PERFORM Publications

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Title		Authors	PubMed ID
1	Nonphotochemical Spectral Hole Burning Study of Modified LH2 Complex from em Rbl. acidophilus /em : Do Parts of the Pigment Molecule Affect Small Light-Induced Structural Changes?	Levenberg A; Trempe A; Lujan MA; Picorel R; Zazubovich V;	41802209 PHYSICS
2	Rigorous Quantum-Mechanical Modeling of Tunneling-Based Structural Changes Associated with Line Shifts in Optical Spectroscopy Experiments in Pigment-Protein Complexes	Eng-Michell J; Yi B; Tan X; Garashchuk S; Zazubovich V;	41662623 PHYSICS
3	High-Resolution Frequency-Domain Spectroscopic and Modeling Studies of Photosystem I (PSI), PSI Mutants and PSI Supercomplexes	Zazubovich V; Jankowiak R;	38612659 PHYSICS
4	Identification of Residues Potentially Involved in Optical Shifts in the Water-Soluble Chlorophyll a-Binding Protein through Molecular Dynamics Simulations	Mai M; Zazubovich V; Mansbach RA;	38299975 PHYSICS
5	Frequency-Domain Spectroscopic Study of the Photosystem I Supercomplexes, Isolated IsiA Monomers, and the Intact IsiA Ring	Reinot T; Khmelnitskiy A; Zazubovich V; Toporik H; Mazor Y; Jankowiak R;	36065077 PHYSICS
6	Functional analysis of low-grade glioma genetic variants predicts key target genes and transcription factors.	Manjunath M; Yan J; Youn Y; Drucker KL; Kollmeyer TM; McKinney AM; Zazubovich V; Zhang Y; Costello JF; Eckel-Passow J; Selvin PR; Jenkins RB; Song JS;	33130899 PHYSICS
7	Bound detergent molecules in bacterial reaction centers facilitate detection of tetryl explosive.	Modafferi D, Zazubovich V, Kálmán L	32632533 PHYSICS
8	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
9	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
10	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
11	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
12	Self-assembly and sensor response of photosynthetic reaction centers on screen-printed electrodes.	Bhalla V, Zazubovich V	22027137 PHYSICS
13	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
14	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
15	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
16	On the Controversial Nature of the 825 nm Exciton Band in the FMO Protein Complex.	Kell A, Acharya K, Zazubovich V, Jankowiak R	26269993 PHYSICS
17	Fluorescence line narrowing and Δ-FLN spectra in the presence of excitation energy transfer between weakly coupled chromophores.	Zazubovich V	25369116 PHYSICS
18	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
19	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
20	On the Conflicting Estimations of Pigment Site Energies in Photosynthetic Complexes: A Case Study of the CP47 Complex.	Reinot T, Chen J, Kell A, Jassas M, Robben KC, Zazubovich V, Jankowiak R	27279733 PHYSICS
21	A simple and efficient method to prepare pure dimers and monomers of the cytochrome b 6 f complex from spinach.	Luján MA, Lorente P, Zazubovich V, Picorel R	28374305 PHYSICS
22	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
23	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

Title:	On the Conflicting Estimations of Pigment Site Energies in Photosynthetic Complexes: A Case Study of the CP47 Complex.
Authors:	Reinot T, Chen J, Kell A, Jassas M, Robben KC, Zazubovich V, Jankowiak R
Link:	https://www.ncbi.nlm.nih.gov/pubmed/27279733?dopt=Abstract
Publication:
Keywords:
PMID:	27279733	Category:	Anal Chem Insights	Date Added:	2019-06-04
Dept Affiliation:	PHYSICS 1 Department of Chemistry, Kansas State University, Manhattan, KS, USA. 2 Department of Physics, Concordia University, Montreal, QC, Canada. 3 Department of Chemistry, Kansas State University, Manhattan, KS, USA.; Department of Physics, Kansas State University, Manhattan, KS, USA.

Description:

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

Anal Chem Insights. 2016;11:35-48

Authors: Reinot T, Chen J, Kell A, Jassas M, Robben KC, Zazubovich V, Jankowiak R

Abstract

We focus on problems with elucidation of site energies [Formula: see text] for photosynthetic complexes (PSCs) in order to raise some genuine concern regarding the conflicting estimations propagating in the literature. As an example, we provide a stern assessment of the site energies extracted from fits to optical spectra of the widely studied CP47 antenna complex of photosystem II from spinach, though many general comments apply to other PSCs as well. Correct values of [Formula: see text] for chlorophyll (Chl) a in CP47 are essential for understanding its excitonic structure, population dynamics, and excitation energy pathway(s). To demonstrate this, we present a case study where simultaneous fits of multiple spectra (absorption, emission, circular dichroism, and nonresonant hole-burned spectra) show that several sets of parameters can fit the spectra very well. Importantly, we show that variable emission maxima (690-695 nm) and sample-dependent bleaching in nonresonant hole-burning spectra reported in literature could be explained, assuming that many previously studied CP47 samples were a mixture of intact and destabilized proteins. It appears that the destabilized subpopulation of CP47 complexes could feature a weakened hydrogen bond between the 13(1)-keto group of Chl29 and the PsbH protein subunit, though other possibilities cannot be entirely excluded, as discussed in this work. Possible implications of our findings are briefly discussed.

PMID: 27279733 [PubMed]

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