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Contact: Andy Freeberg
DOE/SLAC National Accelerator Laboratory

Photosystem II Crystals

Caption: These tiny green crystals, measuring just millionths of a meter, preserve the molecular structure and activity of Photosystem II, which carries out the oxygen-releasing process in photosynthesis. The chlorophyll-containing crystals, which have a boxlike structure, were studied at room temperature using ultrashort X-ray pulses at SLAC's Linac Coherent Light Source X-ray laser. The image was taken with a light microscope.

Credit: Credit: J. Kern, Berkeley Lab

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Related news release: X-ray laser sees photosynthesis in action

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