Anton Khmelnitskiy
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View article: When a Twist Makes a Difference: Exploring PCET and ESIPT on a Nonplanar Hydrogen-Bonded Donor–Acceptor System
When a Twist Makes a Difference: Exploring PCET and ESIPT on a Nonplanar Hydrogen-Bonded Donor–Acceptor System Open
Bioinspired benzimidazole-phenol constructs with an intramolecular hydrogen bond connecting the phenol and the benzimidazole have been synthesized to study both proton-coupled electron transfer (PCET) and excited-state intramolecular proto…
View article: Frequency-Domain Spectroscopic Study of the Photosystem I Supercomplexes, Isolated IsiA Monomers, and the Intact IsiA Ring
Frequency-Domain Spectroscopic Study of the Photosystem I Supercomplexes, Isolated IsiA Monomers, and the Intact IsiA Ring Open
The PSI3-IsiA18 supercomplex is one of the largest and most complicated assemblies in photosynthesis. The IsiA ring, composed of 18 IsiA monomers (IsiA18) surrounding the PSI trimer (PSI3), forms under iron-deficient conditions in cyanobac…
View article: Exciton Lifetime Distributions and Population Dynamics in the FMO Protein Complex from <i>Prosthecochloris aestuarii</i>
Exciton Lifetime Distributions and Population Dynamics in the FMO Protein Complex from <i>Prosthecochloris aestuarii</i> Open
Significant protein rearrangement upon excitation and energy transfer in Fenna-Matthews-Olson protein of Prosthecochloris aestuarii results in a modified energy landscape, which induces more changes in pigment site energies than predicted …
View article: Author Correction: The structure of a red-shifted photosystem I reveals a red site in the core antenna
Author Correction: The structure of a red-shifted photosystem I reveals a red site in the core antenna Open
A Correction to this paper has been published: https://doi.org/10.1038/s41467-020-19953-w
View article: On the Red Antenna States of Photosystem I Mutants from Cyanobacteria <i>Synechocystis</i> PCC 6803
On the Red Antenna States of Photosystem I Mutants from Cyanobacteria <i>Synechocystis</i> PCC 6803 Open
To identify the molecular composition of the low-energy states in cyanobacterial Photosystem I (PSI) of Synechocystis PCC6803, we focus on high-resolution (low-temperature) absorption, emission, resonant, and nonresonant hole-burned spectr…
View article: Influence of Hydrogen Bonds on the Electron–Phonon Coupling Strength/Marker Mode Structure and Charge Separation Rates in Reaction Centers from <i>Rhodobacter sphaeroides</i>
Influence of Hydrogen Bonds on the Electron–Phonon Coupling Strength/Marker Mode Structure and Charge Separation Rates in Reaction Centers from <i>Rhodobacter sphaeroides</i> Open
Low-temperature persistent and transient hole-burning (HB) spectra are presented for the triple hydrogen-bonded L131LH + M160LH + M197FH mutant of Rhodobacter sphaeroides. These spectra expose the heterogeneous nature of the P-, B-, and H-…
View article: On uncorrelated inter-monomer Förster energy transfer in Fenna–Matthews–Olson complexes
On uncorrelated inter-monomer Förster energy transfer in Fenna–Matthews–Olson complexes Open
The Fenna–Matthews–Olson (FMO) light-harvesting antenna protein of green sulfur bacteria is a long-studied pigment–protein complex which funnels energy from the chlorosome to the reaction centre where photochemistry takes place. The struct…
View article: Mixed Upper Exciton State of the Special Pair in Bacterial Reaction Centers
Mixed Upper Exciton State of the Special Pair in Bacterial Reaction Centers Open
Excitonic interactions between two closely separated bacteriochlorophyll a molecules (BChls) in the special pair of the reaction center (RC) of purple bacteria determine the positions and relative oscillator strengths of its two excitonic …
View article: Dichotomous Disorder versus Excitonic Splitting of the B800 Band of <i>Allochromatium vinosum</i>
Dichotomous Disorder versus Excitonic Splitting of the B800 Band of <i>Allochromatium vinosum</i> Open
The LH2 antenna complex of the purple bacterium Allochromatium vinosum has a distinct double peak structure of the 800 nm band (B800). Several hypotheses were proposed to explain its origin. Recent 77 K two-dimensional electronic spectrosc…
View article: Impact of Single-Point Mutations on the Excitonic Structure and Dynamics in a Fenna–Matthews–Olson Complex
Impact of Single-Point Mutations on the Excitonic Structure and Dynamics in a Fenna–Matthews–Olson Complex Open
Hole burning (HB) spectroscopy and modeling studies reveal significant changes in the excitonic structure and dynamics in several mutants of the FMO trimer from the Chlorobaculum tepidum. The excited-state decay times ( T1) of the high-ene…
View article: Structure-Based Exciton Hamiltonian and Dynamics for the Reconstituted Wild-type CP29 Protein Antenna Complex of the Photosystem II
Structure-Based Exciton Hamiltonian and Dynamics for the Reconstituted Wild-type CP29 Protein Antenna Complex of the Photosystem II Open
We provide an analysis of the pigment composition of reconstituted wild type CP29 complexes. The obtained stoichiometry of 9 ± 0.6 Chls a and 3 ± 0.6 Chls b per complex, with some possible heterogeneity in the carotenoid binding, is in agr…
View article: Excitonic Energy Landscape of the Y16F Mutant of the <i>Chlorobium tepidum</i> Fenna–Matthews–Olson (FMO) Complex: High Resolution Spectroscopic and Modeling Studies
Excitonic Energy Landscape of the Y16F Mutant of the <i>Chlorobium tepidum</i> Fenna–Matthews–Olson (FMO) Complex: High Resolution Spectroscopic and Modeling Studies Open
We report high-resolution (low-temperature) absorption, emission, and nonresonant/resonant hole-burned (HB) spectra and results of excitonic calculations using a non-Markovian reduced density matrix theory (with an improved algorithm for p…
View article: Impact of single point mutations on the excitonic structure and dynamics in FMO complex
Impact of single point mutations on the excitonic structure and dynamics in FMO complex Open
The FennaMatthewsOlson (FMO) antenna complex from the green sulfur bacterium Chlorobaculum (C.) tepidum is an important model protein to study exciton dynamics and excitation energy transfer in photosynthetic complexes.Single point mutat…