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Functional analysis of the cohesin complex that mediates sister chromatid cohesion.

Research Project

Project/Area Number 19H03160
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 43010:Molecular biology-related
Research InstitutionNational Institute of Genetics

Principal Investigator

Murayama Yasuto  国立遺伝学研究所, 新分野創造センター, 准教授 (60531663)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2021: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2020: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2019: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Keywords染色体分配 / 姉妹染色分体間接着 / コヒーシン / 複製 / 試験管内再構成 / 生化学
Outline of Research at the Start

遺伝情報を担う染色体は、細胞分裂の度に複製され、娘細胞へと正確に分配される。2本の染色分体は、複製直後から物理的に接着して核内に存在する。この接着は、有糸分裂において正確な染色体分配を保証し、故に次世代へ遺伝情報を継承する為に不可欠である。
コヒーシンはリング構造のタンパク質複合体で、接着を形成する本体である。この複合体は、リングの中にDNAを取り込むユニークなDNA結合を持つ。しかし、コヒーシンがどのようにDNAと結合し、接着を形成するのか不明である。本研究は、精製タンパク質を用いて、コヒーシンの機能的なDNA結合反応を試験管内で再構築し、姉妹染色分体間接着形成の分子メカニズムの解明を目指す。

Outline of Final Research Achievements

Sister chromatid cohesion, physical connections between newly replicated chromatids mediated by the cohesin complex is vital for accurate chromosome distribution to daughter cells during cell division. Cohesin is a ring-shaped multisubunit ATPase assembly that topologically entraps DNA to mediate sister chromatid cohesion. Using biochemical reconstitution and yeast genetics, we showed that the loader forms a holo-complex with cohesin on DNA and promotes topological cohesin loading through its DNA binding activity. This study provides a mechanistic insight into the initial step of sister chromatid cohesion mediated by cohesin.

Academic Significance and Societal Importance of the Research Achievements

遺伝情報の担体である染色体の正確な分配・継承は全ての生物に必須であり、その要となる姉妹染色分体間接着の破綻は、染色体異常疾患や不妊等と密接に関連することが報告されている。本研究は、接着形成の本体であるコヒーシンについて、その機能の中核となるトポロジカルDNA結合反応を生化学的再構成により詳細に解析することで、接着形成初期段階の分子機構の一旦を明らかにした。本研究で得られた知見は、染色体研究分野を中心とした基礎研究の貢献に加え、ゲノム不安定性に由来するヒト疾患や機能不全の分子病態の理解に寄与する。

Report

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

    (15 results)

All 2021 2020 2019 Other

All Journal Article (6 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 6 results,  Open Access: 6 results) Presentation (8 results) (of which Int'l Joint Research: 2 results,  Invited: 7 results) Remarks (1 results)

  • [Journal Article] Homology length dictates the requirement for Rad51 and Rad52 in gene targeting in the Basidiomycota yeast Naganishia liquefaciens2021

    • Author(s)
      Palihati Maierdan、Tsubouchi Hideo、Argunhan Bilge、Kajitani Rei、Bakenova Omirgul、Han Yong-Woon、Murayama Yasuto、Itoh Takehiko、Iwasaki Hiroshi
    • Journal Title

      Current Genetics

      Volume: 67 Issue: 6 Pages: 919-936

    • DOI

      10.1007/s00294-021-01201-3

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Rrp1 translocase and ubiquitin ligase activities restrict the genome destabilising effects of Rad51 in fission yeast2021

    • Author(s)
      Muraszko Jakub、Kramarz Karol、Argunhan Bilge、Ito Kentaro、Baranowska Gabriela、Kurokawa Yumiko、Murayama Yasuto、Tsubouchi Hideo、Lambert Sarah、Iwasaki Hiroshi、Dziadkowiec Dorota
    • Journal Title

