Spectral diffusion of the lowest exciton component in the core complex from Rhodopseudomonas palustris studied by single-molecule spectroscopy

Richter, M.F., Baier, J., Southall, J., Cogdell, R.J. , Oellerich, S. and Kohler, J. (2008) Spectral diffusion of the lowest exciton component in the core complex from Rhodopseudomonas palustris studied by single-molecule spectroscopy. Photosynthesis Research, 95(2-3), pp. 285-290. (doi:10.1007/s11120-007-9267-9)

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Publisher's URL: http://dx.doi.org/10.1007/s11120-007-9267-9

Abstract

We have recorded fluorescence-excitation spectra from individual RC-LH1 complexes from Rhodopseudomonas palustris. The spectra feature a few broad bands accompanied by a sharp line at the low-energy side of the spectrum which is ascribed to the lowest exciton state of the BChl a assembly. Recording several fluorescence-excitation spectra from the same individual complex in rapid succession reveals that the linewidth of the lowest exciton transition is determined by spectral diffusion which increases for higher excitation energies.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Cogdell, Professor Richard
Authors: Richter, M.F., Baier, J., Southall, J., Cogdell, R.J., Oellerich, S., and Kohler, J.
Subjects:Q Science > QH Natural history > QH345 Biochemistry
College/School:College of Medical Veterinary and Life Sciences > Institute of Molecular Cell and Systems Biology
Journal Name:Photosynthesis Research
ISSN:0166-8595
Published Online:17 October 2007

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
303032The structure and function of purple bacterial antenna complexesRichard CogdellBiotechnology and Biological Sciences Research Council (BBSRC)BB/D000610/1Institute of Molecular Cell and Systems Biology