E.s.r. signals of photosystem II after complete removal of manganese from the subchloroplast particles

S. I. Allakhverdiyev; V. V. Klimov; I. I. Proskuryakov

E.s.r. signals of photosystem II after complete removal of manganese from the subchloroplast particles

S. I. Allakhverdiyev, V. V. Klimov, I. I. Proskuryakov

Research Institute for Interdisciplinary Science

Research output: Contribution to journal › Article › peer-review

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 (pheo^τ) and the plastquinone complex with iron (PC^τ-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 pheo^τ and the reduced complex PC^τ-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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title = "E.s.r. signals of photosystem II after complete removal of manganese from the subchloroplast particles",

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+.",

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T1 - E.s.r. signals of photosystem II after complete removal of manganese from the subchloroplast particles

AU - Allakhverdiyev, S. I.

AU - Klimov, V. V.

AU - Proskuryakov, I. I.

PY - 1988/12/1

Y1 - 1988/12/1

N2 - 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+.

AB - 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+.

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E.s.r. signals of photosystem II after complete removal of manganese from the subchloroplast particles

Abstract

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