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Analysis of light-harvesting supramolecular complexes of green photosynthetic bacteria by regulation of structural changes

Research Project

Project/Area Number 20750143
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Chemistry related to living body
Research InstitutionKinki University

Principal Investigator

SAGA Yoshitaka  Kinki University, 理工学部, 講師 (60411576)

Project Period (FY) 2008 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2008: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywords生体機能関連化学 / 光合成 / 緑色光合成細菌 / クロロゾーム / バクテリオクロロフィル / 自己会合体
Research Abstract

Spectral properties and functions of major light-harvesting complexes, chlorosomes, of green photosynthetic bacteria were characterized by induction of changes of their components and supramolecular structures. Isomer composition changes of light-harvesting bacteriochlorophylls in cells of green sulfur photosynthetic bacteria were successfully performed by changes of cultivating conditions. Spectroscopic properties of chlorosomes that were isolated from these bacteria were analyzed. Spectral changes of pigment supramolecules mimicking chlorosomes by external stimuli were also examined. In addition, structure-dependent demetalation properties of light-harvesting bacteriochlorophylls of chlorosomes were unraveled under weakly acidic conditions.

Report

(3 results)
  • 2009 Annual Research Report   Final Research Report ( PDF )
  • 2008 Annual Research Report
  • Research Products

    (18 results)

All 2009 2008

All Journal Article (12 results) (of which Peer Reviewed: 5 results) Presentation (6 results)

  • [Journal Article] Temperature-Dependent Spectral Changes of Self-Aggregates of Zinc Chlorophylls Esterified by Different Linear Alcohols at the 17-Propionate2009

    • Author(s)
      Y.Saga, Y.Nakai, H.Tamiaki
    • Journal Title

      Supramolecular Chemistry 21

      Pages: 738-746

    • Related Report
      2009 Final Research Report
  • [Journal Article] Changes of Aqueous Self-Assemblies of Zinc Chlorophyll Derivatives Possessing a Hydrophilic Chain by Treatment with Organic Solvents2009

    • Author(s)
      Y.Saga, T.Nakagawa, T.Miyatake, H.Tamiaki
    • Journal Title

      Chemistry Letters 38

      Pages: 882-883

    • NAID

      10025546328

    • Related Report
      2009 Final Research Report
  • [Journal Article] Physicochemical Studies of Demetalation of Light-Harvesting Bacteriochlorophyll Isomers Purified from Green Sulfur Photosynthetic Bacteria2009

    • Author(s)
      Y.Hirai, H.Tamiaki, S.Kashimura, Y.Saga
    • Journal Title

      Photochemistry and Photobiology 85

      Pages: 1140-1146

    • Related Report
      2009 Final Research Report
  • [Journal Article] Demetalation Kinetics of Natural Chlorophylls Purified from Oxygenic Photosynthetic Organisms: Effect of the Formyl Groups Conjugated Directly to the Chlorin p-Macrocycle2009

    • Author(s)
      Y.Hirai, H.Tamiaki, S.Kashimura, Y.Saga
    • Journal Title

      Photochemical & Photobiological Sciences 8

      Pages: 1701-1709

    • Related Report
      2009 Final Research Report
  • [Journal Article] Temperature-Dependent Spectral Changes of Self-Aggregates of Zinc Chlorophylls Esterified by Different Linear Alcohols at the 17-Pronionate2009

    • Author(s)
      Y.Saga, Y.Nakai, H.Tamiaki
    • Journal Title

      Supramolecular Chemistry 21巻

      Pages: 738-746

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Changes of Aqueous Self-Assemblies of Zinc Chlorophyll Derivatives Possessing a Hydrophilic Chain by Treatment with Organic Solvents2009

    • Author(s)
      Y.Saga, T.Nakagawa, T.Miyatake, H.Tamiaki
    • Journal Title

      Chemistry Letters 38巻

      Pages: 882-883

    • NAID

      10025546328

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Physicochemical Studies of Demetalation of Light-Harvesting Bacteriochlorophyll Isomers Purified from Green Sulfur Photosynthetic Bacteria2009

    • Author(s)
      Y.Hirai, H.Tamiaki, S.Kashimura, Y.Saga
    • Journal Title

      Photochemistry and Photobiology 85巻

      Pages: 1140-1146

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Demetalation Kinetics of Natural Chlorophylls Purified from Oxygenic Photosynthetic Organisms : Effect of the Formyl Groups Conjugated Directly to the Chlorin π-Macrocycle2009

