Identification of the site where the electron transfer chain of plant mitochondria is stimulated by electrostatic charge screening.

K. Krab, M.J. Wagner, A.M. Wagner, I.M. Moller

    Research output: Contribution to JournalArticleAcademicpeer-review

    Abstract

    Modular kinetic analysis was used to determine the sites in plant mitochondria where charge-screening stimulates the rate of electron transfer from external NAD(P)H to oxygen. In mitochondria isolated from potato (Solanum tuberosum L.) tuber callus, stimulation of the rate of oxygen uptake was accompanied by a decrease in the steady-state reduction level of coenzyme Q, and by a small decrease in the steady-state reduction level of cytochrome c. Modular kinetic analysis around coenzyme Q revealed that stimulation of the rate was due to stimulation of quinol oxidation via the cytochrome pathway (cytochrome bc
    Original languageEnglish
    Pages (from-to)869-876
    Number of pages8
    JournalEuropean Journal of Biochemistry
    Volume267
    DOIs
    Publication statusPublished - 2000

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