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Elucidation of thermotolerant mechanism of the RNA essential for life activity under high-temperature environment

Research Project

Project/Area Number 18K06088
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 43020:Structural biochemistry-related
Research InstitutionThe University of Tokushima (2020)
Ehime University (2018-2019)

Principal Investigator

HIRATA Akira  徳島大学, 大学院社会産業理工学研究部(理工学域), 准教授 (60527381)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
KeywordstRNA modification / thermotolerant RNA / tRNA modification enzyme / Archaea / tRNA修飾 / アーキア / 耐熱化機構 / RNA成熟 / tRNAメチル化酵素 / 超好熱菌 / tRNA耐熱化機構 / tRNA修飾酵素
Outline of Final Research Achievements

We determined the complete sequence of tRNATrp, one of the substrate tRNAs for archaeal Trm11 essential for m22G10 formation from Thermococcus kodakarensis (Tko), a hyperthermophilic archaeon. In Tko tRNATrp, we identified 15 types of modified nucleoside at 21 positions. Our genetic analysis suggests that trm11 gene is required for Tko survival at high temperatures over 95 ℃. We also demonstrated that trm14 gene is responsible for m2G67 formation. On the other hands, we suggest that Archaeosine synthase ArcS requires a racial SAM enzyme RaSEA for archaeosine synthesis at 15 position in the Tko tRNA.

Academic Significance and Societal Importance of the Research Achievements

原始地球に生息した初期生命体は、高温環境下で生命活動を維持するために、修飾ヌクレオシドによりRNAを耐熱化する必要があったと考えられる。また、RNAの耐熱化に関わる修飾ヌクレオシドの合成経路を世界で初めて決定することができた。さらに、RNAを安定化する修飾ヌクレオシドも判明し、部位特異的にRNAを標識する技術開発やRNA創薬開発に新たな方向性を示すこととなった。今後、これらの研究成果を基盤に研究を継続することで、より発展的にRNAを安定化する革新的アイデアが生まれると期待している。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (17 results)

All 2020 2019 2018 Other

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

  • [Int'l Joint Research] University of California(米国)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Distinct Modified Nucleosides in tRNATrp from the Hyperthermophilic Archaeon Thermococcus kodakarensis and Requirement of tRNA m2G10/m22G10 Methyltransferase (Archaeal Trm11) for Survival at High Temperatures2019

    • Author(s)
      Hirata Akira、Suzuki Takeo、Nagano Tomoko、Fujii Daishiro、Okamoto Mizuki、Sora Manaka、Lowe Todd M.、Kanai Tamotsu、Atomi Haruyuki、Suzuki Tsutomu、Hori Hiroyuki
    • Journal Title

      Journal of Bacteriology

      Volume: 201 Issue: 21 Pages: 1-17

    • DOI

      10.1128/jb.00448-19

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Structure of tRNA methyltransferase complex of Trm7 and Trm734 reveals a novel binding interface for tRNA recognition2019

    • Author(s)
      Hirata Akira、Okada Keisuke、Yoshii Kazuaki、Shiraishi Hiroyuki、Saijo Shinya、Yonezawa Kento、Shimizu Nobutaka、Hori Hiroyuki
    • Journal Title

      Nucleic Acids Research

      Volume: 47 Issue: 20 Pages: 10942-10955

    • DOI

      10.1093/nar/gkz856

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Identification of a radical SAM enzyme involved in the synthesis of archaeosine2019

    • Author(s)
      Yokogawa Takashi、Nomura Yuichiro、Yasuda Akihiro、Ogino Hiromi、Hiura Keita、Nakada Saori、Oka Natsuhisa、Ando Kaori、Kawamura Takuya、Hirata Akira、Hori Hiroyuki、Ohno Satoshi
    • Journal Title

      Nature Chemical Biology

      Volume: 15 Issue: 12 Pages: 1148-1155

    • DOI

      10.1038/s41589-019-0390-7

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Recent Insights Into the Structure, Function, and Evolution of the RNA-Splicing Endonucleases2019

    • Author(s)
      Hirata Akira
    • Journal Title

      Frontiers in Genetics

      Volume: 10 Pages: 1-7

    • DOI

      10.3389/fgene.2019.00103

    • NAID

      120006953546

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] SpoU-TrmD RNAメチル化酵素スーパーファミリーの中で、最も長いC末領域を持つThermoplasma acidophilum Trm56の新しい精製法2020

