| Autor: |
Voznyak VM, Ganago IB, Moskalenko AA, Elfimov EI |
| Jazyk: |
angličtina |
| Zdroj: |
Biochimica et biophysica acta [Biochim Biophys Acta] 1980 Sep 05; Vol. 592 (2), pp. 364-8. |
| DOI: |
10.1016/0005-2728(80)90196-6 |
| Abstrakt: |
Fluorescence yield dependence on external magnetic field (0-600 G) was measured for chlorophyll-protein complexes enriched with Photosystem I. Maximal relative changes of fluorescence yield at room temperature (1.0-2.5%) were dependent on the chlorphyll a:P-700 ratio. Magnetic field-induced changes were observed only in the presence of dithionite. At low temperatures (down to -160 degrees C) the magnetic field-induced effect decreased. The effect is obviously connected with the functions of reaction centers in Photosystem I. An explanation of the effect is proposed based on the hypothesis of radical pairs recombination within the reaction center. For the radical pair (P-700+. A-.), an intermediate acceptor, A-., with a g-value approximately equal to that of P-700+. is proposed. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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