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Tracking the structural dynamics of myoglobin and its heme structure by gas-phase resonance Raman spectroscopy combined with theory and computation determines

Research Project

Project/Area Number 17K18080
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Physical chemistry
Bio-related chemistry
Research InstitutionGakushuin University

Principal Investigator

Asami Hiroya  学習院大学, 理学部, 助教 (00726078)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2018: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000)
Fiscal Year 2017: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Keywords気相分光 / 共鳴ラマン分光 / 赤外レーザー蒸発 / ミオグロビン / ヘム構造 / ヘムタンパク質 / 変性タンパク / 液滴 / 共鳴ラマン / タンパク質変性 / 動的構造 / イオントラップ
Outline of Final Research Achievements

A novel gas-phase resonance Raman spectroscopy combined with IR-laser ablation of droplet beam was developed in order to observe a local structure of huge biomolecule in the gas phase. By using the developed apparatus, we successfully measured a gas-phase resonance Raman spectrum of heme structure of myoglobin, which is well known as one of heme proteins. The obtained spectrum indicates a six coordination structure, which consists of porphyrin skeletal structure, histidine, and water molecule, is analogous to that in the aqueous solution.

Academic Significance and Societal Importance of the Research Achievements

これまでの生体分子の気相分光では、その構造解明に赤外分光法を用いるアプローチが一般的であった。しかしこの手法を膨大な振動自由度を持つ巨大生体分子に適用するのは容易ではない。そこで本研究ではこれに代わる新たな分光法として気相共鳴ラマン分光法を開発した。この手法では、発色団周囲の振動情報のみに着目するため、振動スペクトルの複雑化を回避できる。本研究では、気相中においてもミオグロビンヘムに水分子が配位することを初めて明らかにした。このことは、生体分子と水との関係を一分子レベルで理解できる計測技術になり得る点で、物理化学の枠を超えた幅広い応用が期待できる。

Report

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

    (12 results)

All 2019 2018 2017

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (10 results) (of which Int'l Joint Research: 5 results,  Invited: 2 results)

  • [Journal Article] Photodissociation spectroscopy of protonated guanosine monophosphate based on IR-laser ablation of droplet beam and quadrupole ion trap mass spectrometry2019

    • Author(s)
      Hiroya Asami, Norishi Kawauchi, Jun-ya Kohno
    • Journal Title

      Chemical Physics Letters

      Volume: 720 Pages: 119-123

    • DOI

      10.1016/j.cplett.2019.02.007

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Photodissociation spectroscopy of hydrated myoglobin ions isolated by IR-laser ablation of a droplet beam: Recovery from pH-denatured structure by gas-phase isolation2019

    • Author(s)
      Hiroya Asami, Rina Kawabata, Norishi Kawauchi, Jun-ya Kohno
    • Journal Title

      Chemistry Letters

      Volume: 48 Issue: 2 Pages: 140-143

    • DOI

      10.1246/cl.180884

    • NAID

      130007590846

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] Local structure analysis of heme protein by resonance Raman spectroscopy in the gas phase2019

    • Author(s)
      Hiroya Asami, Norishi Kawauchi, Rina Kawabata, Jun-ya Kohno
    • Organizer
      日本化学会第99春季年会(2019)
    • Related Report
      2018 Annual Research Report
  • [Presentation] 巨大生体分子の精密構造解析を目指した次世代の気相分光2019

    • Author(s)
      浅見祐也, 河野淳也
    • Organizer
      基礎物性シンポジウム
    • Related Report
      2018 Annual Research Report
  • [Presentation] 液滴分子線赤外レーザー蒸発法を利用したヘムタンパク質の気相共鳴ラマン分光2018

    • Author(s)
      浅見祐也, 河内宜志, 河端里奈, 河野淳也
    • Organizer
      第12回分子科学討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 気液界面に吸着する蛍光核酸にみられる分子構造変化2018

    • Author(s)
      浅見祐也, 高橋佳奈子, 戸村太亮, 河野淳也
    • Organizer
      第12回分子科学討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Novel millisecond time resolved spectroscopy for fluorescent nucleic acids: observation of molecular structural change on the droplet interface2018

    • Author(s)
      Hiroya Asami, Kanako Takahashi, Taisuke Tomura, Jun-ya Kohno
    • Organizer
      Fluorescent Biomolecules and Their Building Blocks - Design and Applications (FB3)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Protein denaturation observed by gas-phase spectroscopy using IR-laser ablation of droplet beam2018

    • Author(s)
      Hiroya Asami, Rina Kawabata, Norishi Kawauchi, Jun-ya Kohno
    • Organizer
      IBBI18 - Conference on Isolated Biomolecules and Biomolecular Interactions
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Gas-phase spectroscopy by using IR ablation of droplet beam: High-sensitivity high-resolution observation of protein denaturation2018

    • Author(s)
      Hiroya Asami
    • Organizer
      Asian International Symposium
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Gas-phase spectroscopy by using IR ablation of droplet beam: High-sensitivity high-resolution observation of protein denaturation2018

    • Author(s)
      Hiroya Asami
    • Organizer
      International Symposium on Molecular Science / Theoretical Chemistry, Cheminformatics Computational Chemistry - Cosponsored by Japan Society of Molecular Science
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 液滴分子線赤外レーザー蒸発法を用いた変性アルブミンイオンの気相分光2017

    • Author(s)
      浅見祐也,長谷川朋子,河野淳也
    • Organizer
      分子科学討論会2017(仙台)
    • Related Report
      2017 Research-status Report
  • [Presentation] Chemical denaturation of bovine serum albumin observed by DUV photoelectron yield spectroscopy combined with IR-laser ablation of droplet beam2017

    • Author(s)
      Hiroya Asami, Tomoko Hasegawa, Jun-ya Kohno
    • Organizer
      The Great Scientific Exchange 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2020-03-30  

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