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孤立ナノ空間を有する有機金属錯体での特異な光化学反応の分光解析

Publicly Offered Research

Project AreaMolecular Science for Supra Functional Systems ? Development of Advanced Methods for Exploring Elementary Process
Project/Area Number 22018030
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionInstitute for Molecular Science

Principal Investigator

古谷 祐詞  分子科学研究所, 生命・錯体分子科学研究領域, 准教授 (80432285)

Project Period (FY) 2010 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥4,000,000 (Direct Cost: ¥4,000,000)
Fiscal Year 2011: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 2010: ¥2,000,000 (Direct Cost: ¥2,000,000)
Keywords超分子 / 赤外分光法 / 光化学 / 生体分子 / 生物物理
Research Abstract

本研究では、実在高次系である蛋白質そのものを研究する一方で、その触媒反応の本質のみを取り出したモデル系の研究も重要と考え、自己組織化により形成された「かご状有機金属錯体」のナノ空間中での光化学反応を赤外および可視分光法により明らかにすることを目指している。
これまでにアダマンタンを内包したかご状錯体に対する低温赤外分光解析により、光電子移動によるアダマンタンおよびかご状錯体の構造変化を検出した(Y.Furutani et al.,J.Am.Chem.Soc.,2009)。このような構造変化を実時間で捉えるために、新たに時間分解赤外分光計測系を立ち上げた。かご状錯体のアダマンタンの光酸化反応は不可逆的であるため、繰り返し励起が可能な[Ru(bpy)_3]^<2+>」・2Cl^-を用いて計測条件の最適化を行った。50ナノ秒での光反応誘起赤外差スペクトルの計測が可能であることを確認した。
光受容タンパク質であるバクテリオロドプシンに対して行った時間分解赤外分光計測のデータをSVDやGlobal Fittingにより詳細に解析した。バクテリオロドプシンの内部結合水の0-D伸縮振動やレチナールシッフ塩基のN-D伸縮振動を帰属した。これらの赤外スペクトル変化はプロトン移動が行われる中間体状態でのタンパク質内部の水素結合構造の変化を捉えたものである。
カリウムイオンチャネルであるKcsAはアルカリ金属イオンであるK^+を選択的に透過するイオンチャネルである。そのイオン透過孔での配位構造を明らかにするため、全反射赤外分光解析による研究を平成20年度から継続して行っている。カリウム濃度依存的な赤外差スペクトルを解析することにより、アミドIに特徴的な変化が見られることを明らかにした。

Report

(2 results)
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • Research Products

    (37 results)

All 2012 2011 2010

All Journal Article (9 results) (of which Peer Reviewed: 8 results) Presentation (28 results)

  • [Journal Article] Protein-Bound Water Molecules in Primate Red- and Green-Sensitive Visual Pigments2012

    • Author(s)
      Katayama, et al
    • Journal Title

      Biochemistry

      Volume: 51 Issue: 6 Pages: 1126-1133

    • DOI

      10.1021/bi201676y

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chimeric microbial rhodopsins containing the third cytoplasmic loop of bovine rhodopsin2011

    • Author(s)
      A.Nakatsuma, T.Yamashita, K.Sasaki, A.Kawanabe, K.Inoue, Y.Furutani, Y.Shichida, H.Kandori
    • Journal Title

      Biophys.J

      Volume: 100 Issue: 8 Pages: 1874-1882

    • DOI

      10.1016/j.bpj.2011.02.054

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Sensory rhodopsin-I as a Bidirectional Switch : Opposite conformational changes from the same photoisomerization2011

    • Author(s)
      J.Sasaki, H.Takahashi, Y.Furutani, H.Kandori, J.L.Spudich
    • Journal Title

      Biophys.J.

      Volume: 100 Issue: 9 Pages: 2178-2183

    • DOI

      10.1016/j.bpj.2011.03.026

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 全反射赤外分光法による膜タンパク質の構造機能相関研究の現状と展望2011

    • Author(s)
      古谷祐詞
    • Journal Title

      化学と工業

      Volume: 64 Pages: 694-695

    • NAID

      10029523383

    • Related Report
      2011 Annual Research Report
  • [Journal Article] Sodium or Lithium Ion-Binding-Induced Structural Changes in the K-ring of V-ATPase from Enterococcus hirae Revealed by ATR-FTIR Spectroscopy2011

    • Author(s)
      Yuji Furutani, et al.
    • Journal Title

      J.Am.Chem.Soc.

