Studies on Plastoquinonez-1. Determination of the Concentration and Oxidation-reduction State of Plastoquinone in Isolated Chloroplasts
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چکیده
It was shown by Cranes that plastoquinone is localized in the chloroplasts of higher plants, and there is now a good deal of evidence which suggests that it bctions as an oxidation-reduction carrier in the photosynthetic electron transport system. Bishop’ showed that when lyophilized chloroplasts were extracted with organic solvents they lost their Hill-reaction activity, but that this could be restored by adding plastoquiuone. Furthermore, Crane et al.’ have shown that the endogenous plastoquinone is reduced to the quinol when isolated chloroplasts are illuminated. It was of interest therefore to devise a method for the determination of the concentration and oxidation-reduction state of plasto-
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تاریخ انتشار 2001