𝔖 Bobbio Scriptorium
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Förster energy transfer in chlorosomes of green photosynthetic bacteria

✍ Scribed by Timothy P. Causgrove; Daniel C. Brune; Robert E. Blankenship

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
584 KB
Volume
15
Category
Article
ISSN
1011-1344

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✦ Synopsis

Energy transfer properties of whole cells and chlorosome antenna complexes isolated from the green sulfur bacteria Chlorobium limicola (containing bacteriochlorophyll c), Chlorobium vibrioforme (containing bacteriochlorophyll d) and Pelodictyon phaeoclathratiforme (containing bacteriochlorophyll e) were measured. The spectral overlap of the major chlorosome pigment (bacteriochlorophyll c, d or, e) with the bacteriochlorophyll a B795 chlorosome baseplate pigment is greatest for bacteriochlorophyll c and smallest for bacteriochlorophyll e. The absorbance and fluorescence spectra of isolated chlorosomes were measured, fitted to gaussian curves and the overlap factors with B795 calculated. Energy transfer times from the bacteriochlorophyll c, d or e to B795 were measured in whole cells and the results interpreted in terms of the Förster theory of energy transfer.

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