Architecture and mechanism of the light-harvesting apparatus of purple bacteria
AUTOR(ES)
Hu, Xiche
FONTE
The National Academy of Sciences
RESUMO
Photosynthetic organisms fuel their metabolism with light energy and have developed for this purpose an efficient apparatus for harvesting sunlight. The atomic structure of the apparatus, as it evolved in purple bacteria, has been constructed through a combination of x-ray crystallography, electron microscopy, and modeling. The detailed structure and overall architecture reveals a hierarchical aggregate of pigments that utilizes, as shown through femtosecond spectroscopy and quantum physics, elegant and efficient mechanisms for primary light absorption and transfer of electronic excitation toward the photosynthetic reaction center.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=34498Documentos Relacionados
- Energy transfer in spectrally inhomogeneous light-harvesting pigment-protein complexes of purple bacteria.
- Femtosecond dynamics of the forbidden carotenoid S1 state in light-harvesting complexes of purple bacteria observed after two-photon excitation
- Proteomics of Chlamydomonas reinhardtii Light-Harvesting Proteins
- Environmental effects on the light-harvesting complex of cyanobacteria.
- Light-harvesting chlorophyll a/b-binding protein inserted into isolated thylakoids binds pigments and is assembled into trimeric light-harvesting complex.
