Evidence for a trimeric organization of the photosystem I complex from the thermophilic cyanobacterium Synechococcus sp.
- Boekema, E.J.,
- Dekker, J.P.,
- Heel, M.G. van,
- Rögner, M.,
- Saenger, W.,
- Witt, I.,
- Witt, H.T.,
Publication date
January 1987
DOI ISSN
0014-5793 Citation count (estimate)
128Abstract
A photosystem I (PS I) reaction center complex was isolated and purified from the cyanobacterium Synechococcus sp. The complex has a molecular mass of about 600 kDa and contains 120 Chl a molecules per photoactive Chl a1 (P-700). Electron micrographs show that the PS I complex has the shape of a disk with a diameter of about 19 nm and a thickness of 6 nm. Computer analysis reveals that the complex is composed of three similar units.
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