Abstract
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°.
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