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Structural basis for the adaptation and function of chlorophyll f in photosystem I

Author

Listed:
  • Koji Kato

    (Okayama University)

  • Toshiyuki Shinoda

    (Tokyo University of Science)

  • Ryo Nagao

    (Okayama University)

  • Seiji Akimoto

    (Kobe University)

  • Takehiro Suzuki

    (Biomolecular Characterization Unit, RIKEN Center for Sustainable Resource Science)

  • Naoshi Dohmae

    (Biomolecular Characterization Unit, RIKEN Center for Sustainable Resource Science)

  • Min Chen

    (School of Life and Environmental Sciences, University of Sydney)

  • Suleyman I. Allakhverdiev

    (K.A. Timiryazev Institute of Plant Physiology RAS
    Institute of Basic Biological Problems RAS
    M.V. Lomonosov Moscow State University
    Moscow Institute of Physics and Technology)

  • Jian-Ren Shen

    (Okayama University)

  • Fusamichi Akita

    (Okayama University
    Japan Science and Technology Agency, PRESTO)

  • Naoyuki Miyazaki

    (Osaka University
    University of Tsukuba)

  • Tatsuya Tomo

    (Tokyo University of Science)

Abstract

Chlorophylls (Chl) play pivotal roles in energy capture, transfer and charge separation in photosynthesis. Among Chls functioning in oxygenic photosynthesis, Chl f is the most red-shifted type first found in a cyanobacterium Halomicronema hongdechloris. The location and function of Chl f in photosystems are not clear. Here we analyzed the high-resolution structures of photosystem I (PSI) core from H. hongdechloris grown under white or far-red light by cryo-electron microscopy. The structure showed that, far-red PSI binds 83 Chl a and 7 Chl f, and Chl f are associated at the periphery of PSI but not in the electron transfer chain. The appearance of Chl f is well correlated with the expression of PSI genes induced under far-red light. These results indicate that Chl f functions to harvest the far-red light and enhance uphill energy transfer, and changes in the gene sequences are essential for the binding of Chl f.

Suggested Citation

  • Koji Kato & Toshiyuki Shinoda & Ryo Nagao & Seiji Akimoto & Takehiro Suzuki & Naoshi Dohmae & Min Chen & Suleyman I. Allakhverdiev & Jian-Ren Shen & Fusamichi Akita & Naoyuki Miyazaki & Tatsuya Tomo, 2020. "Structural basis for the adaptation and function of chlorophyll f in photosystem I," Nature Communications, Nature, vol. 11(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-019-13898-5
    DOI: 10.1038/s41467-019-13898-5
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    Cited by:

    1. Tumelo Mathe & Hamisai Hamandawana, 2023. "Assessing the Chlorophyll-a Retrieval Capabilities of Sentinel 3A OLCI Images for the Monitoring of Coastal Waters in Algoa and Francis Bays, South Africa," Sustainability, MDPI, vol. 15(17), pages 1-17, August.
    2. Koji Kato & Ryo Nagao & Yoshifumi Ueno & Makio Yokono & Takehiro Suzuki & Tian-Yi Jiang & Naoshi Dohmae & Fusamichi Akita & Seiji Akimoto & Naoyuki Miyazaki & Jian-Ren Shen, 2022. "Structure of a tetrameric photosystem I from a glaucophyte alga Cyanophora paradoxa," Nature Communications, Nature, vol. 13(1), pages 1-11, December.

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