Structure, Function, and Regulation of Antenna Complexes of Green Photosynthetic Bacteria
This project is concerned with the structure and function of the chlorosome antennas found in green photosynthetic bacteria. Chlorosomes are ellipsoidal structures attached to the cytoplasmic side of the inner cell membrane. These antenna complexes provide a very large absorption cross section for light capture. Evidence is overwhelming that the chlorosome represents a very different type of antenna from that found in any other photosynthetic system yet studied. It is now clear that chlorosomes do not contain traditional pigment-proteins, in which the pigments bind to specific sites on proteins. Instead, the chlorosome pigments are organized in vivo into pigment oligomers in which direct pigment-pigment interactions are of dominant importance. Our group has used a multidisciplinary approach to investigate this unique system, including model systems, ultrafast spectroscopy, molecular biology, protein chemistry and X-ray crystallography.
- Research Organization:
- Arizona State University, Tempe, AZ (US)
- Sponsoring Organization:
- (US)
- DOE Contract Number:
- FG03-97ER20267
- OSTI ID:
- 781894
- Resource Relation:
- Other Information: PBD: 27 Apr 2001
- Country of Publication:
- United States
- Language:
- English
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