Strong orientational ordering of the near‐infrared transition moment vectors of light‐harvesting antenna bacterioviridin in chromatophores of the green photosynthetic bacterium Chlorobium limicola

FEBS Letters

Abdourakhmanov, I.A.¹  Kharchenko, S.G.²  Fetisova, Z.G.² 

[1] Institute of Soil Sciences and Photosynthesis, USSR Academy of Sciences, Pushchino, Moscow Region, USSR;A.N. Belozersky Laboratory of Molecular Biology and Bioorganic Chemistry, Moscow State University, Bldg A, Moscow 119899, USSR

关键词: Linear dichroism;    Bacterioviridin orientation;    Green bacteria;    Bacterial photosynthesis;    Chromatophore;   

DOI  :  10.1016/0014-5793(86)80486-0

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

The direction of the transition moments of chlorosome pigments in chromatophores of the green photosynthetic bacterium Chlorobium limicola was studied by linear dichroism. Orientation of chromatophores was achieved by stretching a polyacrylamide gel in which they were packed. It was shown that in each individual chromatophore the Q_y transition moment vectors of the whole chlorosome bacterioviridin are parallel to each other and are practically ideally oriented along the chlorosome long axis. The exact value of the angle α between the bacterioviridin transition moments and the long axis of the chlorosome is calculated to be α = 0°, the mean square deviation being 7°.

【 授权许可】

Unknown