Excitation energy trapping in photosystem I complexes depleted in Lhca1 and Lhca4

J.A. Ihalainen, F. Klimmek, U. Ganeteg, I.H.M. van Stokkum, R. van Grondelle, S. Jansson, J.P. Dekker

Research output: Contribution to JournalArticleAcademicpeer-review

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 languageEnglish
Pages (from-to)4787-4791
JournalFEBS Letters
Volume579
Issue number21
DOIs
Publication statusPublished - 2005

Bibliographical note

Excitation energy trapping in photosystem I complexes depleted in Lhca1 and Lhca4

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