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

Observation of folding of small proteins with precisely controled hydration

Research Project

Project/Area Number 25410022
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Physical chemistry
Research InstitutionKyushu University

Principal Investigator

Sakota Kenji  九州大学, 理学(系)研究科(研究院), 助教 (80346767)

Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywordsゆらぎ / 水素結合 / 水和 / リボヌクレアーゼA / タンパク質 / 折り畳み / 水和効果 / 赤外分光法 / クラスター / エレクトロスプレーイオン化
Outline of Final Research Achievements

Hydration structure around proteins is one of the most important factors to characterize the stability of the proteins, because they stabilize their native structures in aqueous solutions. Hydrogen bonds (H-bonds), which is the driving force of the formation of hydration structures, break and re-form frequently due to thermal energy. Accordingly, we must take into account of the rearrangement of H-bonds to understand chemical and biological processes in aqueous solutions such as protein folding. In this research project, we produced hydration clusters where the number of water molecules around a solute molecule (i.e., the hydration number) was precisely controlled. Laser multiple resonance spectroscopy was applied to the hydration cluster cations, and we obtained detailed information on the rearrangement and fluctuation of hydration structures in the cluster cations.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (27 results)

All 2016 2015 2014 2013 Other

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Acknowledgement Compliant: 3 results) Presentation (23 results) (of which Int'l Joint Research: 6 results,  Invited: 5 results) Remarks (1 results)

  • [Journal Article] Rearrangements of a Water Molecule in Both Directions between Two Hydrogen-Bonding Sites of 5-Hydroxyindole Cation: Experimental Determination of the Energy Threshold for the Rearrangement2016

    • Author(s)
      T. Ikeda, K. Sakota, H. Sekiya
    • Journal Title

      J. Phys. Chem. A

      Volume: 120 Issue: 11 Pages: 1825-1832

    • DOI

      10.1021/acs.jpca.5b12111

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Macromolecular crowding modifies the impact of specific Hofmeister ions on the coil-globule transition of PNIPAM2015

    • Author(s)
      K. Sakota, D. Tabata, H. Sekiya
    • Journal Title

      J. Phys. Chem. B

      Volume: 119 Issue: 32 Pages: 10334-10340

    • DOI

      10.1021/acs.jpcb.5b01255

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Simultaneous interaction of hydrophilic and hydrophobic solvents with ethylamino neurotransmitter radical cations: Infrared spectra of tryptamine+-(H2O)m-(N2)n clusters (m, n≤3)2015

    • Author(s)
      M. Schuts, K. Sakota, R. Moritz, M. Schmies, T. Ikeda, H. Sekiya, O. Dopfer
    • Journal Title

      J. Phys. Chem. A

      Volume: 119 Issue: 39 Pages: 10035-10051

    • DOI

      10.1021/acs.jpca.5b07408

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] 混み合い環境におけるポリ(N-イソプロピルアクリルアミド)の構造転移に対するホフマイスター効果2016

    • Author(s)
      米山可凜,迫田憲治,関谷 博
    • Organizer
      日本化学会第96回春季年会
    • Place of Presentation
      同志社大学
    • Year and Date
      2016-03-24
    • Related Report
      2015 Annual Research Report
  • [Presentation] ミオグロビンの2状態転移に対するポリエチレングリコールの吸着の効果とその分子量特異性2016

    • Author(s)
      安冨翔太,迫田憲治,関谷博
    • Organizer
      日本化学会第96回春季年会
    • Place of Presentation
      同志社大学
    • Year and Date
      2016-03-24
    • Related Report
      2015 Annual Research Report
  • [Presentation] Molecular level inspection of H-bond rearrangement and fluctuation in the gas phase2015

    • Author(s)
      K. Sakota
    • Organizer
      Pacifichem 2015
    • Place of Presentation
      Hawaii, USA
    • Year and Date
      2015-12-15
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Rearrangement of hydrogen bond network in mono-hydrated 5-hydroxyindole clusters2015

    • Author(s)
      T. Ikeda, K. Sakota, H. Sekiya
    • Organizer
      Pacifichem 2015
    • Place of Presentation
      Hawaii, USA
    • Year and Date
      2015-12-15
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The influence of molecular-weight specific adsorption of polyethylene glycol on two-state transition of myoglobin2015

    • Author(s)
      S. Yasutomi, K. Sakota, H. Sekiya
    • Organizer
      Pacifichem 2015
    • Place of Presentation
      Hawaii, USA
    • Year and Date
      2015-12-15
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] IR spectroscopy of 5-hydroxyindole-methanol in the gas phase: Rearrangement of H-bond2015

    • Author(s)
      K. Yoneyama, K. Sakota, H. Sekiya
    • Organizer
      Pacifichem 2015
    • Place of Presentation
      Hawaii, USA
    • Year and Date
      2015-12-15
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 超高感度バイオセンシングを目指した単一微小液滴顕微分光装置の開発2015

    • Author(s)
      迫田憲治,関谷博
    • Organizer
      第9回分子科学討論会
    • Place of Presentation
      東京工業大学
    • Year and Date
      2015-09-16
    • Related Report
      2015 Annual Research Report
  • [Presentation] 5-ヒドロキシインドール水和クラスターカチオンにおける水和構造組み換えの観測2015

    • Author(s)
      池田貴将,迫田憲治,関谷博
    • Organizer
      第9回分子科学討論会
    • Place of Presentation
      東京工業大学
    • Year and Date
      2015-09-16
    • Related Report
      2015 Annual Research Report
  • [Presentation] ポリ(N-イソプロピルアクリルアミド)の相転移に対する ホフマイスターイオンおよび巨大分子混み合いの複合効果2015

