Reconstitution of the water-oxidizing complex in manganese-depleted photosystem II preparations using synthetic binuclear Mn(II) and Mn(IV) complexes: Production of hydrogen peroxide

Toshi Nagata, Takayuki Nagasawa, Sergei K. Zharmukhamedov, Vyacheslav V. Klimov, Suleyman I. Allakhverdiev

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)

    Abstract

    Reconstitution of Mn-depleted PSII particles with synthetic binuclear Mn complexes (one Mn(II)2 complex and one Mn(IV)2 complex) was examined. In both cases the electron-transfer rates in the reconstituted systems were found to be up to 75-82% of that measured in native PSII but the oxygen evolution activity remained lower (<5-40%). However, hydrogen peroxide was also produced by the reconstituted samples. These samples therefore represent a new type of reconstituted PSII that generates hydrogen peroxide as the final product in reconstituted PSII centers.

    Original languageEnglish
    Pages (from-to)133-138
    Number of pages6
    JournalPhotosynthesis research
    Volume93
    Issue number1-3
    DOIs
    Publication statusPublished - Jul 2007

    Keywords

    • Hydrogen peroxide
    • Manganese complex
    • Photosystem II
    • Reconstitution
    • Water-oxidizing complex

    ASJC Scopus subject areas

    • Biochemistry
    • Plant Science
    • Cell Biology

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