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Structure of a biohybrid photosystem I-platinum nanoparticle solar fuel catalyst

Author

Listed:
  • Christopher J. Gisriel

    (Yale University
    University of Wisconsin-Madison)

  • Tirupathi Malavath

    (Argonne National Laboratory)

  • Tianyin Qiu

    (Yale University)

  • Jan Paul Menzel

    (Yale University)

  • Victor S. Batista

    (Yale University)

  • Gary W. Brudvig

    (Yale University
    Yale University)

  • Lisa M. Utschig

    (Argonne National Laboratory)

Abstract

Biohybrid solar fuel catalysts leverage natural light-driven enzymes to produce valuable fuel products. One useful biological platform for such a system is photosystem I, a pigment-protein complex that captures sunlight and converts it into chemical energy with near unity quantum efficiency, which generates low potential reducing equivalents for metabolism. Realizing and understanding the molecular basis for an approach that utilizes those electrons and stores solar energy as a fuel is therefore appealing. Here, we report the 2.27-Å global resolution cryo-EM structure of a photosystem I complex with bound platinum nanoparticles that catalyzes light-driven H2 production. The platinum nanoparticle binding sites and possible stabilizing interactions are described. Overall, the investigation reveals a direct structural look at a photon-to-fuels photosynthetic biohybrid system.

Suggested Citation

  • Christopher J. Gisriel & Tirupathi Malavath & Tianyin Qiu & Jan Paul Menzel & Victor S. Batista & Gary W. Brudvig & Lisa M. Utschig, 2024. "Structure of a biohybrid photosystem I-platinum nanoparticle solar fuel catalyst," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-53476-y
    DOI: 10.1038/s41467-024-53476-y
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    References listed on IDEAS

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    1. Patrick Jordan & Petra Fromme & Horst Tobias Witt & Olaf Klukas & Wolfram Saenger & Norbert Krauß, 2001. "Three-dimensional structure of cyanobacterial photosystem I at 2.5 Å resolution," Nature, Nature, vol. 411(6840), pages 909-917, June.
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