help button home button Biophys. J.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Macpherson, A. N.
Right arrow Articles by Gillbro, T.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Macpherson, A. N.
Right arrow Articles by Gillbro, T.

Biophys J, February 2001, p. 923-930, Vol. 80, No. 2

Efficient Energy Transfer from the Carotenoid S2 State in a Photosynthetic Light-Harvesting Complex

Alisdair N. Macpherson,* Juan B. Arellano,dagger Niall J. Fraser,dagger Richard J. Cogdell,dagger and Tomas Gillbro*

 *Department of Biophysical Chemistry, Umeå University, SE-90187 Umeå, Sweden; and  dagger Division of Biochemistry and Molecular Biology, IBLS, University of Glasgow, Glasgow, G12 8QQ, United Kingdom

Previously, the spatial arrangement of the carotenoid and bacteriochlorophyll molecules in the peripheral light-harvesting (LH2) complex from Rhodopseudomonas acidophila strain 10050 has been determined at high resolution. Here, we have time resolved the energy transfer steps that occur between the carotenoid's initial excited state and the lowest energy group of bacteriochlorophyll molecules in LH2. These kinetic data, together with the existing structural information, lay the foundation for understanding the detailed mechanisms of energy transfer involved in this fundamental, early reaction in photosynthesis. Remarkably, energy transfer from the rhodopin glucoside S2 state, which has an intrinsic lifetime of ~120 fs, is by far the dominant pathway, with only a minor contribution from the longer-lived S1 state.

Biophys J, February 2001, p. 923-930, Vol. 80, No. 2
© 2001 by the Biophysical Society   0006-3495/01/02/923/08  $2.00


This article has been cited by other articles:


Home page
 Biophys. JHome page
C. Theiss, D. Leupold, A. A. Moskalenko, A. P. Razjivin, H. J. Eichler, and H. Lokstein
Femtosecond Spectroscopy of Native and Carotenoidless Purple-Bacterial LH2 Clarifies Functions of Carotenoids
Biophys. J., June 15, 2008; 94(12): 4808 - 4811.
[Abstract] [Full Text] [PDF]

Home page
 Biophys. JHome page
D. Polli, G. Cerullo, G. Lanzani, S. De Silvestri, H. Hashimoto, and R. J. Cogdell
Carotenoid-Bacteriochlorophyll Energy Transfer in LH2 Complexes Studied with 10-fs Time Resolution
Biophys. J., April 1, 2006; 90(7): 2486 - 2497.
[Abstract] [Full Text] [PDF]

Home page
 Biophys. JHome page
W. Wohlleben, T. Buckup, J. L. Herek, R. J. Cogdell, and M. Motzkus
Multichannel Carotenoid Deactivation in Photosynthetic Light Harvesting as Identified by an Evolutionary Target Analysis
Biophys. J., July 1, 2003; 85(1): 442 - 450.
[Abstract] [Full Text] [PDF]

Home page
 ScienceHome page
G. Cerullo, D. Polli, G. Lanzani, S. De Silvestri, H. Hashimoto, and R. J. Cogdell
Photosynthetic Light Harvesting by Carotenoids: Detection of an Intermediate Excited State
Science, December 20, 2002; 298(5602): 2395 - 2398.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2001 by the Biophysical Society.