      Nucleic Acids Research

      Volume: 49 Issue: 12 Pages: 6832-6848

    • DOI

      10.1093/nar/gkab511

    • NAID

      120007124423

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A conserved Ctp1/CtIP C-terminal peptide stimulates Mre11 endonuclease activity2021

    • Author(s)
      Zdravkovic Aleksandar、Daley James M.、Dutta Arijit、Niwa Tatsuya、Murayama Yasuto、Kanamaru Shuji、Ito Kentaro、Maki Takahisa、Argunhan Bilge、Takahashi Masayuki、Tsubouchi Hideo、Sung Patrick、Iwasaki Hiroshi
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 118 Issue: 11 Pages: 1-7

    • DOI

      10.1073/pnas.2016287118

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Real-time tracking reveals catalytic roles for the two DNA binding sites of Rad512020

    • Author(s)
      Ito Kentaro、Murayama Yasuto、Kurokawa Yumiko、Kanamaru Shuji、Kokabu Yuichi、Maki Takahisa、Mikawa Tsutomu、Argunhan Bilge、Tsubouchi Hideo、Ikeguchi Mitsunori、Takahashi Masayuki、Iwasaki Hiroshi
    • Journal Title

      Nature Communications

      Volume: 11 Issue: 1 Pages: 1-17

    • DOI

      10.1038/s41467-020-16750-3

    • NAID

      120007117439

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] DNA Binding by the Mis4Scc2 Loader Promotes Topological DNA Entrapment by the Cohesin Ring2020

    • Author(s)
      Yumiko Kurokawa, Yasuto Murayama
    • Journal Title

      Cell Reports

      Volume: 33 Issue: 6 Pages: 108357-108357

    • DOI

      10.1016/j.celrep.2020.108357

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cooperative interactions facilitate stimulation of Rad51 by the Swi5-Sfr1 auxiliary factor complex.2020

    • Author(s)
      Argunhan B, Sakakura M, Afshar N, Kurihara M, Ito K, Maki T, Kanamaru S, Murayama Y, Tsubouchi H, Takahashi M, Takahashi H, Iwasaki H.
    • Journal Title

      eLife

      Volume: 9

    • DOI

      10.7554/elife.52566

    • NAID

      120007117502

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 高次染色体構造の形成を担うタンパク質複合体の構造と機能2021

    • Author(s)
      村山泰斗
    • Organizer
      日本遺伝学会 第93回大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 染色体構造の形成を担う Smc 複合体の機能と動態2021

    • Author(s)
      村山泰斗
    • Organizer
      第94回日本生化学会大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Biochemical and structural characterizations of the chromosomal cohesin complex2021

    • Author(s)
      黒川裕美子、村山泰斗
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Biochemical analysis of the fission yeast structural maintenance of chromosome complex2021

    • Author(s)
      Yasuto Murayama
    • Organizer
      pombeTalks
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 染色体接着を担うコヒーシン複合体の生化学的解析2020

    • Author(s)
      村山泰斗
    • Organizer
      第93回日本生化学会大会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Interplay between cohesin and replisome-associated proteins for establishment of DNA-DNA interactions2020

    • Author(s)
      Yasuto Murayama
    • Organizer
      The 8th International Symposium of Gunma University Initiative for Advanced Research(GIAR) satellite workshop ~Genome Damage and Stability~
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Replisome-associated Chl1 promotes cohesin-mediated DNA-DNA tethering by overcoming physiological protein blocks.2019

    • Author(s)
      Yumiko Kurokawa, Yasuto Murayama
    • Organizer
      EMBO Workshop: Organization of bacterial and eukaryotic genomes by SMC complexes
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The chromosomal cohesin complex: molecular insights from biochemical reconstitution2019

    • Author(s)
      Yasuto Murayama
    • Organizer
      第42回 日本分子生物学会年会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Remarks]

    • URL

      https://www.nig.ac.jp/nig/ja/research/organization-top/laboratories/murayama

    • Related Report
      2019 Annual Research Report

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

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