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

Electron-Transfer Reactions of Chemically Modified Hemoproteins and Their Model Compounds

Research Project

Project/Area Number 08454209
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Inorganic chemistry
Research InstitutionNara Women's University

Principal Investigator

TSUKAHARA Keiichi  Nara Women's University, Department of Chemistry, Professor, 理学部, 教授 (70112117)

Co-Investigator(Kenkyū-buntansha) KATO Masako  Nara Women's University, Department of Chemistry, Associate Professor, 理学部, 助教授 (80214401)
Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥7,500,000 (Direct Cost: ¥7,500,000)
Fiscal Year 1997: ¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 1996: ¥4,400,000 (Direct Cost: ¥4,400,000)
KeywordsModified Myoglobin / Co(III) Attached Myoglobin / Photo-Induced Electron Transfer / N-Alkylporphyrin / Quinoline / Diethylenetriaminepentaacetic Acid / Viologen / Aminopolycarboxylate / 亜鉛置換ミオグロビン / シトクロームc / アクリジン
Research Abstract

1) Metmyoglobin modified with diethylenetriaminepentaacetic acid (metMbDTPA) binds Cu(II) and Co(II) to form metMb{Cu^<II>(dtpa)} and metMb{Co^<II>(dtpa)}, respectively. The latter was further oxidized by K_3[Fe(CN)_6] to form metMb{Co^<III>(dtpa)}. These compounds were characterized by an ESR and an atomic absorption spectro-scopies and a cyclic voltammetry. 2) The intra- and intermolecular electron-transfer reactions of one electron-reduced deoxyMb{Co^<III>(dtpa)} were investigated by spectrophotometrically. The intramolecular electron-transfer reaction depends on the attached site of DTPA.3) The heme iron of metMbDTPA was replaced by a Zn(II) ion and the excited singlet and triplet states of ZnMbDTPA were efficiently quenched by a bound Cu(II) ion. The excited triplet state of ZnMbDTPA was also quenched intramolecularly by the oxidized form of cytochrome c. 4) Viologen or quinoliniumlinked N-alkylporphyrin dyads were synthesized and characterized. The orientation and distance effects on the rates of the quenching and photo-induced electron-transfer reactions were investigated in acetonitrile and propylene glycol. Orthogonal orientation of viologen or quinolinium ion against the porphyrin plane decelerated the electron- and energy-transfer reaction rates. 5) The stereoselective electron-transfer reactions between hemoproteins and chiral viologen-radical cations were investigated. The (S,S) -isomers of chiral viologens preferentially reduced metmyoglobin and cytochrome c.

