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Identification of intracellular molecular interactions under living conditions

Research Project

Project/Area Number 15K16562
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Chemical biology
Research InstitutionKochi University

Principal Investigator

YAMAGUCHI Arisa  高知大学, 医学部, 日本学術振興会 特別研究員 (90553157)

Project Period (FY) 2015-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsプロテオミクス / 分子アッセンブリー
Outline of Final Research Achievements

We investigated the issue of whether the EMARS system with fluorescein tyramide (FT) is applicable to analysis of co-clustered molecules in the intracellular organelles. To this end, we constructed HRP or APEX targeted to the ER, Golgi and secretory vesicle. The expressed HRP or APEX in the intracellular organelles were co-localized with fluorescein labeling resulting from the EMARS reaction. These observations indicate that the EMARS reaction with FT as the labeling reagent is applicable to the analysis of co-clustered molecules in the intracellular organelles.

Academic Significance and Societal Importance of the Research Achievements

「HRP発現型・高特異性EMARS法」は、特異性・反応効率性・感度が確保されており、対象分子が微量でも検出可能である。よって、従来、細胞のホモジェネートやオルガネラの分画時に損失・離散していた微量な機能性分子を同定できる可能性が高い。また、従来ホモジェネート時に膜に張り付き、誤同定されていたであろう「コンタミ分子」が検出されない。本研究で確立された細胞内EMARS法を用いれば、多種多様な細胞の細胞内分子機構の解明に貢献するとともに、その解明を目指す生命科学分野の研究者に新しい展望を与えるものと期待される。

Report

(6 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (5 results)

All 2019 2015 Other

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (2 results) Remarks (1 results)

  • [Journal Article] The EMARS Reaction for Proximity Labeling2019

    • Author(s)
      Honke Koichi、Miyagawa-Yamaguchi Arisa、Kotani Norihiro
    • Journal Title

      Methods in Molecular Biology

      Volume: 2008 Pages: 1-12

    • DOI

      10.1007/978-1-4939-9537-0_1

    • ISBN
      9781493995363, 9781493995370
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Each GPI-anchored protein species forms a specific lipid raft depending on its GPI attachment signal.2015

    • Author(s)
      Miyagawa-Yamaguchi A, Kotani N, Honke K
    • Journal Title

      Glycoconj. J.

      Volume: in press Issue: 7 Pages: 531-540

    • DOI

      10.1007/s10719-015-9595-5

    • Related Report
      2015 Research-status Report
    • Peer Reviewed
  • [Presentation] EMARS法は各GPI-アンカータンパク質分子種が固有の脂質ラフトドメインを形成することを明らかにした2015

    • Author(s)
      山口亜利沙、小谷典弘、本家孝一
    • Organizer
      第34回日本糖質学会
    • Place of Presentation
      東京大学 (東京都)
    • Year and Date
      2015-07-31
    • Related Report
      2015 Research-status Report
  • [Presentation] 各GPI-アンカータンパク質分子種はGPI付加シグナルに依存して固有の脂質ラフトを形成する2015

    • Author(s)
      山口亜利沙、小谷典弘、本家孝一
    • Organizer
      第56回日本生化学会 中国・四国支部例会
    • Place of Presentation
      島根大学 (島根県)
    • Year and Date
      2015-05-29
    • Related Report
      2015 Research-status Report
  • [Remarks] 高知大学医学部生化学講座

    • URL

      http://www.kochi-ms.ac.jp/~ff_bichm/

    • Related Report
      2015 Research-status Report

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Published: 2015-04-16   Modified: 2022-11-04  

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