A carbonic anhydrase inhibitor induces bicarbonate-reversible suppression of electron transfer in pea photosystem 2 membrane fragments

A. V. Shitov, S. K. Zharmukhamedov, T. V. Shutova, S. I. Allakhverdiev, G. Samuelsson, V. V. Klimov

    Research output: Contribution to journalArticlepeer-review

    15 Citations (Scopus)

    Abstract

    The effects of suppression of the carbonic anhydrase (CA) activity by a CA-inhibitor, acetazolamide (AA), on the photosynthetic activities of photosystem II (PS II) particles from higher plants were investigated. AA along with CA-activity inhibits the PS II photosynthetic electron transfer and the AA-induced suppression is totally reversed by the addition of bicarbonate (3-5 mM). Similar effect of recovery in the PS II photosynthetic activity was also revealed upon the addition of known artificial electron donors (potassium ferrocyanide and TMPD). Significance and possible functions of CA for the PS II donor side are discussed.

    Original languageEnglish
    Pages (from-to)366-371
    Number of pages6
    JournalJournal of Photochemistry and Photobiology B: Biology
    Volume104
    Issue number1-2
    DOIs
    Publication statusPublished - Jul 2011

    Keywords

    • Acetazolamide
    • Bicarbonate
    • Carbonic anhydrase
    • Chlorophyll a fluorescence yield
    • Inhibitors of carbonic anhydrase
    • Photosystem 2

    ASJC Scopus subject areas

    • Radiation
    • Radiological and Ultrasound Technology
    • Biophysics
    • Radiology Nuclear Medicine and imaging

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