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] K.Tsukahara, C.Kimura: "Photoinduced electron-transfer reaction between cytochrome c and zinc myoglobin modified with diethylenetriaminepentaacetic acid" J.Electroanal.Chem.438(1/2). 67-70 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Tsukahara, C.Kimura, J.Kaneko, K.Abe, M.Matsui, T.Hara: "Stereoselective photoinduced electron-transfer reactions of zinc myoglobins with optically active viologens" Inorg.Chem.36(16). 3520-3524 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Tsukahara, J.Kaneko, T.Miyaji, T.Hara, M.Kato, M.Kimura: "Stereoselective luminescence quenching in the complex of excited triplet state of Δ-tris- (2,2′-bipyridine) ruthenium (II) with optically active viologens in an aqueous solution" Chem.Lett.455-456 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Tsukahara, C.Kimura, T.Sakurai: "Intracomplex quenching by copper (II) ion of excited singlet and triplet states of zinc myoglobin modified with diethylenetriaminepentaacetic acid" Chem.Lett.601-602 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Tsukahara, K.Abe, M.Matsuoka: "Chiral recognition in disproportionation of monoradical cation of optically active bisviologen in an aqueous solution" Chem.Lett.941-942 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Tsukahara, K.Ito, M.Matsui, M.Sudo, Y.Onoue: "Photophysical properties of N-alkylporphyrins and their metalloporphyrins linked with quinolinium ion in solution" Chem.Phys.Lett.281(4/6). 261-266 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Tsukahara, J.Kaneko, T.Miyaji, and K.Abe: "Chargetransfer interaction between bipyridinium and naphthyl groups of optically active viologens in an aqueous solution" Tetrahedron Lett.37 (18). 3149-3152 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Tsukahara and C.Kimura: "Photoinduced electron-transfer reaction between cytochrome c and zinc myoglobin modified with diethylenetriaminepentaacetic acid" J.Electroanal.Chem.438 (1/2). 67-70 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Tsukahara, C.Kimura, J.Kaneko, K.Abe, M.Matsui, and T.Hara: "Stereoselective photoinduced electron-transfer reactions of zinc myoglobins with optically active viologens" Inorg.Chem.36 (16). 3520-3524 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Tsukahara, J.Kaneko, T.Miyaji, T.Hara, M.Kato, and K.Kimura: "Stereoselective luminescence quenching in the complex of excited triplet state of DELTA-tris (2,2'-bipyridine) - ruthenium(II) with optically active viologens in an aqueous solution" Chem.Lett.455-456 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Tsukahara, C.Kimura, and T.Sakurai: "Intracomplex quenching by copper(II) ion of excited singlet and triplet states of zinc myoglobin modified with diethylenetriamine-pentaacetic acid" Chem.Lett.601-602 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Tsukahara, K.Abe, and M.Matsuoka: "Chiral recognition in disproportionation of monoradical cation of optically active bisviologen in an aqueous solution" Chem.Lett.941-942 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Tsukahara, K.Ito, M.Matsui, M.Sudo, and Y.Onoue: "Photophysical properties of N-alkylporphyrins and their metalloporphyrins linked with quinolinium ion in solution" Chem.Phys.Lett.281 (4/6). 261-266 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Tsukahara,C.Kimura: "Photoinduced electron-transfer reaction between cytochrome c and zinc myoglobin modified with diethylenetriaminepentaacetic acid" J.Electroanal.Chem.438 (1/2). 67-70 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Tsukahara,C.Kimura,J.Kaneko,K.Abe,M.Matsui,T.Hara: "Stereoselective photoinduced electron-transfer reactions of zinc myoglobins with optically active viologens" Inorg.Chem.36 (16). 3520-3524 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Tsukahara,J.Kaneko,T.Miyaji,T.Hara,M.Kato,M.Kimura: "Stereoselective luminescence quenching in the complex of excited triplet state of Δ-tris (2,2'-bipyridine) ruthenium (II) with optically active viologens in an aqueous solution" Chem.Lett.455-456 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Tsukahara,C.Kimura,T.Sakurai: "Intracomplex quenching by copper (II) ion of excited singlet and triplet states of zinc myoglobin modified with diethylenetriaminepentaacetic acid" Chem.Lett.601-602 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Tsukahara,K.Abe,M.Matsuoka: "Chiral recognition in disproportionation of monoradical cation of optically active bisviologen in an aqueous solution" Chem.Lett.941-942 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Tsukahara,K.Ito,M.Matsui,M.Sudo,Y.Onoue: "Photophysical properties of N-alkylporphyrins and their metalloporphyrins linked with quinolinium ion in solution" Chem.Phys.Lett.281 (4/6). 261-266 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Tsukahara,J.Kaneko,T.Miyaji,K.Abe: "Charge-transfer interaction between bipyridinium and naphthyl groups of optically active viologens in an aqueous solution" Tetrahedron Lett.37(17). 3149-3152 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] K.Tsukahara,C.Kimura: "Photoinduced electron-transfer reaction between cytochrome c and zinc myoglobin modified with diethylenetriaminepentaacetic acid" J.Electroanal.Chem.in press (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] K.Tsukahara,J.Kaneko,T.Miyaji,T.Hara,M.Kato,M.Kimura: "Stereoselective Iuminescence quenching in the complex of excited triplet state of Δ-tris(2,2′-bipyridine)ruthenium(II)with optically active viologens in an aqueous solution" Chem.Lett.(in press). (1997)

    • Related Report
      1996 Annual Research Report

URL: 

Published: 1996-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi