Article
Recruitment of a foreign quinone into the A1 site of photosystem I. Consecutive forward electron transfer from A0 TO A1 to FX with anthraquinone in the A1 site as studied by transient EPR.
The Journal of biological chemistry - 1 Apr 2005
Pushkar Yulia N, Karyagina Irina, Stehlik Dietmar, Brown Sarah, van der Est Art
Abstract excerpt
In photosystem I (PS I), phylloquinone (PhQ) acts as a low potential electron acceptor during light-induced electron transfer (ET). The origin of the very low midpoint potential of the quinone is investigated by introducing anthraquinone (AQ) into PS I in the presence and absence of the iron-sulfur clusters. Solvent extraction and reincubation is used to obtain PS I particles containing AQ and the iron-sulfur...
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