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Atomic Structures of Clock Protein Reflecting Ancient Earth's Rotation

Research Project

Project/Area Number 19K16061
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 43020:Structural biochemistry-related
Research InstitutionInstitute for Molecular Science

Principal Investigator

Furuike Yoshihiko  分子科学研究所, 協奏分子システム研究センター, 助教 (70757400)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords概日時計 / 概日リズム / 時計タンパク質 / ATP加水分解 / リン酸化 / シアノバクテリア / X線結晶構造解析 / ATP加水分解反応 / リン酸化・脱リン酸化反応 / 祖先配列 / タンパク質進化 / ATPase
Outline of Research at the Start

本研究では(1)系統樹に基づき各年代の祖先型KaiCを復元し、(2)それらのATP加水分解反応を実際に測定して太古地球の自転周期との対応関係を明らかにする際、(3)反応様式の変化を可能にしてきた分子構造基盤に立脚することで、シアノバクテリアの時計タンパク質KaiCが自律振動性・温度補償性・同調能をいかに獲得したか、すなわち機能発現の必要条件に物理化学、生物物理に基づいて迫る.

Outline of Final Research Achievements

Cyanobacterial clock protein KaiC measures time by using two chemical reactions, ATP hydrolysis and (de)phosphorylation. Newly identified ten KaiC crystal structures captured the key steps of each chemical reaction. KaiC generates circadian oscillations by regulating the atomic arrangement in active sites, secondary structural transformation, and tertiary and quaternary structures. This mechanism may have already been established in the ancestral KaiC, which is close to the origin of the circadian clock. The mechanism of KaiC revealed in this research project suggested that clock proteins from non-bacterial organisms, which are thought to have complex and diverse functions and structures, may have an unexpectedly simple mechanism.

Academic Significance and Societal Importance of the Research Achievements

私たちヒトを含む生物は、自転する地球の環境に適応して暮らしています。日周環境変動への適応システムは、社会や生態系のような大規模なものから、細胞や生体分子のような微小なものにまで様々なかたちで存在します。概日時計システムは、全長約10nmのタンパク質の化学反応によって駆動されています。分子内では、原子ひとつひとつや、原子の結合によって構成される構造ユニットの運動が、時間帯に応じて精密制御されていることが明らかになりました。本研究の着眼点、手法、成果および創出された学術概念は、様々な生物の概日時計研究に適用でき、また時間を読み取って自律制御する極小デバイスの開発などに知見を与え得ると考えられます。

Report

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

    (16 results)

All 2022 2021 2020 2019

All Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 7 results,  Open Access: 6 results) Presentation (9 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results)

  • [Journal Article] Slow and temperature-compensated autonomous disassembly of KaiB–KaiC complex2022

    • Author(s)
      Simon Damien、Mukaiyama Atsushi、Furuike Yoshihiko、Akiyama Shuji
    • Journal Title

      Biophysics and Physicobiology

      Volume: 19 Issue: 0 Pages: n/a

    • DOI

      10.2142/biophysico.bppb-v19.0008

    • ISSN
      2189-4779
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cross-scale analysis of temperature compensation in the cyanobacterial circadian clock system2022

    • Author(s)
      Furuike Yoshihiko、Ouyang Dongyan、Tominaga Taiki、Matsuo Tatsuhito、Mukaiyama Atsushi、Kawakita Yukinobu、Fujiwara Satoru、Akiyama Shuji
    • Journal Title

      Communications Physics

      Volume: 5 Issue: 1 Pages: 75-75

    • DOI

      10.1038/s42005-022-00852-z

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Elucidation of master allostery essential for circadian clock oscillation in cyanobacteria2022

    • Author(s)
      Furuike Yoshihiko、Mukaiyama Atsushi、Ouyang Dongyan、Ito-Miwa Kumiko、Simon Damien、Yamashita Eiki、Kondo Takao、Akiyama Shuji
    • Journal Title

      Science Advances

      Volume: 8 Issue: 15

    • DOI

      10.1126/sciadv.abm8990

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Regulation mechanisms of the dual ATPase in KaiC2022

