• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

The mechanism of the binding of the bacterial condensin MukBEF to the chromospomal DNA

Research Project

Project/Area Number 17H07328
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Molecular biology
Research InstitutionNational Institute of Genetics

Principal Investigator

Akiyama Koichiro  国立遺伝学研究所, 遺伝形質研究系, 博士研究員 (10800675)

Project Period (FY) 2017-08-25 – 2019-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsバクテリアコンデンシン / 染色体 / MukBEF / 大腸菌 / 部位特異的光架橋実験 / rDNA
Outline of Final Research Achievements

I studied the mechanism of DNA binding of MukB, the E. coli condensin. I made 22 kinds of mutant forms of MukB. In vivo and in vitro experiments by using these MukB mutants revealed the residues important for the DNA binding. These residues are align on the line in the MukB crystal structure previously reported. Based on these results, I propose a novel DNA binding model of MukB.

Academic Significance and Societal Importance of the Research Achievements

コンデンシンタンパク質は大腸菌からヒトまで広く存在する。コンデンシンは一般に一本鎖DNAと二本鎖DNAのいずれにも結合するが、一本鎖DNAへの結合能をどの様に利用しているかに関しては不明点が多い。本研究ではMukBの一本鎖DNA結合に着目することでDNAへの結合の分子機構について新たな機能モデルを示した。この成果は大腸菌にとどまらず、コンデンシンの普遍的な機能の理解に貢献するものである。

Report

(3 results)
  • 2019 Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (8 results)

All 2019 2018

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

  • [Journal Article] In Vivo and In Vitro Assay for Monitoring the Topological Loading of Bacterial Condensins on DNA2019

    • Author(s)
      Koichi Yano, Koichiro Akiyama, and Hironori Niki
    • Journal Title

      Methods in Molecular Biology

      Volume: 2004 Pages: 181-196

    • DOI

      10.1007/978-1-4939-9520-2_14

    • ISBN
      9781493995196, 9781493995202
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] バクテリアコンデンシンMukBの DNA構造を認識したローディング機構2019

    • Author(s)
      秋山光市郎、仁木宏典
    • Organizer
      第37回染色体ワークショップ
    • Related Report
      2018 Annual Research Report
  • [Presentation] バクテリアコンデンシンMukBのDNA構造を認識したローディング機構2019

    • Author(s)
      秋山光市郎、仁木宏典
    • Organizer
      第42回分子生物学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Sensor residues of MukB for the binding to single-stranded DNA2019

    • Author(s)
      Koichiro Akiyama, Hironori Niki
    • Organizer
      Gordon Research Conference; Chromosome Dynamics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 大腸菌コンデンシンMukBのDNA構造を認識したローディング機構2019

    • Author(s)
      秋山光市郎、仁木宏典
    • Organizer
      第16回21世紀大腸菌研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 大腸菌コンデンシンMukBの一本鎖DNA認識機構2019

    • Author(s)
      秋山光市郎、仁木宏典
    • Organizer
      第13回日本ゲノム微生物学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] バクテリアコンデンシンの一本鎖DNA 認識機構2019

    • Author(s)
      秋山光市郎、仁木宏典
    • Organizer
      第36回染色体ワークショップ
    • Related Report
      2018 Annual Research Report
  • [Presentation] Bacterial condensin MukB binds to RNA2018

    • Author(s)
      Koichiro Akiyama, Hironori Niki
    • Organizer
      The 11th 3R&3C Symposium
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research

URL: 

Published: 2017-08-25   Modified: 2021-02-19  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi