Abstract
The effect of reversible extraction of Mn on ESR signal II arising from the oxidized secondary electron donor (Z+) and the ESR doublet signal related to reduced spin-coupled pheophytin (pheo -) and "primary" electron acceptor (PA- -Fe (2+)) has been studied in oxygen evolving preparations of the photosystem 2. It is demonstrated that Mn extraction does not affect both dark and photoinduced ESR signal II and ESR doublet. A conclusion is made that Mn is not a component of the secondary electron donor Z of the Photosystem 2 and its complete removal has no effect on the exchange interaction of Pheo(-) and the PQ(-) -Fe(2+) complex.
| Translated title of the contribution | [ESR signals of photosystem II after complete removal of manganese from pea subchloroplast particles]. |
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| Original language | Russian |
| Pages (from-to) | 600-603 |
| Number of pages | 4 |
| Journal | Biofizika |
| Volume | 33 |
| Issue number | 4 |
| Publication status | Published - Jul 1988 |