Nagao Asuteka、Suzuki Tsutomu、Chiba Shinobu、Ito Koreaki、Taguchi Hideki
    • Journal Title

      Molecular Cell

      Volume: 68 Issue: 3 Pages: 528-539

    • DOI

      10.1016/j.molcel.2017.10.020

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] Intrinsic Ribosome Destabilization Underlies Translation and Provides an Organism with a Strategy of Environmental Sensing.2019

    • Author(s)
      Yuhei Chadani, Tatsuya Niwa, Takashi Izumi, Nobuyuki Sugata, Asuteka Nagao, Tsutomu Suzuki, Shinobu Chiba, Koreaki Ito and Hideki Taguchi
    • Organizer
      Ribosome meeting 2019
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Widespread nascent chain-mediated translational pausing and intrinsic ribosome destabilization2017

    • Author(s)
      Yuhei Chadani, Tatsuya Niwa, Takashi Izumi, Nobuyuki Sugata, Asuteka Nagao, Tsutomu Suzuki, Shinobu Chiba, Koreaki Ito and Hideki Taguchi
    • Organizer
      第69回日本細胞生物学会大会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Remarks] 合成途上のタンパク質が故意に合成を中断する現象を発見 ―細胞内の環境変化を感知する新たなしくみ―

    • URL

      https://www.titech.ac.jp/news/2017/039773.html

    • Related Report
      2018 Annual Research Report
  • [Remarks] 翻訳の途上の新生ポリペプチド鎖がひき起こすリボソームの不安定化および環境のセンサーとしての利用

    • URL

      http://first.lifesciencedb.jp/archives/17459

    • Related Report
      2018 Annual Research Report

URL: 

Published: 2017-04-28   Modified: 2021-12-27  

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