Abstract
Some data on the structure and composition of chlorosomes are in conflict with their energy and kinetic characteristics. Among the latter is the very short excitation lifetime of the dominant pigment C740 in the 3D giant chlorosome (about 1000 pigment molecules per reaction center). Therewith the excitation transfer from C740 to baseplate bacteriochlorophyll B795 and further to the main membrane B860 can hardly be efficient. This result was obtained by modeling the energy migration between these pigment fractions in maximally optimized conditions. The possible reasons and mechanisms responsible for such strong nonphotochemical quenching of electronic excitations in the pigments of giant chlorosomes are substantiated and discussed.
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Original Russian Text © A.Yu. Borisov, 2009, published in Biofizika, 2009, Vol. 54, No. 3, pp. 434–441.
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Borisov, A.Y. Can giant chlorosomes be part of the light-harvesting antennae of green bacteria?. BIOPHYSICS 54, 302–307 (2009). https://doi.org/10.1134/S0006350909030063
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DOI: https://doi.org/10.1134/S0006350909030063