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Preparation of light-collecting antenna vesicles using phase separation of lipid membrane for the realization of artificial photosynthesis

Research Project

Project/Area Number 17K06937
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Biofunction/Bioprocess
Research InstitutionNara National College of Technology

Principal Investigator

Nakamura Hidemi  奈良工業高等専門学校, 物質化学工学科, 教授 (70198232)

Co-Investigator(Kenkyū-buntansha) 林 啓太  奈良工業高等専門学校, 物質化学工学科, 講師 (10710783)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywordsプロセス・化学工学 / マイクロ・バイオプロセス / 人工光合成 / 脂質膜 / マイクロ・ナノバイオプロセス
Outline of Final Research Achievements

In the thylakoid membrane in the chloroplast where photosynthesis takes place, the photoexcitation causes energy transfer to the reaction center by aggregation of pigment molecules on membrane. In this study, by utilizing phase separation on model thylakoid membranes formed using lipid membranes of phospholipids or nonionic surfactants, the electron accumulation of chlorophyll a was efficiently performed by controlling the lipid membrane with "nanodomain size", and the artificial light collecting antenna vesicle was prepared. The optimal phase composition and shape of self-assemblies that enhance electron accumulation were clarified, and the possibility of artificial photosynthesis using chlorophyll a was investigated.

Academic Significance and Societal Importance of the Research Achievements

人工光合成をエネルギー生産体として活用するためのモデルチコライド膜の膜特性の基礎的な知見・電子伝達メカニズムの解明を目標として,モデルチラコイド膜の「ナノドメインサイズ」の相分離を応用して,相界面にクロロフィルaを蓄積させることで,より効率的な電子伝達を達成するチラコイド膜を設計した。クロロフィルaのような色素分子を膜界面で自己組織化させることにより,高効率な光捕集アンテナを設計することが可能になれば,他の脂質への応用,さらには有用な光エネルギー変換体のシステム構築への道が開かれることになると思われる。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (8 results)

All 2019 2018 2017 Other

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (5 results) (of which Int'l Joint Research: 1 results) Remarks (1 results)

  • [Journal Article] Aggregation of Chlorophyll a Induced in Self-Assembled Membranes Composed of DMPC and DHPC2019

    • Author(s)
      Shogo Taguchi, Keishi Suga, Keita Hayashi, Makoto Yoshimoto, Yukihiro Okamoto, Hidemi Nakamura, Hiroshi Umakoshi
    • Journal Title

      Colloids and Surfaces B

      Volume: 175 Pages: 403-408

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Characterization of Liposome Membrane Containing Chlorophyll a and It Photosensitized Functions2017

    • Author(s)
      Shogo Taguchi, Keishi Suga, Keita Hayashi, Yukihiro Okamoto, Hidemi Nakamura, Hiroshi Umakoshi
    • Journal Title

      J. Nanosci. Nanotechnol.

      Volume: 17 Pages: 4888-4893

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] クロロフィルa会合体の形成に対するディスク状脂質膜の効果および会合体の光捕集2018

    • Author(s)
      田口 翔悟,菅 恵嗣,林 啓太,岡本 行広,中村 秀美,馬越 大
    • Organizer
      化学工学会 第83年会
    • Related Report
      2017 Research-status Report
  • [Presentation] Characterization of chlorophyll a incorporated liposomes and bicelles as photosynthesis platform2017

    • Author(s)
      Shogo Taguchi, Keishi Suga, Keita Hayashi, Yukihiro Okamoto, Hidemi Nakamura and Hiroshi Umakoshi
    • Organizer
      The 11th International Conference on Separation Science and Technology
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] ディスク状脂質膜の相挙動制御に基づくクロロフィルaの分子配向性制御とその応用2017

    • Author(s)
      田口 翔悟,菅 恵嗣,林 啓太,岡本 行広,中村 秀美,馬越 大
    • Organizer
      化学工学会 第49回秋季大会
    • Related Report
      2017 Research-status Report
  • [Presentation] クロロフィル修飾脂質ディスク膜のミクロ相平衡2017

    • Author(s)
      田口 翔悟,菅 恵嗣,林 啓太,岡本 行広,中村 秀美,馬越 大
    • Organizer
      分離技術会 年会2017
    • Related Report
      2017 Research-status Report
  • [Presentation] Control of Orientation of Chlorophyll a on Lipid Bilayer Membrane and Its Photo-Function2017

    • Author(s)
      田口 翔悟,菅 恵嗣,林 啓太,岡本 行広,中村 秀美,馬越 大
    • Organizer
      化学工学会 第81年会
    • Related Report
      2017 Research-status Report
  • [Remarks] 中村研究室・林研究室 ホームページ

    • URL

      http://chemhp.chem.nara-k.ac.jp/content/images/Private%20Directry/Hayashi/index.html

    • Related Report
      2019 Annual Research Report 2018 Research-status Report 2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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