    • Author(s)
      米山可凜,迫田憲治,関谷 博
    • Organizer
      第9回分子科学討論会
    • Place of Presentation
      東京工業大学
    • Year and Date
      2015-09-16
    • Related Report
      2015 Annual Research Report
  • [Presentation] ミオグロビンの2状態転移に対する ポリエチレングリコールの分子量特異的吸着とその効果2015

    • Author(s)
      安冨翔太,迫田憲治,関谷博
    • Organizer
      第9回分子科学討論会
    • Place of Presentation
      東京工業大学
    • Year and Date
      2015-09-16
    • Related Report
      2015 Annual Research Report
  • [Presentation] Laser microscopy for a single levitated microdroplet: its application to FRET of simple dyes2015

    • Author(s)
      K. Sakota
    • Organizer
      Workshop on Nanoscale Atomic and Molecular Systems
    • Place of Presentation
      Fukuoka, Japan
    • Year and Date
      2015-08-20
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Water shuttling in hydrated molecular clusters2015

    • Author(s)
      K
    • Organizer
      Recent Progress in Molecular Science of Korea and Japan
    • Place of Presentation
      Hiroshima, Japan
    • Year and Date
      2015-07-30
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ミオグロビンの2状態転移に対するポリエチレングリコールの添加効果とその分子量特異性2015

    • Author(s)
      安冨翔太,迫田憲治,関谷博
    • Organizer
      九重分子科学セミナー
    • Place of Presentation
      九重共同研修所
    • Year and Date
      2015-07-24
    • Related Report
      2015 Annual Research Report
  • [Presentation] The impact of molecular-weight dependent adsorption of polyethylene glycol on two-state transition of myoglobin2015

    • Author(s)
      安冨翔太,迫田憲治,関谷博
    • Organizer
      9th mini symposium on liquids
    • Place of Presentation
      九州大学
    • Year and Date
      2015-07-04
    • Related Report
      2015 Annual Research Report
  • [Presentation] ミオグロビンの2状態転移に対するポリエチレングリコールの 分子量特異的吸着の効果2015

    • Author(s)
      安冨翔太,迫田憲治,関谷博
    • Organizer
      第52回化学関連支部合同九州大会
    • Place of Presentation
      北九州国際会議場
    • Year and Date
      2015-06-27
    • Related Report
      2015 Annual Research Report
  • [Presentation] 5-ヒドロキシインドール-メタノールクラスターの気相赤外分光:水素結合組み換えの観測2015

    • Author(s)
      米山可凜,迫田憲治,関谷 博
    • Organizer
      第52回化学関連支部合同九州大会
    • Place of Presentation
      北九州国際会議場
    • Year and Date
      2015-06-27
    • Related Report
      2015 Annual Research Report
  • [Presentation] Rearrangement and fluctuation of hydrogen-bonded structures in microhydrated molecular clusters2014

    • Author(s)
      迫田憲治
    • Organizer
      Core-to-Core international symposium
    • Place of Presentation
      ベルリン工科大学
    • Year and Date
      2014-12-15
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] ポリ(N-イソプロピルアクリルアミド)の構造転移に対する 巨大分子の混み合いと塩添加の複合効果2014

    • Author(s)
      田端大樹,迫田憲治,関谷博
    • Organizer
      第37回溶液化学シンポジウム
    • Place of Presentation
      アバンセ佐賀
    • Year and Date
      2014-11-13
    • Related Report
      2014 Research-status Report
  • [Presentation] 温度応答性高分子へのアニオン吸着挙動に対する共存巨大分子の混み合い効果:ランダムコイル-グルビュール転移への影響2014

    • Author(s)
      迫田憲治,田端大樹,関谷博
    • Organizer
      第7回分子科学討論会
    • Place of Presentation
      広島大学
    • Year and Date
      2014-09-21
    • Related Report
      2014 Research-status Report
  • [Presentation] Combined effects of macromolecular crowding and salt-addition on the random coil-globule transition of a thermoresponsive polymer2014

    • Author(s)
      迫田憲治
    • Organizer
      8th Mini-Symposium on liquids
    • Place of Presentation
      岡山大学
    • Year and Date
      2014-07-05
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] Molecular level inspection of structural fluctuation in hydrogen-bonded clusters2014

    • Author(s)
      迫田憲治,関谷博
    • Organizer
      Gordon Research Conference
    • Place of Presentation
      Renaissance Tuscany Il Ciocco
    • Year and Date
      2014-04-29
    • Related Report
      2014 Research-status Report
  • [Presentation] 5-ヒドロキシインドール水和クラスターの孤立気相分光:水和構造ゆらぎの観測2013

    • Author(s)
      迫田憲治,河野友輝,関谷博
    • Organizer
      分子科学討論会
    • Place of Presentation
      京都テルサ
    • Related Report
      2013 Research-status Report
  • [Presentation] 孤立気相中における水素結合揺らぎの研究: ベンジルアルコール水和クラスターの赤外分光2013

    • Author(s)
      池田貴将,迫田憲治,関谷博
    • Organizer
      分子科学討論会
    • Place of Presentation
      京都テルサ
    • Related Report
      2013 Research-status Report
  • [Remarks]

    • URL

      http://www.scc.kyushu-u.ac.jp/Kouzou/str3j.html

    • Related Report
      2014 Research-status Report

URL: 

Published: 2014-07-25   Modified: 2019-07-29  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi