Article
Recruitment of a foreign quinone into the A1 site of photosystem I. Altered kinetics of electron transfer in phylloquinone biosynthetic pathway mutants studied by time-resolved optical, EPR, and electrometric techniques.
The Journal of biological chemistry - 4 Aug 2000
Semenov A Y, Vassiliev I R, van Der Est A, Mamedov M D, Zybailov B, Shen G, Stehlik D, Diner B A, Chitnis P R, Golbeck J H
Abstract excerpt
Interruption of the menA or menB gene in Synechocystis sp. PCC 6803 results in the incorporation of a foreign quinone, termed Q, into the A(1) site of photosystem I with a number of experimental indicators identifying Q as plastoquinone-9. A global multiexponential analysis of time-resolved optical spectra in the blue region shows the following three kinetic components: 1) a 3-ms lifetime in the absence of methyl...
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