    • Author(s)
      Y.Hirai, H.Tamiaki, S.Kashimura, Y.Saga
    • Journal Title

      Photochemical & Photobiological Sciences 8巻

      Pages: 1701-1709

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spectroscopic Properties and Bacteriochlorophyll c Isomer Composition of Extramembranous Light-Harvesting Complexes in the Green Sulfur Photosynthetic Bacterium Chlorobium tepidum and Its CT0388-Deleted Mutant under Vitamin B12-Limited Conditions2008

    • Author(s)
      Y.Saga, J.Harada, H.Hattori, K.Kaihara, Y.Hirai, H.Oh-oka, H.Tamiaki
    • Journal Title

      Photochemical & Photobiological Sciences 7

      Pages: 1250-1215

    • Related Report
      2009 Final Research Report
  • [Journal Article] Chlorosomal Self-Aggregation of Zinc Chlorophyll Derivatives in the Presence of Cationic Surfactant Cetyltrimethylammonium Bromide and Organosilanes in Aqueous Phase, Photosynthesis.2008

    • Author(s)
      Y.Saga, H.Kida, Y.Nishikawa, H.Tamiaki
    • Journal Title

      Energy from the Sun

      Pages: 315-318

    • Related Report
      2009 Final Research Report
  • [Journal Article] Spectroscopic Properties and Bacteriochlorophyll c Isomer Composition of Extramembranous Light-Harvesting Complexes in the Green Sulfur Photosynthetic Bacterium Chlorobium tepidum and Its CT0388-Deleted Mutant under Vitamin B_<12>-Limited Conditions2008

    • Author(s)
      Y. Saga
    • Journal Title

      Photochemical & Photobiological Sciences 7

      Pages: 1210-1215

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chlorosomal Self-Aggregation of Zinc Chlorophyll Derivatives in the Presence of Cationic Surfactant Cetyltritnethylammonium Bromide and Organosilanes in Aqueous Phase2008

    • Author(s)
      Y. Saga
    • Journal Title

      Photosynthesis. Energy from the Sun

      Pages: 315-318

    • Related Report
      2008 Annual Research Report
  • [Presentation] クロロフィル分子の長鎖アルキル鎖の改変による色素自己集積型光合成超分子の機能化2009

    • Author(s)
      佐賀佳央
    • Organizer
      日本化学会第89春季年会
    • Place of Presentation
      日本大学船橋キャンパス
    • Year and Date
      2009-03-29
    • Related Report
      2008 Annual Research Report
  • [Presentation] クロロフィル分子の長鎖アルキル鎖の改変による色素自己集積型光合成超分子の機能化2009

    • Author(s)
      佐賀佳央, 西森理里, 中井佑一, 民秋均
    • Organizer
      日本化学会第89春季年会
    • Place of Presentation
      日本大学
    • Related Report
      2009 Final Research Report
  • [Presentation] 長鎖アルキル鎖の異なる亜鉛クロロフィル誘導体で形成される色素集積超分子の動的挙動解析2009

    • Author(s)
      佐賀佳央、民秋均
    • Organizer
      第5回ホスト・ゲスト化学シンポジウム
    • Place of Presentation
      宇都宮大学
    • Related Report
      2009 Final Research Report
  • [Presentation] Characterization of Chlorosomal Self-Assembly of Zinc Chlorophyll Derivatives Esterified by Different Linear Alcohols in Aqueous Solutions2009

    • Author(s)
      Y.Saga, H.Tamiaki
    • Organizer
      18th International Symposium on the Photochemistry and Photophysics of Coordination Compounds
    • Place of Presentation
      ガトーキングダム札幌
    • Related Report
      2009 Final Research Report
  • [Presentation] Characterization of Chlorosomal Self-Assembly of Zinc Chlorophyll Derivatives Esterified by Different Linear Alcohols in Aqueous Solutions2009

    • Author(s)
      佐賀佳央, 民秋均
    • Organizer
      18th International Symposium on the Photochemistry and Photophysics of Coordination Compounds
    • Place of Presentation
      ガトーキングダム札幌(北海道)
    • Related Report
      2009 Annual Research Report
  • [Presentation] 長鎖アルキル鎖の異なる亜鉛クロロフィル誘導体で形成される色素集積超分子の動的挙動解析2009

    • Author(s)
      佐賀佳央、民秋均
    • Organizer
      第5回ホスト・ゲスト化学シンポジウム
    • Place of Presentation
      宇都宮大学(栃木県)
    • Related Report
      2009 Annual Research Report

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Published: 2008-04-01   Modified: 2016-04-21  

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