Determination of the spectral diffusion kernel of a protein by single-molecule spectroscopy

Baier, J., Richter, M.F., Cogdell, R.J. , Oellerich, S. and Köhler, J. (2008) Determination of the spectral diffusion kernel of a protein by single-molecule spectroscopy. Physical Review Letters, 100(1), 018108. (doi:10.1103/PhysRevLett.100.018108)

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Publisher's URL: http://dx.doi.org/10.1103/PhysRevLett.100.018108

Abstract

The spectral dynamics of individual bacterial light-harvesting-2 pigment-protein complexes have been studied at 1.4 K. The data provided the spectral diffusion kernel of the optical transitions of the embedded B800 bacteriochlorophyll a pigments. This kernel can be described by either a single Gaussian function or a superposition of Gaussian functions. Moreover, we found that the chromophores interact with two classes of TLSs that can be distinguished by their distance from the chromophore and are most likely located outside (class 1) and inside (class 2) the protein matrix.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Cogdell, Professor Richard
Authors: Baier, J., Richter, M.F., Cogdell, R.J., Oellerich, S., and Köhler, J.
Subjects:Q Science > QC Physics
College/School:College of Medical Veterinary and Life Sciences > Institute of Molecular Cell and Systems Biology
Journal Name:Physical Review Letters
Publisher:American Physical Society
ISSN:0031-9007
ISSN (Online):1079-7114

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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