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

TY - JOUR

T1 - Conformational regulation of charge recombination reactions in a photosynthetic bacterial reaction center

AU - Katona, Gergely

AU - Snijder, Arjan

AU - Gourdon, Pontus Emanuel

AU - Andréasson, Ulf

AU - Hansson, Orjan

AU - Andréasson, Lars-Erik

AU - Neutze, Richard

PY - 2005/7

Y1 - 2005/7

N2 - 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.

AB - 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.

KW - Crystallography

KW - Electron Transport

KW - Light

KW - Models, Molecular

KW - Photochemistry

KW - Photosynthetic Reaction Center Complex Proteins

KW - Protein Conformation

KW - Rhodobacter sphaeroides

KW - X-Ray Diffraction

U2 - 10.1038/nsmb948

DO - 10.1038/nsmb948

M3 - Journal article

C2 - 15937492

SN - 1545-9993

VL - 12

SP - 630

EP - 631

JO - Nature Structural and Molecular Biology

JF - Nature Structural and Molecular Biology

IS - 7

ER -