Stemler A. A dynamic interaction between the bicarbonate ligand and photosystem II reaction center complexes in chloroplasts.
BIOCHIMICA ET BIOPHYSICA ACTA 1979;
545:36-45. [PMID:
758939 DOI:
10.1016/0005-2728(79)90111-7]
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Abstract
The binding of HCO-3 to Photosystem II reaction center complexes in broken chloroplasts requires the presence of the oxidized form of the negative charge accumulator 'B'. HCO-3 which is already bound to the reaction center II complex can escape if chloroplasts are illuminated with saturating light in the presence of a Hill oxidant and high concentrations of sodium chloride and sodium formate. These observations are explained in terms of a cyclic dark binding of HCO-3 to the reaction center II complex and a subsequent release in the light.
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