      Volume: 133 Pages: 2860-2863

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Low-Temperature FTIR Study of Gloeobacter Rhodopsin : Presence of Strongly Hydrogen-Bonded Water and Long-Range Structural Protein Perturbation upon Retinal Photoisomerization2010

    • Author(s)
      Kyohei Hashimoto, et al.
    • Journal Title

      Biochemistry

      Volume: 49 Pages: 3343-3350

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Protein Fluctuations as the Possible Origin of the Thermal Activation of Rod Photoreceptors in the Dark2010

    • Author(s)
      Victor Lorenz Fonfria, et al.
    • Journal Title

      J.Am.Chem.Soc.

      Volume: 132 Pages: 5693-5703

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] An FTIR Study of the Photoreaction of Bovine Rhodopsin in the Presence of Hydroxylamine2010

    • Author(s)
      Kouta Katayama, et al.
    • Journal Title

      J.Phys.Chem.B

      Volume: 114 Pages: 9039-9046

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Molecular insight into intrinsic heme distortion in ligand binding in hemoprotein2010

    • Author(s)
      Saburo Neya, et al.
    • Journal Title

      Biochemistry

      Volume: 49 Pages: 5642-5650

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] 全反射赤外分光法によるMg^<2+>輸送体MgtEのイオン選択機構の解析2012

    • Author(s)
      木村哲就
    • Organizer
      2011年度日本生物物理学会中部支部講演会
    • Place of Presentation
      名古屋大学(愛知県)
    • Year and Date
      2012-03-19
    • Related Report
      2011 Annual Research Report
  • [Presentation] Time-resolved infrared study on the light-driven chloride ion pump protein2012

    • Author(s)
      Yuji Furutani
    • Organizer
      4th Japan-Korea Seminar on Biomolecular Sciences : Experiments and Simulations
    • Place of Presentation
      東大寺総合文化センター(奈良県)(招待講演)
    • Year and Date
      2012-01-10
    • Related Report
      2011 Annual Research Report
  • [Presentation] Ion-selective mechanism of Mg^<2+> transporter MgtE studied by attenuated total reflection FTIR spectroscopy2012

    • Author(s)
      Tetsunari Kimura
    • Organizer
      4th Japan-Korea Seminar on Biomolecular Sciences : Experiments and Simulations
    • Place of Presentation
      東大寺総合文化センター(奈良県)
    • Year and Date
      2012-01-10
    • Related Report
      2011 Annual Research Report
  • [Presentation] Surface-enhanced ATR FTIR difference spectroscopy from a halorhodopsin monolayer on gold : dependence of spectral features on film properties2012

    • Author(s)
      Hao Guo
    • Organizer
      5th International Symposium on Nanomedicine (ISNM2011)
    • Place of Presentation
      名古屋大学(愛知県)
    • Related Report
      2011 Annual Research Report
  • [Presentation] Stepwise conformational changes upon anion pumping during the pharaonis halorhodopsin photocycle revealed by H/D unexchangeable amide-A vibrations2012

    • Author(s)
      Tetsunari Kimura
    • Organizer
      5th International Symposium on Nanomedicine (ISNM2011)
    • Place of Presentation
      名古屋大学(愛知県)
    • Related Report
      2011 Annual Research Report
  • [Presentation] Surface-enhanced ATR-FTIR difference spectroscopy from a halorhodopsin monolayer on gold island films2011

    • Author(s)
      Hao Guo
    • Organizer
      The 49th Annual Meeting of the Biophysical Society of Japan
    • Place of Presentation
      兵庫県立大学(兵庫県)
    • Year and Date
      2011-09-18
    • Related Report
      2011 Annual Research Report
  • [Presentation] Ion-selective mechanism of Mg^<2+> transporter MgtE studied by attenuated total reflection FTIR spectroscopy2011

    • Author(s)
      Tetsunari Kimura
    • Organizer
      The 49th Annual Meeting of the Biophysical Society of Japan
    • Place of Presentation
      兵庫県立大学(兵庫県)
    • Year and Date
      2011-09-18
    • Related Report
      2011 Annual Research Report
  • [Presentation] Development of stopped-flow attenuated total reflection FTIR spectroscopy for detecting dynamic structural changes in ion transporters2011

