Conformational regulation of charge recombination reactions in a photosynthetic bacterial reaction center
Journal article, 2005
In bright light the photosynthetic reaction center (RC) of Rhodobacter sphaeroides stabilizes the P 870 + ยท 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.
Author
G Katona
Chalmers
Arjan Snijder
Chalmers, Chemical and Biological Engineering, Molecular Biotechnology
Pontus Emanuel Gourdon
Chalmers, Chemical and Biological Engineering, Molecular Biotechnology
U Andreasson
University of Gothenburg
Örjan Hansson
University of Gothenburg
Lars-Erik Andreasson
University of Gothenburg
Richard Neutze
University of Gothenburg
Chalmers, Chemical and Biological Engineering, Molecular Biotechnology
Nature Structural and Molecular Biology
1545-9993 (ISSN) 1545-9985 (eISSN)
Vol. 12 7 630-631Subject Categories
Biochemistry and Molecular Biology
DOI
10.1038/nsmb948
PubMed
15937492