In bright light the photosynthetic reaction center (RC) of Rhodobacter sphaeroides stabilizes the P870+ · Q A- charge-separated state and thereby minimizes the potentially harmful effects of light saturation. Using X-ray diffraction we report a Conformational change that occurs within the cytoplasmic domain of this RC in response to prolonged illumination with bright light. Our observations suggest a novel structural mechanism for the regulation of electron transfer reactions in photosynthesis.
CITATION STYLE
Katona, G., Snijder, A., Gourdon, P., Andréasson, U., Hansson, Ö., Andréasson, L. E., & Neutze, R. (2005). Conformational regulation of charge recombination reactions in a photosynthetic bacterial reaction center. Nature Structural and Molecular Biology, 12(7), 630–631. https://doi.org/10.1038/nsmb948
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