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Mechanism of transcription termination by RNA polymerase

Research Project

Project/Area Number 17K15082
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Structural biochemistry
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Murayama Yuko  国立研究開発法人理化学研究所, 生命機能科学研究センター, 研究員 (50708592)

Project Period (FY) 2017-04-01 – 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 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords転写終結メカニズム / クライオ電子顕微鏡構造解析 / クライオ電顕構造解析 / 電子顕微鏡構造解析 / 転写終結 / クライオ電顕 / クライオ電子顕微鏡 / 転写 / RNAポリメラーゼ / 電子顕微鏡 / 構造解析
Outline of Final Research Achievements

RNA polymerase (RNAP) is a huge protein complex that transcribes genetic information stored on DNA into RNA. During the termination step of transcription, RNAP completes gene reading and releases the DNA and RNA. The termination step is critical for proper regulation of gene expression, however, its mechanism is largely unknown.
In this study, we performed cryo-EM structural analysis to elucidate the mechanism by which the Rho protein induces transcription termination. We first established an in vitro system that recapitulates Rho-dependent transcription termination. Cryo-EM single particle analysis revealed the structure of the complex in which the Rho protein binds to RNAP during transcription.
This study contributes to understand the mechanism of transcription termination, which is a basic cellular process.

Academic Significance and Societal Importance of the Research Achievements

Rhoは古くから知られた転写終結因子で、その機能については約50年にわたり研究されてきたが、RhoがどのようにRNAPや新生RNAと相互作用し、転写終結を引き起こすのかについては分かっていなかった。本研究は、Rhoが新生RNAを介して転写中のRNAPに結合した姿を初めて捉えたもので、転写終結という細胞の基本的なプロセスの理解に大きく貢献すると期待できる。
また、Rho依存的転写終結は翻訳や転写の制御をはじめとするさまざまな細胞内プロセスと協調して行われている。細胞はこれらのプロセスを状況に応じて調節しながら実行することでその機能を維持しており、本研究はその仕組みの理解を推し進めるものである。

Report

(7 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (8 results)

All 2023 2022 2021 2019 2017 Other

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (5 results) (of which Int'l Joint Research: 4 results) Remarks (1 results)

  • [Journal Article] Structural basis of the transcription termination factor Rho engagement with transcribing RNA polymerase from <i>Thermus thermophilus</i>2023

    • Author(s)
      Murayama Yuko、Ehara Haruhiko、Aoki Mari、Goto Mie、Yokoyama Takeshi、Sekine Shun-ichi
    • Journal Title

      Science Advances

      Volume: 9 Issue: 6

    • DOI

      10.1126/sciadv.ade7093

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A Thermus phage protein inhibits host RNA polymerase by preventing template DNA strand loading during open promoter complex formation2017

    • Author(s)
      Ooi Wei-Yang、Murayama Yuko、Mekler Vladimir、Minakhin Leonid、Severinov Konstantin、Yokoyama Shigeyuki、Sekine Shun-ichi
    • Journal Title

      Nucleic Acids Research

      Volume: 46 Issue: 1 Pages: 431-441

    • DOI

      10.1093/nar/gkx1162

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Structure of RNA polymerase bound with transcription termination factor Rho2022

    • Author(s)
      Yuko Murayama, Haruhiko Ehara, Mari Aoki, Mie Goto, Shun-ichi Sekine
    • Organizer
      日本分子生物学会2022年年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Structural basis of interplay between transcription and translation machineries2021

    • Author(s)
      Yuko Murayama, Haruhiko Ehara, Mari Aoki and Shun-ichi Sekine
    • Organizer
      BDR retreat 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Structure of RNA polymerase bound with transcription termination factor Rho2021

    • Author(s)
      Yuko Murayama, Haruhiko Ehara, Mari Aoki and Shun-ichi Sekine
    • Organizer
      BDR Symposium 2021
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Structure of Thermus Thermophilus RNAP Elongation Complex Bound with Termination Factor Rho2019

    • Author(s)
      Yuko Murayama, Mari Aoki, Takeshi Yokoyama, Mikako Shirouzu and Shun-ichi Sekine
    • Organizer
      Gordon research conference “Mechanisms of microbial transcription”
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Structural studies of RNA polymerase elongation complex bound with a phage-encoded transcription factor gp392017

    • Author(s)
      Yuko Murayama, Leonid Minakhin, Konstantin Severinov, Shigeyuki Yokoyama, Shun-ichi Sekine
    • Organizer
      FASEB Science Research Conferences "Mechanism and Regulation of Prokaryotic Transcription"
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Remarks] 遺伝子の読み取りを終わらせるメカニズム -転写終結因子が結合したRNAポリメラーゼの構造を解明-

    • URL

      https://www.riken.jp/press/2023/20230209_1/index.html

    • Related Report
      2022 Annual Research Report

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Published: 2017-04-28   Modified: 2024-01-30  

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