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The effects of light-induced reduction of the photosystem II reaction center

    1.
    SYSNO ASEP0341236
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleThe effects of light-induced reduction of the photosystem II reaction center
    Author(s) Kutý, Michal (UEK-B)
    Number of authors4
    Source TitleJournal of Molecular Modeling. - : Springer - ISSN 1610-2940
    Roč. 8, č. 15 (2009), s. 923-933
    Number of pages11 s.
    Languageeng - English
    CountryUS - United States
    KeywordsPhotosystem II ; Reaction center ; Pheophytin
    Subject RIVCE - Biochemistry
    R&D ProjectsLC06010 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
    CEZAV0Z60870520 - UEK-B (2005-2011)
    UT WOS000267154200004
    AnnotationAccumulation of reduced pheophytin a (Pheo-D1) in photosystem II reaction center (PSII RC) under illumination at low redox potential is accompanied by changes in absorbance and circular dichroism spectra. The temperature dependences of these spectral changes have the potential to distinguish between changes caused by the excitonic interaction and temperature-dependent processes. We observed a conformational change in the PSII RC protein part and changes in the spatial positions of the PSII RC pigments of the active D1 branch upon reduction of Pheo-D1 only in the case of high temperature (298 K) dynamics. The resulting absorption difference spectra of PSII RC models equilibrated at temperatures of 77K and 298K were highly consistent with our previous experiments in which light-induced bleaching of the PSII RC absorbance spectrum was observable only at 298K.
    WorkplaceGlobal Change Research Institute
    ContactNikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268
    Year of Publishing2010
Number of the records: 1  

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