Evidence for complexed plastocyanin as the immediate electron donor of P-700.

@article{Haehnel1980EvidenceFC,
  title={Evidence for complexed plastocyanin as the immediate electron donor of P-700.},
  author={Wolfgang Haehnel and A Pr{\"o}pper and Hannah Krause},
  journal={Biochimica et biophysica acta},
  year={1980},
  volume={593 2},
  pages={384-99}
}
The reduction of P-700 by its electron donors shows two fast phases with half-times of 20 and 200 mus in isolated spinach chloroplasts. We have studied this electron transfer and the oxidation kinetics of cytochrome f. Incubation of chloroplasts with KCN or HgCl2 decreased the amplitude of the 20 mus phase. This provides evidence for a function of plastocyanin as the immediate electron donor of P-700. At low concentrations of salt and sugar the fast phases of P-700+ reduction were largely… CONTINUE READING

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