    • Author(s)
      Yuji Furutani
    • Organizer
      The 49th Annual Meeting of the Biophysical Society of Japan
    • Place of Presentation
      兵庫県立大学(兵庫県)(招待講演)
    • Year and Date
      2011-09-17
    • Related Report
      2011 Annual Research Report
  • [Presentation] Ion-protein interactions studied by ATR-FTIR spectroscopy2011

    • Author(s)
      Yuji Furutani
    • Organizer
      14th Asian Chemical Congress
    • Place of Presentation
      Queen Sirikit Convention Center (Bangkok, Thailand)(招待講演)
    • Year and Date
      2011-08-11
    • Related Report
      2011 Annual Research Report
  • [Presentation] 赤外分光法でみるV型ATPaseのイオン結合・解離に伴う構造変化2011

    • Author(s)
      古谷祐詞
    • Organizer
      平成22年度日本生物物理学会中部支部討論会
    • Place of Presentation
      名古屋大学野依学術交流センター(愛知)
    • Year and Date
      2011-03-31
    • Related Report
      2010 Annual Research Report
  • [Presentation] Ion-binding-induced Structural Changes in Membrane Proteins Studied by ATR-FTIR Spectroscopy2011

    • Author(s)
      Yuji Furutani
    • Organizer
      Third Korea-Japan Seminars on Biomolecular Sciences : -Experiments and Simulations
    • Place of Presentation
      Lotte Hotel, Jeju,(韓国)
    • Year and Date
      2011-02-27
    • Related Report
      2010 Annual Research Report
  • [Presentation] FTIR Studies of Membrane Proteins2011

    • Author(s)
      Yuji Furutani
    • Organizer
      The Winter School of Sokendai/Asian CORE Program "Frontiers of Molecular Science-Life, Material, Energy, and Space"
    • Place of Presentation
      岡崎コンファレンスセンター(愛知)
    • Year and Date
      2011-02-21
    • Related Report
      2010 Annual Research Report
  • [Presentation] 全反射赤外分光法によるMg^<2+>輸送体MgtEのイオン選択機構の解析2011

    • Author(s)
      木村哲就
    • Organizer
      第11回日本蛋白質科学会年会
    • Place of Presentation
      ホテル阪急エキスポパーク(大阪府)
    • Related Report
      2011 Annual Research Report
  • [Presentation] Spectroscopic Analysis of Specific Photochemical Reactions in an Isolated Nanospece Formed by a Well-Designed Organo-Metal Complex2011

    • Author(s)
      Yuji Furutani
    • Organizer
      The 5^<th> Symposium Molecular Science for Supra Functional Systems-Development of Advanced Methods for Exploring Elementary Processes-
    • Place of Presentation
      Royton Sapporo(北海道)
    • Related Report
      2011 Annual Research Report
  • [Presentation] SEIRA difference spectroscopy on a halorhodopsin monolayer tethered on gold surface2011

    • Author(s)
      Hao Guo
    • Organizer
      5th Asia and Oceania Conference on Photobiology
    • Place of Presentation
      奈良県新公会堂(奈良県)
    • Related Report
      2011 Annual Research Report
  • [Presentation] Modification of Gold Thin Film Suitable for Surface-enhanced Vibrational Spectroscopy on Membrane Proteins2010

    • Author(s)
      Hao Guo
    • Organizer
      4^<th> International Symposium on Nanomedicine (ISNM2010)
    • Place of Presentation
      岡崎コンファレンスセンター(愛知)
    • Year and Date
      2010-11-30
    • Related Report
      2010 Annual Research Report
  • [Presentation] 孤立ナノ空間を有する有機金属錯体での特異な光化学反応の分光解析2010

    • Author(s)
      古谷祐詞
    • Organizer
      特定領域研究「高次系分子科学」第4回公開シンポジウム
    • Place of Presentation
      東北大学片平さくらホール(宮城)
    • Year and Date
      2010-11-25
    • Related Report
      2010 Annual Research Report
  • [Presentation] 時間分解FTIR差スペクトル計測によるファラオニスハロロドプシンの陰イオン輸送過程での構造変化解析2010

    • Author(s)
      木村哲就
    • Organizer
      第36回日本生体エネルギー研究会&特定領域研究「革新的ナノバイオ」合同シンポジウム
    • Place of Presentation
      大阪大学銀杏会館(大阪)
    • Year and Date
      2010-11-19
    • Related Report
      2010 Annual Research Report
  • [Presentation] X-D伸縮振動領域を含めた時間分解赤外分光法によるバクテリオロドプシンの光誘起構造変化解析2010

