Protonophores induce plastoquinol oxidation and quench chloroplast fluorescence: evidence for a cyclic, proton-conducting pathway in oxygenic photosynthesis

The photosynthetic apparatus converts light into chemical energy by a series of reactions that give rise to a coupled flow of electrons and protons that generate reducing power and ATP, respectively. A key intermediate in these reactions is plastoquinone (PQ), the most abundant electron and proton (...

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