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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:	Probing Energy Landscapes of Cytochrome b6f with Spectral Hole Burning: Effects of Deuterated Solvent and Detergent.
Authors:	Levenberg A, Shafiei G, Lujan MA, Giannacopoulos S, Picorel R, Zazubovich V
Link:	https://www.ncbi.nlm.nih.gov/pubmed/28956922?dopt=Abstract
Publication:
Keywords:
PMID:	28956922	Category:	J Phys Chem B	Date Added:	2019-06-04
Dept Affiliation:	PHYSICS 1 Department of Physics, Concordia University , 7141 Sherbrooke Street West, Montreal, Quebec H4B 1R6, Canada. 2 Estacion Experimental de Aula Dei (CSIC) , Avda. Montañana 1005, 50059 Zaragoza, Spain.

Description:

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

J Phys Chem B. 2017 10 26;121(42):9848-9858

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

Abstract

In non-photochemical spectral hole burning (NPHB) and spectral hole recovery experiments, cytochrome b6f protein exhibits behavior that is almost independent of the deuteration of the buffer/glycerol glassy matrix containing the protein, apart from some differences in heat dissipation. On the other hand, strong dependence of the hole burning properties on sample preparation procedures was observed and attributed to a large increase of the electron-phonon coupling and shortening of the excited-state lifetime occurring when n-dodecyl ß-d-maltoside (DM) is used as a detergent instead of n-octyl ß-d-glucopyranoside (OGP). The data was analyzed assuming that the tunneling parameter distribution or barrier distribution probed by NPHB and encoded into the spectral holes contains contributions from two nonidentical components with accidentally degenerate excited state ?-distributions. Both components likely reflect protein dynamics, although with some small probability one of them (with larger md2) may still represent the dynamics involving specifically the -OH groups of the water/glycerol solvent. Single proton tunneling in the water/glycerol solvent environment or in the protein can be safely excluded as the origin of observed NPHB and hole recovery dynamics. The intensity dependence of the hole growth kinetics in deuterated samples likely reflects differences in heat dissipation between protonated and deuterated samples. These differences are most probably due to the higher interface thermal resistivity between (still protonated) protein and deuterated water/glycerol outside environment.

PMID: 28956922 [PubMed - indexed for MEDLINE]

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