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Electron Paramagnetic Resonance investigation of the interaction of nitroxyl spin labels with photosynthetic membranes

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Abstract

The interactions of four nytroxyl spin labels with photosynthetic membranes (thylakoids and liposomes) have been investigated by the Electron Paramagnetic Resonance technique (EPR). The obtained data (shapes of EPR spectra and kinetics of light induced reactions) allow us to localize the interactions between the markers and photosynthetic membranes. The pH influence on the reaction kinetics has also been investigated. On the basis of these experimental data, a theoretical model of the interaction between spin labels and the photosynthetic electron transport chain is proposed.

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Authors and Affiliations

  1. Faculty of Physics, University of Bucharest, P.O. Box MG-11, R-76900, Bucharest, Romania

    Alexandrina D. Stirbet & Octavian G. Duliu

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  1. Alexandrina D. Stirbet
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  2. Octavian G. Duliu
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Stirbet, A.D., Duliu, O.G. Electron Paramagnetic Resonance investigation of the interaction of nitroxyl spin labels with photosynthetic membranes. J Biol Phys 22, 175–185 (1996). https://doi.org/10.1007/BF00417649

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  • DOI: https://doi.org/10.1007/BF00417649

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