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色素自己集積型光合成アンテナの形成プロセス解明とその機能評価

Research Project

Project/Area Number 17J08860
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section国内
Research Field Bio-related chemistry
Research InstitutionRitsumeikan University

Principal Investigator

寺村 美里  立命館大学, 生命科学研究科, 特別研究員(PD)

Project Period (FY) 2017-04-26 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2018: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2017: ¥900,000 (Direct Cost: ¥900,000)
Keywordsバクテリオクロロフィル / 酵素反応 / 生合成 / 光合成細菌 / 光合成色素
Outline of Annual Research Achievements

本研究の目的である、光合成色素合成酵素およびクロロフィル生合成経路の解明と、光捕集アンテナの形成過程を生体外で再現する系の構築を行うため、以下のように研究を進めてきた。
緑色硫黄細菌・緑色繊維状細菌・クロラシドバクテリウム由来の3位ビニル基水和酵素(BchF, BchV)、緑色硫黄細菌由来の13ー2位メトキシカルボニル基脱離酵素(BciC)、紅色細菌由来のクロロフィリド酸化還元酵素(COR)、緑色硫黄細菌・紅色細菌由来の3位酸化還元酵素(BchC)の計5種類のクロロフィル生合成酵素の調製を行った。基質分子は光合成生物から抽出した天然色素を化学修飾することで得た。多様な基質分子を用いて、上記の酵素による生体外での反応を高速液体クロマトグラフィーや質量分析・紫外可視分光法を用いて分析した。立体選択性も含め、基質の周辺置換基および骨格構造の修飾が酵素活性に与える影響を詳細に調べた。特に当該年度では、これまでのような酵素一つ一つの機能について調べるだけでなく、複数の酵素が共存する系においてそれらの酵素が協働することを生体外で見出した。複数の酵素が同じ系内に存在するという、より生体内に近い環境を再現することで、今後のクロロフィル生合成系の解明のための重要な手がかりになるだろうと確信する。これらの研究成果の一部は、国際論文2報、国際学会での口頭発表1件、国内でのポスター発表1件を通じて報告を行った。

Research Progress Status

平成30年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

平成30年度が最終年度であるため、記入しない。

Report

(2 results)
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (14 results)

All 2019 2018 2017

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (9 results) (of which Int'l Joint Research: 6 results,  Invited: 2 results)

  • [Journal Article] Stereoselective C3-substituent modification and substrate channeling by oxidoreductase BchC in bacteriochlorophyll a biosynthesis2019

    • Author(s)
      Misato Teramura, Yusuke Tsukatani, Jiro Harada, Mitsuaki Hirose, Hitoshi Tamiaki
    • Journal Title

      FEBS Letters

      Volume: 593 Issue: 8 Pages: 799-809

    • DOI

      10.1002/1873-3468.13372

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] In vitro demethoxycarbonylation of various chlorophyll analogs by a BciC enzyme2018

    • Author(s)
      Teramura Misato、Harada Jiro、Tamiaki Hitoshi
    • Journal Title

      Photosynthesis Research

      Volume: 139 Issue: 1-3 Pages: 163-171

    • DOI

      10.1007/s11120-018-0573-1

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] In vitro enzymatic assays of photosynthetic bacterial 3-vinyl hydratases for bacteriochlorophyll biosyntheses2018

    • Author(s)
      Teramura Misato、Harada Jiro、Tamiaki Hitoshi
    • Journal Title

      Photosynthesis Research

      Volume: 135 Issue: 1-3 Pages: 319-328

    • DOI

      10.1007/s11120-017-0415-6

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] In vivo energy transfer from bacteriochlorophyll c, d, e, or f to bacteriochlorophyll a in the wild-type and mutant cells of the green sulfur bacterium Chlorobaculum limnaeum2018

    • Author(s)
      J. Harada, Y. Shibata, M. Teramura, T. Mizoguchi, Y. Kinoshita, K. Yamamoto, H. Tamiaki
    • Journal Title

      ChemPhotoChem

      Volume: 2 Issue: 3 Pages: 190-195

    • DOI

      10.1002/cptc.201700164

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Semi-synthesis and HPLC analysis of (bacterio)chlorophyllides possessing a propionic acid residue at the C17-position2018

    • Author(s)
      M. Teramura, H. Tamiaki
    • Journal Title

      J. Porphyrins Phthalocyanines

      Volume: 22 Issue: 05 Pages: 423-436

    • DOI

      10.1142/s1088424618500347

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Presentation] バクテリオクロロフィル合成系における立体選択的酵素反応2018

    • Author(s)
      寺村美里、塚谷祐介、民秋均
    • Organizer
      第26回光合成セミナー2018
    • Related Report
      2018 Annual Research Report
  • [Presentation] Stereoselective enzymatic reactions regulate bacteriochlorophyll biosynthetic pathways2018

    • Author(s)
      Misato Teramura, Jiro Harada, Yusuke Tsukatani, Tadashi Mizoguchi, Hitoshi Tamiaki
    • Organizer
      Asia-Oceania International Congress on Photosynthesis
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Bacteriochlorophyll biosynthetic pathways based on the in vitro enzymatic study2018

    • Author(s)
      Teramura Misato
    • Organizer
      1st Joint Seminar between Prof. Tamiaki’s Group and Prof. Bao’s Group
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 緑色硫黄細菌Chlorobaculum limnaeumを用いたバクテリオクロロフィルc, d, eおよびfの生体内でのエネルギー移動効率の比較2018

    • Author(s)
      原田二朗、柴田 穣、寺村美里、溝口 正、木下雄介、山本 健、民秋 均
    • Organizer
      日本化学会第98春季年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] バクテリオクロロフィルa合成系で働く酸化還元酵素BchCによる立体選択的酸化還元反応2017

    • Author(s)
      寺村美里、塚谷祐介、民秋 均
    • Organizer
      第8回光合成学会年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] New insights into the stereoselective dehydrogenation process in the biosynthesis of bacteriochlorophyll a2017

    • Author(s)
      Teramura Misato、Tsukatani Yusuke、Tamiaki Hitoshi
    • Organizer
      Thirteenth International Workshop on Supramolecular Nanoscience of Chemically Programed Pigments
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] In vitro Stereoselective Oxidation and Reduction by BchC Oxidoreductase for Bacteriochlorophyll a Biosynthesis2017

    • Author(s)
      Teramura Misato、Tsukatani Yusuke、Tamiaki Hitoshi
    • Organizer
      International Conference on Tetrapyrrole Photoreceptors of Photosynthetic Organisms
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Bacteriochlorophyll biosynthetic pathways based on the in vitro enzymatic study2017

    • Author(s)
      Teramura Misato、Harada Jiro、Tsukatani Yusuke、Tamiaki Hitoshi
    • Organizer
      International Conference on Tetrapyrrole Photoreceptors of Photosynthetic Organisms
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] In vitro assay of stereoselective enzymatic reactions in bacteriochlorophyll biosynthetic pathways2017

    • Author(s)
      Teramura Misato、Harada Jiro、Tsukatani Yusuke、Mizoguchi Tadashi、Tamiaki Hitoshi
    • Organizer
      8th International Conference “Photosynthesis and Hydrogen Energy Research for Sustainability 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited

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Published: 2017-05-25   Modified: 2024-03-26  

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