PERFORM Publications

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Title		Authors	PubMed ID
1	Evidence of Simultaneous Spectral Hole Burning Involving Two Tiers of the Protein Energy Landscape in Cytochrome b6f.	Shafiei G, Levenberg A, Lujan MA, Picorel R, Zazubovich V	31763829 PHYSICS
2	How Well Does the Hole-Burning Action Spectrum Represent the Site-Distribution Function of the Lowest-Energy State in Photosynthetic Pigment-Protein Complexes?	Zazubovich V, Jankowiak R	31265294 CHEMISTRY
3	Comparison of Electronic and Physicochemical Properties between Imidazolium-Based and Pyridinium-Based Ionic Liquids.	Wu C, De Visscher A, Gates ID	29889524 ENCS
4	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.	Grozdanov D, Herascu N, Reinot T, Jankowiak R, Zazubovich V	20166717 PHYSICS
5	Parameters of the protein energy landscapes of several light-harvesting complexes probed via spectral hole growth kinetics measurements.	Herascu N, Najafi M, Amunts A, Pieper J, Irrgang KD, Picorel R, Seibert M, Zazubovich V	21391534 PHYSICS
6	Effects of the distributions of energy or charge transfer rates on spectral hole burning in pigment-protein complexes at low temperatures.	Herascu N, Ahmouda S, Picorel R, Seibert M, Jankowiak R, Zazubovich V	22046956 PHYSICS
7	Spectral hole burning, recovery, and thermocycling in chlorophyll-protein complexes: distributions of barriers on the protein energy landscape.	Najafi M, Herascu N, Seibert M, Picorel R, Jankowiak R, Zazubovich V	22957798 PHYSICS
8	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.	Herascu N, Kell A, Acharya K, Jankowiak R, Blankenship RE, Zazubovich V	24506338 PHYSICS
9	Fluorescence line narrowing and Δ-FLN spectra in the presence of excitation energy transfer between weakly coupled chromophores.	Zazubovich V	25369116 PHYSICS
10	Conformational Changes in Pigment-Protein Complexes at Low Temperatures-Spectral Memory and a Possibility of Cooperative Effects.	Najafi M, Herascu N, Shafiei G, Picorel R, Zazubovich V	25985255 PHYSICS
11	Monte Carlo Modeling of Spectral Diffusion Employing Multiwell Protein Energy Landscapes: Application to Pigment-Protein Complexes Involved in Photosynthesis.	Najafi M, Zazubovich V	26020801 PHYSICS
12	Probing Energy Landscapes of Cytochrome b6f with Spectral Hole Burning: Effects of Deuterated Solvent and Detergent.	Levenberg A, Shafiei G, Lujan MA, Giannacopoulos S, Picorel R, Zazubovich V	28956922 PHYSICS
13	Effect of Saturated Very Long-Chain Fatty Acids on the Organization of Lipid Membranes: A Study Combining (2)H NMR Spectroscopy and Molecular Dynamics Simulations	Adrian Paz Ramos	27351151 CERMM
14	Spectral Hole Burning in Cyanobacterial Photosystem I with P700 in Oxidized and Neutral States.	Herascu N, Hunter MS, Shafiei G, Najafi M, Johnson TW, Fromme P, Zazubovich V	27661089 CHEMBIOCHEM
15	Mechanism of the Nitric Oxide Dioxygenase Reaction of Mycobacterium tuberculosis Hemoglobin N	Lavinia A Carabet	28835102 CERMM
16	Cation-π Interactions between Quaternary Ammonium Ions and Amino Acid Aromatic Groups in Aqueous Solution	Esam A Orabi	29397727 CERMM
17	Modeling Protein S-Aromatic Motifs Reveals Their Structural and Redox Flexibility	Esam A Orabi	29533644 CERMM

Title:	Evidence of Simultaneous Spectral Hole Burning Involving Two Tiers of the Protein Energy Landscape in Cytochrome b6f.
Authors:	Shafiei G, Levenberg A, Lujan MA, Picorel R, Zazubovich V
Link:	https://www.ncbi.nlm.nih.gov/pubmed/31763829?dopt=Abstract
DOI:	10.1021/acs.jpcb.9b09515
Publication:	The journal of physical chemistry. B
Keywords:
PMID:	31763829	Category:	J Phys Chem B	Date Added:	2019-12-13
Dept Affiliation:	PHYSICS 1 Department of Physics , Concordia University , 7141 Sherbrooke Str. West , Montreal , Quebec H4B 1R6 , Canada. 2 Estacion Experimental de Aula Dei (CSIC) , Avda. Montañana 1005 , 50059 Zaragoza , Spain.

Description:

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

J Phys Chem B. 2019 Dec 12;:

Authors: Shafiei G, Levenberg A, Lujan MA, Picorel R, Zazubovich V

Abstract

Cytochrome b6f, with one chlorophyll molecule per protein monomer, is a simple model system whose studies can help achieve a better understanding of nonphotochemical spectral hole burning (NPHB) and single-complex spectroscopy results obtained in more complicated photosynthetic chlorophyll-protein complexes. We are reporting new data and proposing an alternative explanation for spectral dynamics that was recently observed in cytochrome b6f using NPHB. The relevant distribution of the tunneling parameter ? is a superposition of two components that are nearly degenerate in terms of the resultant NPHB yield and represent two tiers of the energy landscape responsible for NPHB. These two components likely burn competitively; we present the first demonstration of modeling a competitive NPHB process. Similar values of the NPHB yield result from distinctly different combinations of barrier heights, shifts along the generalized coordinate d, and/or masses of the entities involved in conformational changes m, with md2 parameter different by a factor of 2.7. Consequently, in cytochrome b6f, the first (at least) 10 h of fixed-temperature recovery preferentially probe different components of the barrier- and ?-distributions encoded into the spectral holes than thermocycling experiments. Both components most likely represent dynamics of the protein and not of the surrounding buffer/glycerol glass.

PMID: 31763829 [PubMed - as supplied by publisher]

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