The rapid component of electron paramagnetic resonance signal II: a candidate for the physiological donor to photosystem II in spinach chloroplasts.

@article{Babcock1975TheRC,
  title={The rapid component of electron paramagnetic resonance signal II: a candidate for the physiological donor to photosystem II in spinach chloroplasts.},
  author={Gerald T. Babcock and Kenneth Sauer},
  journal={Biochimica et biophysica acta},
  year={1975},
  volume={376 2},
  pages={329-44}
}
Rapid light-induced transients in EPR Signal IIf (F-+) are observed in 3-(3,4-dichlorophenyl)-1,1-dimethylurea (DCMU)-treated, Tris-washed chloroplasts until the state F P680 Q minus is reached. In the absence of exogenous redox mediators several flashes are required to saturate this photoinactive state. However, the Signal IIf transient is observed on only the first flash following DCMU addition if an efficient donor to Signal IIf, phenylenediamine or hydroquinone, is present. Complementary… CONTINUE READING