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Protein evolution from simple peptide to versatile protein fold

Research Project

Project/Area Number 20K15854
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 45020:Evolutionary biology-related
Research InstitutionWaseda University (2023)
Institute of Physical and Chemical Research (2020-2022)

Principal Investigator

Yagi Sota  早稲田大学, 人間科学学術院, 講師(任期付) (10779820)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsタンパク質 / 生命の起源 / RNAポリメラーゼ / 分子進化 / 構造生物学 / タンパク質進化 / フォールディング / タンパク質のフォールディング
Outline of Research at the Start

セントラルドグマにおける「転写」反応を司るRNAポリメラーゼの活性ドメインを含め、多くのタンパク質で保存されるβバレフォールドであるDPBBの起源を探る。そのため、本研究では、理論的設計法及びコンピュータデザイン手法により祖先DPBBを実験的に復元し、その機能解析を進める。これにより、汎用的な祖先DPBBフォールドが如何にして誕生し、原始的な生物システムにどのような機能を与えうるかを解明する。

Outline of Final Research Achievements

In this project, I have succeeded in experimentally reconstruction of the evolution of the β-barrel structure conserved in many proteins involved in the gene expression system. First, I found that the β-barrel fold DPBB conserved in the active core of RNA polymerase can be reconstituted from a short dimeric peptide of about 40 residues consisting of seven types of amino acids. I also found that this simple short peptide can adopt a new β-barrel structure, DZBB, which is not found in nature. The DZBB can be converted to other β-barrel protein folds, such as the OB structure, suggesting that it may be the missing-link in the evolution of proteins. These findings are a remarkable achievement in elucidating the early evolution of gene expression systems.

Academic Significance and Societal Importance of the Research Achievements

タンパク質の初期進化研究は理論的研究が先行しており、実験的検証が進んでいない状況であった。それに対して、本研究では、遺伝子発現系に関与するRNAポリメラーゼやリボソームタンパク質が持つβバレルタンパク質がどのようにして単純なペプチド配列から進化してきたのか、またβバレル構造の多様化が生じてきたのかを実験的に明らかにしてきた。これらの結果は、将来的に遺伝子発現系がどのように誕生し進化をしてきたかを明らかにする上で実験的な証拠を提供し、生命の起源の理解に大きな貢献が期待できる。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (16 results)

All 2024 2023 2022 2021 Other

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Open Access: 2 results,  Peer Reviewed: 2 results) Presentation (10 results) (of which Int'l Joint Research: 2 results,  Invited: 3 results) Remarks (2 results)

  • [Journal Article] Missing-link fold reveals the evolutionary pathway between RNA polymerase and ribosomal proteins2023

    • Author(s)
      Sota Yagi and Shunsuke Tagami
    • Journal Title

      bioRxiv

      Volume: -

    • DOI

      10.1101/2023.07.05.547881

    • Related Report
      2023 Annual Research Report
    • Open Access
  • [Journal Article] Reconstruction of the ancient beta-barrel with seven amino acid types2022

    • Author(s)
      八木創太、田上俊輔
    • Journal Title

      Viva Origino

      Volume: 50 Issue: 1 Pages: 1

    • DOI

      10.50968/vivaorigino.50_1

    • ISSN
      0910-4003, 1346-6933
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Seven Amino Acid Types Suffice to Create the Core Fold of RNA Polymerase2021

    • Author(s)
      Sota Yagi, Aditya K. Padhi, Jelena Vucinic, Sophie Barbe, Thomas Schiex, Reiko Nakagawa, David Simoncini*, Kam Y. J. Zhang*, and Shunsuke Tagami*
    • Journal Title

      Journal of the American Chemical Society

      Volume: 143 Issue: 39 Pages: 15998-16006

    • DOI

      10.1021/jacs.1c05367

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Seven amino acid types suffice to reconstruct the core fold of RNA polymerase2021

    • Author(s)
      Yagi Sota、Padhi Aditya K.、Vucinic Jelena、Barbe Sophie、Schiex Thomas、Nakagawa Reiko、Simoncini David、Zhang Kam Y. J.、Tagami Shunsuke
    • Journal Title

      Biorxiv

      Volume: -

    • DOI

      10.1101/2021.02.22.432383

    • Related Report
      2020 Research-status Report
    • Open Access
  • [Presentation] Experimental reconstruction of the evolutionary pathway bridging central dogma machinery via a missing-link fold2024

    • Author(s)
      Sota Yagi and Shunsuke Tagami
    • Organizer
      Joint CO world & 12th ELSI Symposium “EMERGENCE AND DETECTION OF LIFE”
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Reconstruction of ancient protein folds in the central dogma machinery2023

    • Author(s)
      Sota Yagi and Shunsuke Tagami
    • Organizer
      Library Design for Protein Engineering 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Experimental reconstruction of the evolutionary pathway between ancient beta‐barrel proteins2023

    • Author(s)
      Sota Yagi and Shunsuke Tagami
    • Organizer
      日本進化学会第25回沖縄大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Experimental reconstruction of the evolutionary pathway between ancient four b-barrels through a missing-link fold2023

    • Author(s)
      八木創太、田上俊輔
    • Organizer
      第47回 生命の起源および進化学会学術講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] Reconstruction of the evolution of the ancient b-barrels with a limited amino acid types2022

    • Author(s)
      八木創太、田上俊輔
    • Organizer
      第45回日本分子生物学会年会
    • Related Report
      2022 Research-status Report
  • [Presentation] RNAポリメラーゼの進化的起源2022

    • Author(s)
      八木創太、田上俊輔
    • Organizer
      第24回日本進化学会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 古代βバレルタンパク質のメタモルフォーゼ2022

    • Author(s)
      八木創太、田上俊輔
    • Organizer
      第46回 生命の起原および進化学会学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 単純なペプチドから RNA ポリメラーゼコアドメインへの進化過程の実験的再現2021

    • Author(s)
      八木 創太,、田上 俊輔
    • Organizer
      第59回日本生物物理学会年会
    • Related Report
      2021 Research-status Report
  • [Presentation] 7種類のアミノ酸だけで古代βバレルを創る2021

    • Author(s)
      八木創太
    • Organizer
      生命の起原および進化に関するシンポジウム
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Evolution of the core fold in RNA polymerase from ancient simple peptide2021

    • Author(s)
      Sota Yagi
    • Organizer
      RIKEN BDR symposium 2021
    • Related Report
      2020 Research-status Report
  • [Remarks] 生命誕生初期のタンパク質を再現する試み

    • URL

      https://www.riken.jp/press/2021/20211202_2/index.html

    • Related Report
      2021 Research-status Report
  • [Remarks] Evolution of a RNA polymerase

    • URL

      https://www.riken.jp/en/news_pubs/research_news/rr/20220127_1/index.html

    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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