Abstract
We report a time-resolved fluorescence spectroscopy characterization of photosystem I (PSI) particles prepared from Arabidopsis lines with knock-out mutations against the peripheral antenna proteins of Lhca1 or Lhca4. The first mutant retains Lhca2 and Lhca3 while the second retains one other light-harvesting protein of photosystem I (Lhca) protein, probably Lhca5. The results indicate that Lhca2/3 and Lhca1/4 each provides about equally effective energy transfer routes to the PSI core complex, and that Lhca5 provides a less effective energy transfer route. We suggest that the specific location of each Lhca protein within the PSI-LHCI supercomplex is more important than the presence of so-called red chlorophylls in the Lhca proteins. © 2005 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
Original language | English |
---|---|
Pages (from-to) | 4787-4791 |
Journal | FEBS Letters |
Volume | 579 |
Issue number | 21 |
DOIs | |
Publication status | Published - 2005 |