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 journalArticlepeer-review

    4 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 contributionEstimation of the number of manganese atoms functioning in the donating side of photosystem 2
    Original languageRussian
    Pages (from-to)5-8
    Number of pages4
    JournalBiofizika
    Volume28
    Issue number1
    Publication statusPublished - Jan 1 1983

    ASJC Scopus subject areas

    • Medicine(all)

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