A New Factor in Life’s Quest for Energy

Authors

  • Prof. Dr. Bernhard Kräutler

    Corresponding author
    1. Institute of Organic Chemistry & Center of Molecular Biosciences (CMBI), University of Innsbruck, Innrain 52a, 6020 Innsbruck (Austria), Fax: (+43)512-507-2892
    • Institute of Organic Chemistry & Center of Molecular Biosciences (CMBI), University of Innsbruck, Innrain 52a, 6020 Innsbruck (Austria), Fax: (+43)512-507-2892
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  • We thank the Austrian National Science Foundation (FWF, project P-19596) for support of our work.

Abstract

original image

A bacterium sees red: Chlorophyll f (Chl f), a tetrapyrrole displaying unprecedented red-shifted absorption bands, was discovered in cyanobacteria and its structure was deduced by spectroscopic means. The new chromophore of Chl f is likely a result of biological adaptation and biochemical optimization in bacteria in their struggle for survival. It is a sign of life's constant demand for energy obtained from sunlight through photosynthesis.

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