    • Author(s)
      Furuike Yoshihiko、Mukaiyama Atsushi、Koda Shin-ichi、Simon Damien、Ouyang Dongyan、Ito-Miwa Kumiko、Saito Shinji、Yamashita Eiki、Nishiwaki-Ohkawa Taeko、Terauchi Kazuki、Kondo Takao、Akiyama Shuji
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 119 Issue: 19

    • DOI

      10.1073/pnas.2119627119

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Tuning the circadian period of cyanobacteria up to 6.6 days by the single amino acid substitutions in KaiC2020

    • Author(s)
      Ito-Miwa Kumiko、Furuike Yoshihiko、Akiyama Shuji、Kondo Takao
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 117 Issue: 34 Pages: 20926-20931

    • DOI

      10.1073/pnas.2005496117

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Development and optimization of expression, purification and ATPase assay of KaiC for medium throughput screening of circadian clock mutants in cyanobacteria2019

    • Author(s)
      Ouyang D, Furuike Y, Mukaiyama A, Ito-Miwa K, Kondo T and Akiyama S
    • Journal Title

      Int. J. Mol. Sci.

      Volume: 20 Issue: 11 Pages: 2789-2789

    • DOI

      10.3390/ijms20112789

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] KaiC from a cyanobacterium Gloeocapsa sp. PCC 7428 retains functional and structural properties required as the core of circadian clock system.2019

    • Author(s)
      Mukaiyama A, Ouyang D, Furuike Y, Akiyama S
    • Journal Title

      International Journal of Biological Macromolecules

      Volume: 131 Pages: 67-73

    • DOI

      10.1016/j.ijbiomac.2019.03.051

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 時計タンパク質のアロステリーに 基づく複雑なシアノバクテリア 概日振動の理解2022

    • Author(s)
      古池美彦
    • Organizer
      2021年度 名古屋リズム研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 原子レベルでみた 時計タンパク質KaiCの概日サイクル2022

    • Author(s)
      古池美彦
    • Organizer
      2021年度 日本生物物理学会中部支部例会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 時計タンパク質KaiCにおける リン酸化過程の原子レベルでの理解2021

    • Author(s)
      古池 美彦
    • Organizer
      2020年度 名古屋リズム研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 藍藻の概日リズムを制御する 時計タンパク質KaiCのアロステリー2021

    • Author(s)
      古池 美彦, 向山 厚, 欧陽 東彦, 伊藤(三輪)久美子,Damien SIMON, 山下 栄樹, 近藤孝男, 秋山修志
    • Organizer
      2021年度 日本結晶学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Core Allosteric Regulation in Cyanobacterial Circadian Clock Protein KaiC2021

    • Author(s)
      Yoshihiko Furuike, Atsushi Mukaiyama, Dongyan Ouyang, Kumiko Ito-Miwa, Damien Simon, Eiki Yamashita, Takao Kondo, and Shuji Akiyama
    • Organizer
      2021年度 日本生物物理学会年会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] シアノバクテリア概日時計を駆動する時計タンパク質KaiCの動作転換メカニズム2020

    • Author(s)
      古池美彦、向山厚、山下栄樹、近藤孝男、秋山修志
    • Organizer
      第 27 回 日本時間生物学会学術大会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Structural Relationships between ATP-hydrolysis and Phosphorylation Domains in Cyanobacterial Clock Protein KaiC2019

    • Author(s)
      Yoshihiko FURUIKE, Atsushi MUKAIYAMA, Eiki YAMASHITA, Takao KONDO, and Shuji AKIYAMA
    • Organizer
      V World Congress of Chronobiology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Structural Diversity of KaiC Hexamer in Cyanobacterial Circadian Clock2019

    • Author(s)
      Yoshihiko FURUIKE, Atsushi MUKAIYAMA, Eiki YAMASHITA, Takao KONDO, and Shuji AKIYAMA
    • Organizer
      日本生物物理学会年会
    • Related Report
      2019 Research-status Report
  • [Presentation] 時計タンパク質KaiCのリン酸化ドメインにおける水分子の同定2019

    • Author(s)
      古池美彦、向山厚、山下栄樹、近藤孝男、秋山修志
    • Organizer
      日本結晶学会年会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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