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The Regulation of Replisome Dynamics during Replication Fork Collapse

Research Project

Project/Area Number 15K06955
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Molecular biology
Research InstitutionTokyo University of Pharmacy and Life Science

Principal Investigator

Hashimoto Yoshitami  東京薬科大学, 生命科学部, 助教 (50616761)

Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
KeywordsDNA複製フォーク / レプリソーム / 無細胞複製系 / CDK / ユビキチン化 / Mre11ヌクレアーゼ / 細胞周期 / アフリカツメガエル卵抽出液 / 複製フォーク / p97/VCP / アフリカツメガエル卵無細胞系 / Cdc45 / GINS / ユビキチン / Mre11 / 複製チェックポイント / PLK1
Outline of Final Research Achievements

The DNA Replication machinery, or replisome is displaced from chromatin at the end of DNA replication and during the collapse of stalled replication forks. In this study, I aimed to elucidate the molecular mechanism of the replisome displacement during fork collapse by utilizing cell-free DNA replication system, and found that the replisome displacement was efficiently induced at stalled forks by enforcing cell cycle transit from interphase into mitotic phase. I also demonstrated that this mitotic displacement pathway is a novel one that requires CDK activity, ubiquitylation and Mre11 nuclease activatey.

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (3 results)

All 2017 2016 2015

All Presentation (3 results)

  • [Presentation] 分裂期誘導によるレプリソーム解離機構のin vitro解析2017

    • Author(s)
      橋本吉民
    • Organizer
      第40回日本分子生物学会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Replisome disassembly during replication fork stalling2016

    • Author(s)
      橋本吉民
    • Organizer
      第39回日本分子生物学会年会
    • Place of Presentation
      パシフィコ横浜
    • Year and Date
      2016-11-30
    • Related Report
      2016 Research-status Report
  • [Presentation] 停止した複製フォークからのレプリソーム解離機構の解析2015

    • Author(s)
      橋本吉民
    • Organizer
      第38回日本分子生物学会年会
    • Place of Presentation
      神戸ポートアイランド
    • Year and Date
      2015-12-01
    • Related Report
      2015 Research-status Report

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Published: 2015-04-16   Modified: 2019-03-29  

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