Opredelenie chisla atomov margantsa, funktsioniruiushchikh v donornoǐ chasti fotosistemy II.

S. I. Allakhverdiev; A. V. Klevanik; V. V. Klimov; V. A. Shuvalov; A. A. Krasnovskiǐ

Opredelenie chisla atomov margantsa, funktsioniruiushchikh v donornoǐ chasti fotosistemy II.

Translated title of the contribution: Estimation of the number of manganese atoms functioning in the donating side of photosystem 2

S. I. Allakhverdiev, A. V. Klevanik, V. V. Klimov, V. A. Shuvalov, A. A. Krasnovskiǐ

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

5 Citations (Scopus)

Abstract

Comparison of theoretically expected and experimental dependence of reactivation of the donor side of photosystem 2 (PS-2) on concentration of exogenic MnCl2 that was observed in PS-2 preparation after complete extraction of manganese was made. It is shown that in the absence of Mg2+ or bivalent cations of other metals (Me2+) the reactivation corresponds to the filling of a tetranuclear Mn-containing active center; in the presence of 3 microM Mg2+ or other Me2+ the reactivation takes place as a result of binding of two manganese atoms in the center. It is suggested that a tetranuclear manganese complex (which probably is responsible for the photosynthetic oxidation of water) functions in the donor side of PS-2; two of these four manganese atoms can be substituted by Mg2+ or other Me2+ without changing activity of the center.

Translated title of the contribution	Estimation of the number of manganese atoms functioning in the donating side of photosystem 2
Original language	Russian
Pages (from-to)	5-8
Number of pages	4
Journal	Biofizika
Volume	28
Issue number	1
Publication status	Published - Jan 1 1983

ASJC Scopus subject areas

Medicine(all)

Cite this

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title = "Opredelenie chisla atomov margantsa, funktsioniruiushchikh v donornoǐ chasti fotosistemy II.",

abstract = "Comparison of theoretically expected and experimental dependence of reactivation of the donor side of photosystem 2 (PS-2) on concentration of exogenic MnCl2 that was observed in PS-2 preparation after complete extraction of manganese was made. It is shown that in the absence of Mg2+ or bivalent cations of other metals (Me2+) the reactivation corresponds to the filling of a tetranuclear Mn-containing active center; in the presence of 3 microM Mg2+ or other Me2+ the reactivation takes place as a result of binding of two manganese atoms in the center. It is suggested that a tetranuclear manganese complex (which probably is responsible for the photosynthetic oxidation of water) functions in the donor side of PS-2; two of these four manganese atoms can be substituted by Mg2+ or other Me2+ without changing activity of the center.",

author = "Allakhverdiev, {S. I.} and Klevanik, {A. V.} and Klimov, {V. V.} and Shuvalov, {V. A.} and Krasnovskiǐ, {A. A.}",

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AU - Allakhverdiev, S. I.

AU - Klevanik, A. V.

AU - Klimov, V. V.

AU - Shuvalov, V. A.

AU - Krasnovskiǐ, A. A.

PY - 1983/1/1

Y1 - 1983/1/1

N2 - Comparison of theoretically expected and experimental dependence of reactivation of the donor side of photosystem 2 (PS-2) on concentration of exogenic MnCl2 that was observed in PS-2 preparation after complete extraction of manganese was made. It is shown that in the absence of Mg2+ or bivalent cations of other metals (Me2+) the reactivation corresponds to the filling of a tetranuclear Mn-containing active center; in the presence of 3 microM Mg2+ or other Me2+ the reactivation takes place as a result of binding of two manganese atoms in the center. It is suggested that a tetranuclear manganese complex (which probably is responsible for the photosynthetic oxidation of water) functions in the donor side of PS-2; two of these four manganese atoms can be substituted by Mg2+ or other Me2+ without changing activity of the center.

AB - Comparison of theoretically expected and experimental dependence of reactivation of the donor side of photosystem 2 (PS-2) on concentration of exogenic MnCl2 that was observed in PS-2 preparation after complete extraction of manganese was made. It is shown that in the absence of Mg2+ or bivalent cations of other metals (Me2+) the reactivation corresponds to the filling of a tetranuclear Mn-containing active center; in the presence of 3 microM Mg2+ or other Me2+ the reactivation takes place as a result of binding of two manganese atoms in the center. It is suggested that a tetranuclear manganese complex (which probably is responsible for the photosynthetic oxidation of water) functions in the donor side of PS-2; two of these four manganese atoms can be substituted by Mg2+ or other Me2+ without changing activity of the center.

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Opredelenie chisla atomov margantsa, funktsioniruiushchikh v donornoǐ chasti fotosistemy II.

Abstract

ASJC Scopus subject areas

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