Harnessing Nature’s Blueprint for Solar Energy Innovation

Abstract Photosynthesis Electricity Art

Research reveals the crucial role of proteins in converting solar energy for biological processes, such as photosynthesis and DNA repair in plants and fruit flies, respectively. By studying the deformation of proteins and the precise movement of electrons within, scientists aim to harness these insights for technological advancements. Credit: SciTechDaily.com

Cells need energy to function. Researchers at the University of Gothenburg can now explain how energy is guided in the cell by small atomic movements to reach its destination in the protein. Imitating these structural changes of the proteins could lead to more efficient solar cells in the future.

The sun’s rays are the basis for all the energy that creates life on Earth. Photosynthesis in plants is a prime example, where solar energy is needed for the plant to grow. Special proteins absorb the sun’s rays, and the energy is transported as electrons inside the protein, in a process called charge transfer. In a new study, researchers show how proteins deform to create efficient transport routes for the charges.

Discovery in Protein Structure

“We studied a protein, photolyase, in the fruit fly, whose function is to repair damaged

Charge Transfer in Cells Illustration

The charge moves along a pathway in the protein that guides it to the right place in the protein. Credit: Sebastian Westenhoff

The researchers noted how the changes in the structure followed precise timings in line with the transfer of the charge – important knowledge that could be used to design better solar panels, batteries or other applications that require energy transport.

Insights for Future Technology

“Evolution is nature’s material development and it is always the best. What we have done is basic research. The more we understand about what happens when proteins absorb sunlight, the better we can imitate this conversion of solar energy into electricity,” says Sebastian Westenhoff.

Sebastian Westenhoff

Sebastian Westenhoff, professor of Biophysical Chemistry. Credit: Sebastian Westenhoff

The study, published in Nature Chemistry, is a clear step forward in the research on charge transfer in proteins. Studying the process in the fruit fly, using the Serial Femtosecond Crystallography (SFX) technique, can give researchers an insight into the dynamic interaction of the protein as the electrons move.

“This is going to open up new chapters in our understanding of life’s mysteries at the molecular level,” concludes Sebastian Westenhoff.

Reference: “Directed ultrafast conformational changes accompany electron transfer in a photolyase as resolved by serial crystallography” by Andrea Cellini, Madan Kumar Shankar, Amke Nimmrich, Leigh Anna Hunt, Leonardo Monrroy, Jennifer Mutisya, Antonia Furrer, Emma V. Beale, Melissa Carrillo, Tek Narsingh Malla, Piotr Maj, Lidija Vrhovac, Florian Dworkowski, Claudio Cirelli, Philip J. M. Johnson, Dmitry Ozerov, Emina A. Stojković, Leif Hammarström, Camila Bacellar, Jörg Standfuss, Michał Maj, Marius Schmidt, Tobias Weinert, Janne A. Ihalainen, Weixiao Yuan Wahlgren and Sebastian Westenhoff, 15 January 2024, Nature Chemistry.
DOI: 10.1038/s41557-023-01413-9

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