Fluorescence spectroscopy of the longwave chlorophylls in trimeric and monomeric photosystem I core complexes from the cyanobacterium Spirulina platensis.

@article{Karapetyan1997FluorescenceSO,
  title={Fluorescence spectroscopy of the longwave chlorophylls in trimeric and monomeric photosystem I core complexes from the cyanobacterium Spirulina platensis.},
  author={Navassard V. Karapetyan and D Dorra and Gerd Schweitzer and I N Bezsmertnaya and Alfred R. Holzwarth},
  journal={Biochemistry},
  year={1997},
  volume={36 45},
  pages={13830-7}
}
The organization and interaction of chlorophylls (Chl) and the kinetics of the energy transfer in the core antenna of photosystem I (PSI) trimeric and monomeric complexes, isolated from Spirulina platensis with Triton X-100 have been studied by stationary and time-resolved fluorescence. At 295 K both complexes show an unusually intense long-wavelength emission band with prominent peaks at 730 nm (trimers) or 715 nm (monomers), whose intensity is independent of the redox state of P700. A broad… CONTINUE READING