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Development of dynamic structure analysis method in low concentration, small volume photoreceptor membrane protein

Research Project

Project/Area Number 18K14146
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 30020:Optical engineering and photon science-related
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

Obara Yuki  東京農工大学, 工学(系)研究科(研究院), 助教 (10752032)

Project Period (FY) 2018-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords超高速光科学 / ポンプ・プローブ分光 / シングルパルス分光 / 光受容体タンパク質 / フェムト秒 / 超高速分光 / ラマン散乱 / 光受容タンパク質
Outline of Final Research Achievements

In this research project, we developed a new measurement system for observing dynamic structural changes of photoreceptor proteins. This is a combination of single-pulse spectroscopy based on ultrafast spectroscopy using a femtosecond pulsed laser, which reduces measurement noise due to intensity fluctuations of the laser source and enables efficient signal integration. In addition, a protocol for expression and purification of photoreceptor protein by transgenic E. coli was established. Highly purified samples suitable for spectroscopic analysis were obtained.

Academic Significance and Societal Importance of the Research Achievements

光受容体タンパク質を含む膜タンパク質群は多くの疾患に関わっており、その機能を制御する分子標的薬創薬のターゲットとして注目されている。タンパク質の機能は高次構造によって決まっており、生理活性作用時の動態も含めて観測できる検出効率の良い観測方法の開発が必要な状況にある。本研究課題では、新規レーザー分光計測システムの開発と高純度タンパク質試料の生成という2つの異分野の技術開発からアプローチし、独自手法により動態を観察する研究基盤を整えた。

Report

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

    (7 results)

All 2019 2018 Other

All Int'l Joint Research (2 results) Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (4 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Int'l Joint Research] 台湾国立交通大学(その他の国・地域 台湾)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] 国立交通大学(台湾)(その他の国・地域)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Invited Article: Spectral focusing with asymmetric pulses for high-contrast pump?probe stimulated Raman scattering microscopy2018

    • Author(s)
      Ito Terumasa, Obara Yuki, Misawa Kazuhiko
    • Journal Title

      APL Photonics

      Volume: 3 Issue: 9 Pages: 092405-092405

    • DOI

      10.1063/1.5030053

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Pump-Probe Stimulated Raman Scattering Microscopy for Monitoring the Transport of Gaseous Molecules2019

    • Author(s)
      Terumasa Ito, Masahiko Kawagishi, Yuki Obara, Sumio Terada and Kazuhiko Misawa
    • Organizer
      SPIE Photonics West BIOS 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 波形整形パルスを用いた位相変調誘導ラマン散乱顕微鏡2019

    • Author(s)
      伊藤輝将、小原祐樹、三沢和彦
    • Organizer
      応用物理学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Pump-probe stimulated Raman scattering microscopy for monitoring the transport of gaseous molecules2019

    • Author(s)
      Ito Terumasa, Kawagishi Masahiko, Obara Yuki, Terada Sumio, and Misawa Kazuhiko
    • Organizer
      Label-free Biomedical Imaging and Sensing (LBIS) 2019
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Femtosecond time-resolved X-ray absorption spectroscopy using SACLA2018

    • Author(s)
      Yuki Obara, Makina Yabashi, Toshinori Suzuki, and Kazuhiko Misawa
    • Organizer
      The 9th Asian Workshop on Generation and Application of Coherent XUV and X-ray Radiation (9th AWCXR)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2018-04-23   Modified: 2022-08-22  

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