The movie shows how chlorophylls (green and blue structures) within a protein (alpha-helices of the protein shown with gold cylinders) of purple bacteria share energy. In response to sunlight an electron (shown as a white ball) from a chlorophyll becomes energized and is shared with other cholorphylls in the same location. Understanding how nature efficiently harvests sunlight can inform efforts to develop solar energy options.
For more detail, see this site:
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Related paper:
Johan Strümpfer and Klaus Schulten. Light harvesting complex II B850 excitation dynamics. Journal of Chemical Physics, 131:225101, 2009.
Link to paper:
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