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Light-driven oxidation of polysaccharides by photosynthetic pigments and a metalloenzyme

Author

Listed:
  • D. Cannella

    (University of Copenhagen)

  • K. B. Möllers

    (Marine Biological Section, University of Copenhagen)

  • N.-U. Frigaard

    (Marine Biological Section, University of Copenhagen)

  • P. E. Jensen

    (Copenhagen Plant Science Centre, University of Copenhagen)

  • M. J. Bjerrum

    (University of Copenhagen)

  • K. S. Johansen

    (Chalmers University of Technology)

  • C. Felby

    (University of Copenhagen)

Abstract

Oxidative processes are essential for the degradation of plant biomass. A class of powerful and widely distributed oxidative enzymes, the lytic polysaccharide monooxygenases (LPMOs), oxidize the most recalcitrant polysaccharides and require extracellular electron donors. Here we investigated the effect of using excited photosynthetic pigments as electron donors. LPMOs combined with pigments and reducing agents were exposed to light, which resulted in a never before seen 100-fold increase in catalytic activity. In addition, LPMO substrate specificity was broadened to include both cellulose and hemicellulose. LPMO enzymes and pigment derivatives common in the environment of plant-degrading organisms thus form a highly reactive and stable light-driven system increasing the turnover rate and versatility of LPMOs. This light-driven system may find applications in biotechnology and chemical processing.

Suggested Citation

  • D. Cannella & K. B. Möllers & N.-U. Frigaard & P. E. Jensen & M. J. Bjerrum & K. S. Johansen & C. Felby, 2016. "Light-driven oxidation of polysaccharides by photosynthetic pigments and a metalloenzyme," Nature Communications, Nature, vol. 7(1), pages 1-8, September.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11134
    DOI: 10.1038/ncomms11134
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    Cited by:

    1. Eirik G. Kommedal & Camilla F. Angeltveit & Leesa J. Klau & Iván Ayuso-Fernández & Bjørnar Arstad & Simen G. Antonsen & Yngve Stenstrøm & Dag Ekeberg & Francisco Gírio & Florbela Carvalheiro & Svein J, 2023. "Visible light-exposed lignin facilitates cellulose solubilization by lytic polysaccharide monooxygenases," Nature Communications, Nature, vol. 14(1), pages 1-12, December.

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