Electron transfer from plastocyanin to the photosystem I reaction center in mutants with increased potential of the primary donor in Chlamydomonas reinhardtii.

@article{Ramesh2002ElectronTF,
  title={Electron transfer from plastocyanin to the photosystem I reaction center in mutants with increased potential of the primary donor in Chlamydomonas reinhardtii.},
  author={Velupillai M Ramesh and Mariana Guergova-Kuras and Pierre A Joliot and Andrew N. Webber},
  journal={Biochemistry},
  year={2002},
  volume={41 50},
  pages={14652-8}
}
The dependence of the P(700)(+)/P(700) midpoint potential on kinetics of reduction of P(700)(+) in vivo has been examined in a series of site-directed mutants of Chlamydomonas reinhardtii in which the histidyl axial ligand to the Mg(2+) of the P(700) chlorophyll a has been changed to several different amino acids. In wild-type photosystem I, the potential of P(700)(+)/P(700) is 447 mV and the in vivo half-time of P(700)(+) reduction by its natural donor, plastocyanin, is 4 micros. Substitution… CONTINUE READING