Förster energy transfer in chlorosomes of green photosynthetic bacteria.
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.
Causgrove
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Department of Chemistry and Biochemistry, Arizona State University, Tempe 85287-1604.
Brune
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DC
Blankenship
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D001419:Bacteria / Q000378:metabolism; D018407:Bacterial Physiological Phenomena; D001426:Bacterial Proteins / Q000737:chemistry; D001429:Bacteriochlorophylls / Q000032:analysis / Q000737:chemistry* / Q000378:metabolism; D004735:Energy Transfer; D045342:Light-Harvesting Protein Complexes; D016011:Normal Distribution; D010777:Photochemistry; D010788:Photosynthesis / Q000502:physiology*; D045322:Photosynthetic Reaction Center Complex Proteins / Q000737:chemistry / Q000378:metabolism*; D013050:Spectrometry, Fluorescence; D013054:Spectrophotometry, Atomic
D001426:Bacterial Proteins; D001429:Bacteriochlorophylls; D045342:Light-Harvesting Protein Complexes; D045322:Photosynthetic Reaction Center Complex Proteins