    • Author(s)
      堀 弘幸、福本修平、長谷川貴宏、難波美優、平田 章、河村卓哉
    • Organizer
      第43回日本分子生物学会年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 超好熱性アーキアThermococcus kodakarensis 由来tRNAメチル化酵素Trm14の研究2020

    • Author(s)
      野利本剛、平田 章、空 まかな、堀 弘幸
    • Organizer
      第43回日本分子生物学会年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] アーキア特異的修飾ヌクレオシド、アーケオシンの合成に関わる新奇ラジカルSAM酵素2019

    • Author(s)
      横川隆志 , 能村友一朗 , 安田旭宏 , 尾木野弘実 , 日浦恵太 , 仲田沙織 , 岡 夏央 , 安藤香織 , 河村卓哉 , 平田 章 , 堀 弘幸 , 大野 敏
    • Organizer
      第42回日本分子生物学会年会 福岡
    • Related Report
      2019 Research-status Report
  • [Presentation] Analysis of distinct modified nucleosides in tRNA from the hyperthermophilic archaeon Thermococcous kodakarensis provides insight into the requirement of specific tRNA modifications and their responsible genes for survival at high temperatures2019

    • Author(s)
      Hirata, A , Suzuki, T , Nagano, T , Fuji, D , Okamoto, M , Sora, M , Lowe, M. T , Kanai, T , Atomi, H , Suzuki, T , Hori H
    • Organizer
      Thermophiles2019 福岡
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] (超)好熱性アーキアのRNA修飾の研究2019

    • Author(s)
      平田 章
    • Organizer
      微生物ウィーク2019 東京大学農学部弥生講堂
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Structure of tRNA methyltransferase complex of Trm7 and Trm734 provides insight into its novel bipartite interaction essential for tRNA recognition and 2´-O-methylation at the first position of anticodon in specific tRNAs2019

    • Author(s)
      Hirata, A , Okada, K , Yoshi, K , Shiraishi, H , Saijo, S , Yonezawa, K , Shimizu, N , Hori, H
    • Organizer
      第21回日本RNA学会年会 東京大学伊藤国際学術研究センター
    • Related Report
      2019 Research-status Report
  • [Presentation] 大腸菌tRNA (Gm18) メチル化酵素(TrmH)の基質tRNA選択システム2018

    • Author(s)
      河野 陽、伊藤亜沙子、山上龍太、平田 章、堀 弘幸
    • Organizer
      第20回日本RNA学会年会
    • Related Report
      2018 Research-status Report
  • [Presentation] The RNA-splicing endonuclease from the Euryarchaea Methanopyrus kandleri uniquely represents a heterodimer with constraint range of substrate specificity: Supporting the coevolutionary scenario of protein function and tRNA gene diversity2018

    • Author(s)
      Kaneta, A., Fujishima, K., Morikazu, W., Hori, H., and Hirata, A.
    • Organizer
      extremophiles 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Structure of yeast tRNA Nm34 methyltransferase Trm7-Trm734 complex reveals its novel bipartite interaction essential for 2'-O-methylation of N34 in the wobble position of three specific tRNA species2018

    • Author(s)
      Hirata, A., Okada, K., Yoshii, K., Shiraishi, H., Saijo, S., Yonezawa, K., Shimizu, N., and Hori, H.
    • Organizer
      27th tRNA Conference
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Methanosarcina acetivoransにおける修飾ヌクレオシドアーケオシン生合成経路の解明2018

    • Author(s)
      日浦恵太、能村友一朗、安田旭宏、大野 敏、尾木野弘実、河村卓哉、平田 章、堀 弘幸、横川隆志
    • Organizer
      第41回日本分子生物学会年会
    • Related Report
      2018 Research-status Report
  • [Remarks] 新しいtRNA修飾酵素を発見-無酸素環境下で鉄と硫黄を含む酵素が関わる反応機構を解明-

    • URL

      https://www.ehime-u.ac.jp/data_relese/data_relese-106715/

    • Related Report
      2019 Research-status Report
  • [Remarks] 遺伝情報の読み取りを強化するtRNAのメチル化の仕組みを構造解析と生化学解析により解明

    • URL

      https://www.ehime-u.ac.jp/data_relese/data_relese-105529/

    • Related Report
      2019 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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