Conformational regulation of charge recombination reactions in a photosynthetic bacterial reaction center

Research output: Contribution to journalJournal articleResearchpeer-review

Gergely Katona, Arjan Snijder, Pontus Emanuel Gourdon, Ulf Andréasson, Orjan Hansson, Lars-Erik Andréasson, Richard Neutze

In bright light the photosynthetic reaction center (RC) of Rhodobacter sphaeroides stabilizes the P(+)(870).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.

Original languageEnglish
JournalNature Structural and Molecular Biology
Volume12
Issue number7
Pages (from-to)630-1
Number of pages2
ISSN1545-9993
DOIs
Publication statusPublished - Jul 2005

    Research areas

  • Crystallography, Electron Transport, Light, Models, Molecular, Photochemistry, Photosynthetic Reaction Center Complex Proteins, Protein Conformation, Rhodobacter sphaeroides, X-Ray Diffraction

ID: 126103793