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Structural basis for DNA repair machinery including RNA/DNA heteroduplex

Research Project

Project/Area Number 19K23733
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0701:Biology at molecular to cellular levels, and related fields
Research InstitutionAichi Cancer Center Research Institute (2020)
Ritsumeikan University (2019)

Principal Investigator

Uehara Ryo  愛知県がんセンター(研究所), 腫瘍制御学分野, 研究員 (70842590)

Project Period (FY) 2019-08-30 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsRNase H2 / DNA修復 / BRCA2 / RNA/DNAハイブリッド / X線結晶構造解析
Outline of Research at the Start

本研究では、RNase H2がBRCA2との結合を通じてDNA修復を制御する分子機構をX線結晶構造解析によって解明する。RNA/DNAハイブリッドは転写・翻訳時に頻繁にゲノムDNA中で形成されており、RNase H2によって除去される。RNase H2はDNA損傷に繋がるRNA/DNAハイブリッドを除去する一方で、二本鎖DNA損傷箇所に形成するRNA/DNAハイブリッドの分解を通じてその修復を制御する。構造生物学的アプローチを用いてRNase H2とBRCA2の複合体構造を解析し、RNase H2とBRCA2が協働するDNA修復の分子機構を解明する。

Outline of Final Research Achievements

In this study, we biochemically analyzed the complex between RNase H2 and BRCA2 repeat peptides to reveal how RNase H2 is recruited to the site of DNA double strand breaks where an RNA/DNA heteroduplex is formed. For a comparative study, we purified and crystallized a recombinant protein of RNase H2 from E. coli (Ec-RNase H2), which exhibits the distinct RNA/DNA hydrolysis activity from that of the human enzyme. Furthermore, we generated the synthetic binding proteins that may act as a crystallization chaperone for Ec-RNase H2.

Academic Significance and Societal Importance of the Research Achievements

RNase H2とBRCA2リピートペプチドの組み換えタンパク質を用いた相互作用解析によって、二者間の結合は極めて弱く、RNase H2がDNA損傷部位へ誘導されるためには他のタンパク質が関与する可能性が示唆された。RNase H2の遺伝子への変異は先天性自己免疫疾患やがんと深く関与しており、その生理機能について詳細な分子機構の解明は、疾患発症メカニズムの理解や新規治療標的の発見という点において意義深い。

Report

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

    (14 results)

All 2020 2019 Other

All Int'l Joint Research (3 results) Journal Article (7 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 7 results,  Open Access: 2 results) Presentation (4 results)

  • [Int'l Joint Research] National Institutes of Health(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] National Institutes of Health(米国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] University of Udine(イタリア)

    • Related Report
      2019 Research-status Report
  • [Journal Article] A threshold of ribonucleotide tolerance in chromosomal DNA2020

    • Author(s)
      上原 了
    • Journal Title

      生化学

      Volume: 92 Issue: 5 Pages: 744-747

    • DOI

      10.14952/SEIKAGAKU.2020.920744

    • NAID

      40022394521

    • ISSN
      0037-1017
    • Year and Date
      2020-10-25
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Crystal structure of a GH1 β‐glucosidase from Hamamotoa singularis2020

    • Author(s)
      Uehara Ryo、Iwamoto Riki、Aoki Sayaka、Yoshizawa Takuya、Takano Kazufumi、Matsumura Hiroyoshi、Tanaka Shun‐ichi
    • Journal Title

      Protein Science

      Volume: 29 Issue: 9 Pages: 2000-2008

    • DOI

      10.1002/pro.3916

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Insertion loop‐mediated folding propagation governs efficient maturation of hyperthermophilic Tk‐subtilisin at high temperatures2020

    • Author(s)
      Uehara R., Dan N., Amesaka H., Yoshizawa T., Koga Y.., Kanaya S., Takano K., Matsumura H., Tanaka SI.
    • Journal Title

      FEBS letters

      Volume: 594 Issue: 4 Pages: 452-461

    • DOI

      10.1002/1873-3468.14028

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Crystal structures of the cell-division protein FtsZ from Klebsiella pneumoniae and Escherichia coli2020

    • Author(s)
      Yoshizawa Takuya、Fujita Junso、Terakado Haruna、Ozawa Mayuki、Kuroda Natsuko、Tanaka Shun-ichi、Uehara Ryo、Matsumura Hiroyoshi
    • Journal Title

      Acta Crystallographica Section F Structural Biology Communications

      Volume: 76 Issue: 2 Pages: 86-93

    • DOI

      10.1107/s2053230x2000076x

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Val143 of human ribonuclease H2 is not critical for, but plays a role in determining catalytic activity and substrate specificity2020

    • Author(s)
      Baba Misato、Kojima Kenji、Nishimura Takuto、Sugiura Takuya、Takita Teisuke、Uehara Ryo、Crouch Robert J.、Yasukawa Kiyoshi
    • Journal Title

      PLOS ONE

      Volume: 15 Issue: 2 Pages: e0228774-e0228774

    • DOI

      10.1371/journal.pone.0228774

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Aicardi-Goutieres syndrome gene Rnaseh2c is a metastasis susceptibility gene in breast cancer2019

    • Author(s)
      Deasy Sarah K.、Uehara Ryo、Vodnala Suman K.、Yang Howard H.、Dass Randall A.、Hu Ying、Lee Maxwell P.、Crouch Robert J.、Hunter Kent W.
    • Journal Title

      PLOS Genetics

      Volume: 15 Issue: 5 Pages: e1008020-e1008020

    • DOI

      10.1371/journal.pgen.1008020

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Unlike the Escherichia coli counterpart, archaeal RNase HII cannot process ribose monophosphate abasic sites and oxidized ribonucleotides embedded in DNA2019

    • Author(s)
      Malfatti Matilde Clarissa、Henneke Ghislaine、Balachander Sathya、Koh Kyung Duk、Newnam Gary、Uehara Ryo、Crouch Robert J.、Storici Francesca、Tell Gianluca
    • Journal Title

      Journal of Biological Chemistry

      Volume: 294 Issue: 35 Pages: 13061-13072

    • DOI

      10.1074/jbc.ra119.009493

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] RNA/DNAハイブリッドの蓄積によるゲノム不安定性2019

    • Author(s)
      上原了、Emily Herm、Kiran Sakhuja、Susana M Cerritelli、Robert J Crouch
    • Organizer
      日本農芸化学会関西支部 第508回講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] Separation of two RNase H2 activities in mammalian cells2019

    • Author(s)
      Ryo Uehara, Emily Herm, Kiran Sakhuja, Susana M Cerritelli, Robert J Crouch
    • Organizer
      第19回日本蛋白質科学会年会
    • Related Report
      2019 Research-status Report
  • [Presentation] RNA/DNAハイブリッド加水分解酵素RNase H2の機能分割2019

    • Author(s)
      上原了、Emily Herm、Naushaba Hasin、Kiran Sakhuja、Susana M Cerritelli、Robert J Crouch
    • Organizer
      酵素・補酵素研究会2019
    • Related Report
      2019 Research-status Report
  • [Presentation] A threshold of ribonucleotide tolerance in genomic DNA for embryonic development2019

    • Author(s)
      Ryo Uehara, Naushaba Hasin, Sakhuja Kiran, Susana M Cerritelli, Robert J Crouch
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Research-status Report

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Published: 2019-09-03   Modified: 2022-01-27  

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