Abstract
The authors have studied the effect of reversible extraction of Mn on the e.s.r. signal II belonging to the secondary electron donor (Z+) and the doublet e.s.r. signal of reduced pheophytin (pheoτ) and the plastquinone complex with iron (PCτ-Fe2+) in the oxygen evolving preparations of photosystem II (p.s. II). It is shown that after complete removal of Mn from the p.s. II preparations both the dark and photo-induced e.s.r. signal II and the doublet e.s.r. signal persist. It is concluded that Mn is not a component of the secondary electron donor Z of photosystem II and that its complete extraction does not disturb the exchange interaction between the anion radical pheoτ and the reduced complex PCτ-Fe2+.
| Original language | English |
|---|---|
| Pages (from-to) | 643-646 |
| Number of pages | 4 |
| Journal | Biophysics |
| Volume | 33 |
| Issue number | 4 |
| Publication status | Published - Dec 1 1988 |
ASJC Scopus subject areas
- Biophysics
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Allakhverdiyev, S. I., Klimov, V. V., & Proskuryakov, I. I. (1988). E.s.r. signals of photosystem II after complete removal of manganese from the subchloroplast particles. Biophysics, 33(4), 643-646.