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How Well Does the Hole-Burning Action Spectrum Represent the Site-Distribution Function of the Lowest-Energy State in Photosynthetic Pigment-Protein Complexes?

Author(s): Zazubovich V, Jankowiak R

J Phys Chem B. 2019 Jul 02;: Authors: Zazubovich V, Jankowiak R

Article GUID: 31265294
Low-temperature protein dynamics of the B800 molecules in the LH2 light-harvesting complex: spectral hole burning study and comparison with single photosynthetic complex spectroscopy.

Author(s): Grozdanov D, Herascu N, Reinot T, Jankowiak R, Zazubovich V

J Phys Chem B. 2010 Mar 18;114(10):3426-38 Authors: Grozdanov D, Herascu N, Reinot T, Jankowiak R, Zazubovich V

Article GUID: 20166717
Effects of the distributions of energy or charge transfer rates on spectral hole burning in pigment-protein complexes at low temperatures.

Author(s): Herascu N, Ahmouda S, Picorel R, Seibert M, Jankowiak R, Zazubovich V

J Phys Chem B. 2011 Dec 22;115(50):15098-109 Authors: Herascu N, Ahmouda S, Picorel R, Seibert M, Jankowiak R, Zazubovich V

Article GUID: 22046956
Spectral hole burning, recovery, and thermocycling in chlorophyll-protein complexes: distributions of barriers on the protein energy landscape.

Author(s): Najafi M, Herascu N, Seibert M, Picorel R, Jankowiak R, Zazubovich V

J Phys Chem B. 2012 Sep 27;116(38):11780-90 Authors: Najafi M, Herascu N, Seibert M, Picorel R, Jankowiak R, Zazubovich V

Article GUID: 22957798
Modeling of various optical spectra in the presence of slow excitation energy transfer in dimers and trimers with weak interpigment coupling: FMO as an example.

Author(s): Herascu N, Kell A, Acharya K, Jankowiak R, Blankenship RE, Zazubovich V

J Phys Chem B. 2014 Feb 27;118(8):2032-40 Authors: Herascu N, Kell A, Acharya K, Jankowiak R, Blankenship RE, Zazubovich V

Article GUID: 24506338
On the Controversial Nature of the 825 nm Exciton Band in the FMO Protein Complex.

Author(s): Kell A, Acharya K, Zazubovich V, Jankowiak R

J Phys Chem Lett. 2014 Apr 17;5(8):1450-6 Authors: Kell A, Acharya K, Zazubovich V, Jankowiak R

Article GUID: 26269993
On the Conflicting Estimations of Pigment Site Energies in Photosynthetic Complexes: A Case Study of the CP47 Complex.

Author(s): Reinot T, Chen J, Kell A, Jassas M, Robben KC, Zazubovich V, Jankowiak R

Anal Chem Insights. 2016;11:35-48 Authors: Reinot T, Chen J, Kell A, Jassas M, Robben KC, Zazubovich V, Jankowiak R

Article GUID: 27279733
Title:Effects of the distributions of energy or charge transfer rates on spectral hole burning in pigment-protein complexes at low temperatures.
Authors:Herascu N,  Ahmouda S,  Picorel R,  Seibert M,  Jankowiak R,  Zazubovich V
Link:https://www.ncbi.nlm.nih.gov/pubmed/22046956?dopt=Abstract
Category:J Phys Chem B
PMID:22046956
Dept Affiliation: PHYSICS
1 Department of Physics, Concordia University, Montreal, Quebec, Canada.

Description:

Effects of the distributions of energy or charge transfer rates on spectral hole burning in pigment-protein complexes at low temperatures.

J Phys Chem B. 2011 Dec 22;115(50):15098-109

Authors: Herascu N, Ahmouda S, Picorel R, Seibert M, Jankowiak R, Zazubovich V

Abstract

Effects of the distributions of excitation energy transfer (EET) rates (homogeneous line widths) on the nonphotochemical (resonant) spectral hole burning (SHB) processes in photosynthetic chlorophyll-protein complexes (reaction center [RC] and CP43 antenna of Photosystem II from spinach) are considered. It is demonstrated that inclusion of such a distribution results in somewhat more dispersive hole burning kinetics. More importantly, however, inclusion of the EET rate distributions strongly affects the dependence of the hole width on the fractional hole depth. Different types of line width distributions have been explored, including those resulting from Förster type EET between weakly interacting pigments as well as Gaussian ones, which may be a reasonable approximation for those resulting, for instance, from so-called extended Förster models. For Gaussian line width distributions, it is possible to determine the parameters of both line width and tunneling parameter distributions from SHB data without a priori knowledge of any of them. Concerning more realistic asymmetric distributions, we demonstrate, using the simple example of CP43 antenna, that one can use SHB modeling to estimate electrostatic couplings between pigments and support or exclude assignment of certain pigment(s) to a particular state.

PMID: 22046956 [PubMed - indexed for MEDLINE]