Keyword search (3,448 papers available)


Bound detergent molecules in bacterial reaction centers facilitate detection of tetryl explosive.

Author(s): Modafferi D, Zazubovich V, Kálmán L

Photosynth Res. 2020 Jul 06;: Authors: Modafferi D, Zazubovich V, Kálmán L

Article GUID: 32632533
Evidence of Simultaneous Spectral Hole Burning Involving Two Tiers of the Protein Energy Landscape in Cytochrome b6f.

Author(s): Shafiei G, Levenberg A, Lujan MA, Picorel R, Zazubovich V

J Phys Chem B. 2019 Dec 12;: Authors: Shafiei G, Levenberg A, Lujan MA, Picorel R, Zazubovich V

Article GUID: 31763829
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
Parameters of the protein energy landscapes of several light-harvesting complexes probed via spectral hole growth kinetics measurements.

Author(s): Herascu N, Najafi M, Amunts A, Pieper J, Irrgang KD, Picorel R, Seibert M, Zazubovich V

J Phys Chem B. 2011 Mar 31;115(12):2737-47 Authors: Herascu N, Najafi M, Amunts A, Pieper J, Irrgang KD, Picorel R, Seibert M, Zazubovich V

Article GUID: 21391534
Self-assembly and sensor response of photosynthetic reaction centers on screen-printed electrodes.

Author(s): Bhalla V, Zazubovich V

Anal Chim Acta. 2011 Nov 30;707(1-2):184-90 Authors: Bhalla V, Zazubovich V

Article GUID: 22027137
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
Fluorescence line narrowing and Δ-FLN spectra in the presence of excitation energy transfer between weakly coupled chromophores.

Author(s): Zazubovich V

J Phys Chem B. 2014 Nov 26;118(47):13535-43 Authors: Zazubovich V

Article GUID: 25369116
Conformational Changes in Pigment-Protein Complexes at Low Temperatures-Spectral Memory and a Possibility of Cooperative Effects.

Author(s): Najafi M, Herascu N, Shafiei G, Picorel R, Zazubovich V

J Phys Chem B. 2015 Jun 11;119(23):6930-40 Authors: Najafi M, Herascu N, Shafiei G, Picorel R, Zazubovich V

Article GUID: 25985255
Monte Carlo Modeling of Spectral Diffusion Employing Multiwell Protein Energy Landscapes: Application to Pigment-Protein Complexes Involved in Photosynthesis.

Author(s): Najafi M, Zazubovich V

J Phys Chem B. 2015 Jun 25;119(25):7911-21 Authors: Najafi M, Zazubovich V

Article GUID: 26020801
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
A simple and efficient method to prepare pure dimers and monomers of the cytochrome b 6 f complex from spinach.

Author(s): Luján MA, Lorente P, Zazubovich V, Picorel R

Photosynth Res. 2017 Jun;132(3):305-309 Authors: Luján MA, Lorente P, Zazubovich V, Picorel R

Article GUID: 28374305
Probing Energy Landscapes of Cytochrome b6f with Spectral Hole Burning: Effects of Deuterated Solvent and Detergent.

Author(s): Levenberg A, Shafiei G, Lujan MA, Giannacopoulos S, Picorel R, Zazubovich V

J Phys Chem B. 2017 10 26;121(42):9848-9858 Authors: Levenberg A, Shafiei G, Lujan MA, Giannacopoulos S, Picorel R, Zazubovich V

Article GUID: 28956922
Spectral Hole Burning in Cyanobacterial Photosystem I with P700 in Oxidized and Neutral States.

Author(s): Herascu N, Hunter MS, Shafiei G, Najafi M, Johnson TW, Fromme P, Zazubovich V

J Phys Chem B. 2016;120(40):10483-10495 Authors: Herascu N, Hunter MS, Shafiei G, Najafi M, Johnson TW, Fromme P, Zazubovich V

Article GUID: 27661089
Title:On the Controversial Nature of the 825 nm Exciton Band in the FMO Protein Complex.
Authors:Kell A,  Acharya K,  Zazubovich V,  Jankowiak R
Link:https://www.ncbi.nlm.nih.gov/pubmed/26269993?dopt=Abstract
Category:J Phys Chem Lett
PMID:26269993
Dept Affiliation: PHYSICS
1 §Department of Physics, Concordia University, Montreal H4B 1R6, Quebec, Canada.

Description:

On the Controversial Nature of the 825 nm Exciton Band in the FMO Protein Complex.

J Phys Chem Lett. 2014 Apr 17;5(8):1450-6

Authors: Kell A, Acharya K, Zazubovich V, Jankowiak R

Abstract

The nature of the low-energy 825 nm band of the Fenna-Matthews-Olson (FMO) protein complex from Chlorobaculum tepidum at 5 K is discussed. It is shown, using hole-burning (HB) spectroscopy and excitonic calculations, that the 825 nm absorption band of the FMO trimer cannot be explained by a single electronic transition or overlap of electronic transitions of noninteracting pigments. To explain the shape of emission and nonresonant HB spectra, downward uncorrelated excitation energy transfer (EET) between trimer subunits should be taken into account. Modeling studies reveal the presence of three sub-bands within the 825 nm band, in agreement with nonresonant HB and emission spectra. We argue that after light induced coherences vanish, uncorrelated EET between the lowest exciton levels of each monomer takes place. HB induced spectral shifts provide a new insight on the energy landscape of the FMO protein.

PMID: 26269993 [PubMed]