    • Author(s)
      古谷祐詞
    • Organizer
      第36回日本生体エネルギー研究会&特定領域研究「革新的ナノバイオ」合同シンポジウム
    • Place of Presentation
      大阪大学銀杏会館(大阪)
    • Year and Date
      2010-11-18
    • Related Report
      2010 Annual Research Report
  • [Presentation] Modification of Gold Thin Film Suitable for Surface-enhanced Vibrational Spectroscopy on Membrane Proteins2010

    • Author(s)
      Hao Guo
    • Organizer
      The Overseas Sokendai Lecture in Bangkok 2010
    • Place of Presentation
      Chulalongkorn University, Bangkok,(タイ)
    • Year and Date
      2010-10-20
    • Related Report
      2010 Annual Research Report
  • [Presentation] Stimulus-Induced Difference Infrared Spectroscopy for Membrane Proteins ; Visual and Archaeal-type Rhodopsins, and Flagella Motor Protein2010

    • Author(s)
      Yuji Furutani
    • Organizer
      Indo-Japan Joint Workshop on "New Frontiers of Molecular Spectroscopy ; from Gas Phase to Proteins"
    • Place of Presentation
      Hotel Kitano Plaza Rokkoso(兵庫)
    • Year and Date
      2010-09-28
    • Related Report
      2010 Annual Research Report
  • [Presentation] Time-resolved FT-IR measurement of X-D stretching vibrations of Bacteriorhodopsin in micro- to mill- second time range2010

    • Author(s)
      Yuji Furutani
    • Organizer
      The 48th Annual Meeting of the Biophysical Society of Japan
    • Place of Presentation
      東北大学(宮城)
    • Year and Date
      2010-09-20
    • Related Report
      2010 Annual Research Report
  • [Presentation] Conformational Changes upon Chloride-ion Pumping During the pharaonis Halorhodopsin Photocycle Studied by Time-resolved FTIR Spectroscopy2010

    • Author(s)
      Tetsunari Kimura
    • Organizer
      The 48th Annual Meeting of the Biophysical Society of Japan
    • Place of Presentation
      東北大学(宮城)
    • Year and Date
      2010-09-20
    • Related Report
      2010 Annual Research Report
  • [Presentation] 時間分解赤外分光法によるバクテリオロドプシンのX-D伸縮振動の解析2010

    • Author(s)
      古谷祐詞
    • Organizer
      第4回分子科学討論会
    • Place of Presentation
      大阪大学(大阪)
    • Year and Date
      2010-09-15
    • Related Report
      2010 Annual Research Report
  • [Presentation] ロドプシン-KcsA融合蛋白質の発現とFTIRによる構造変化解析2010

    • Author(s)
      古谷祐詞
    • Organizer
      特定領域研究「高次系分子科学」第9回ミニ公開シンポジウム
    • Place of Presentation
      サギセミナーセンター(広島)
    • Year and Date
      2010-08-30
    • Related Report
      2010 Annual Research Report
  • [Presentation] 赤外分光法によるイオン輸送蛋白質の構造変化解析2010

    • Author(s)
      古谷祐詞
    • Organizer
      アドバンス生命理学特論:世話人;須藤雄気准教授(名大・院理)
    • Place of Presentation
      名古屋大学(愛知)
    • Year and Date
      2010-07-13
    • Related Report
      2010 Annual Research Report
  • [Presentation] 孤立ナノ空間を有する有機金属錯体での特異な光化学反応の分光解析2010

    • Author(s)
      古谷祐詞
    • Organizer
      特定領域研究「高次系分子科学」第5回合同班会議
    • Place of Presentation
      南淡路ロイヤルホテル(兵庫)
    • Year and Date
      2010-05-25
    • Related Report
      2010 Annual Research Report
  • [Presentation] Interaction between Membrane Proteins and Ions Studied by ATR-FTIR Spectroscopy : A Potential Tool for Drug Screening2010

    • Author(s)
      Yuji Furutani
    • Organizer
      BIT's 1^<st> Annual International Conference of Medichem-2010
    • Place of Presentation
      Beijing International Convention Center, Beijing,(中国)
    • Year and Date
      2010-05-19
    • Related Report
      2010 Annual Research Report

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Published: 2010-08-23   Modified: 2018-03-28  

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