Influence of the lipid composition of lipid droplets on the efficiency of their protein-free fusion

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Influence of the lipid composition of lipid droplets on the efficiency of their protein-free fusion

Biophysical Reviews. 2023. Vol. 15. Article 1505.

Senchikhin I., Urodkova E. K., Minkevich M. M., Denieva Z. G., Molotkovsky R. J.

The work is dedicated to the study of the fusion of lipid droplets — organelles consisting of a core of fatty acids, such as triolein, surrounded by a monolayer of phospholipids. In view of the relatively simple implementation and universality of the effect of the lipid composition of the LC membranes on the efficiency of their fusion, a targeted change in the lipid composition seems to be a convenient tool for promising therapy of diseases associated with metabolic disorders.

As part of the work, we studied the protein-free fusion of lipid droplets, leading to the unification of their monolayer shells. This process requires overcoming the energy barrier E associated with the topological rearrangement of merging lipid monolayers. We have evaluated the energy barrier and studied the effect of lipid composition on the height of this barrier.

Research target: Chemistry Physics Nanotechnologies

TBAT as “Multitool” Catalyst for Polysiloxane Synthesis, Modification, and Recycling

Лосев М. А., Козлов А. С., Chusov D. et al., ACS Catalysis 2026 Vol. 16 No. 10 P. 9380–9386

A convenient, stable, and non-toxic substance, tetrabutylammonium difluorotriphenylsilicate (TBAT), can be used as an organocatalyst in all stages of polymer lifetime: synthesis, modification, and recycling. The fluorine-containing initiator showed high activity in the polymerization of siloxanes compared to classic organocatalytic systems. Using kinetically controlled ROP, a high-molecular-weight PDMS (Mn up to 820 𝑘𝑔/𝑚𝑜𝑙) was prepared at room ...

Added: May 22, 2026

Reductive coupling of nitroarenes with carboxylic acids – a direct route to amide synthesis

Лосев М. А., Козлов А. С., Клюев Ф. С. et al., Organic and Biomolecular Chemistry 2023 Vol. 21 No. 42 P. 8477–8481

A simple and atom-efficient way to prepare amides directly from carboxylic acids and nitroarenes was developed. Carbon monoxide as a sole reducing agent provides the ultimate selectivity of the protocol. A straightforward and selective way for the preparation of amides from nitroarenes and carboxylic acids using carbon monoxide as a reductant was developed. This protocol ...

Added: May 22, 2026

Оптические методы детектирования единичных биомолекул: визуализация, сенсорика, секвенирование молекул ДНК

Melentiev P. N., Калмыков А. С., Гритченко А. С. et al., Успехи физических наук 2024 Т. 194 № 11 С. 1130–1145

Представлен краткий обзор достигнутого уровня оптических методов детектирования единичных молекул в биомедицинских приложениях. Показано, что регистрация флуоресценции единичных молекул красителей, ковалентно связанных с антителами (биомолекулами), совместно с использованием современных методов нанофотоники может быть применена для решения различных задач в биологии и медицине: визуализации биомолекул, токсинов, вирусных частиц, определения ультранизких концентраций аналитов напрямую во взятой пробе, ...

Added: May 21, 2026

VACUUM DISCHARGE DRIVEN BY STRIPE LINE STORAGE AS A SOURCE OF EUV RADIATION

Antsiferov P.S., Stepanov L.V., Matiukhin N. D., Review of Scientific Instruments 2025 Vol. 96 No. 12 Article 123506

The article presents the discharge plasma based source of extreme ultraviolet (EUV) radiation. The discharge circuit has been driven by means of stripe line storage with working voltage 10.5 kV. The main feature of the proposed source is that plasma electrons acquire the energy, necessary for the production of multiply charged ions with ionization potentials ...

Added: May 20, 2026

Регистрация спектров на 6.65 метровом ВУФ-УФ спектрометре с помощью многоканального детектора

Анциферов П. С., Степанов Л. В., Матюхин Н. Д., Оптика и спектроскопия 2026 Т. 134 № 2 С. 214–218

Сообщено о разработке системы регистрации спектров на ПЗС-линейке для уникального ВУФ спектрометра, построенного на основе сферической дифракционной решетки с радиусом 6.65 m. Была использована линейка HAMAMATSU S11156-2048-02, которая устанавливалась по касательной к окружности Роуланда с возможностью механического перемещения для сканирования спектра. Были получены спектрограммы в диапазоне длин волн 2130-2270 Angstrem. Описана методика сшивки регистрируемых спектральных ...

Added: May 20, 2026

ML-based Fast Simulation of FARICH Responses

Shipilov F., Barnyakov A., Ivanov A. et al., / Series Physics "arxiv.org". 2026.

A fast simulation of the detector response is a vital task in high-energy physics (HEP). Traditional Monte-Carlo methods form the backbone of modern particle physics simulation software but are computationally expensive. We present a machine-learning-based approach to fast simulation of the Focusing Aerogel Ring Imaging Cherenkov (FARICH) detector response. Given a particle track and momentum, ...

Added: May 19, 2026

Scaling Up Molecular Hydrodynamics of Non-Laminar Flows with GPU-Aware MPI

Khnkoian G., Galigerov V., Grishichkin Y. et al., , in: Parallel Computational Technologies, 19th International Conference, PCT 2025, Moscow, Russia, April 8–10, 2025, Revised Selected Papers. (CCIS, volume 2891)Vol. 2891.: Springer, 2026. P. 532–545.

This work presents atomic-scale modeling of the perturbed flow of a Lennard-Jones fluid in a quasi-two-dimensional system containing one billion atoms. A statistically stationary flow regime corresponding to a Reynolds number of Re ≈ 1000 has been achieved, the flow structure has been analyzed, and the energy spectrum of velocities has been calculated. The results ...

Added: May 19, 2026

On a Possible Method for Separating CO Lines from the Spectrum of the Cosmic Microwave Background

Malinovsky A. M., Пилипенко С. В., Mikhalchenko A. O. et al., Astronomy Reports 2026 Vol. 70 P. 1–6

Radiation from rotational transitions of CO molecules in distant galaxies creates a chaotic background with an intensity reaching 1000 Jy/sr at a wavelength of approximately 1 mm. This background will pose a serious problem, when measuring spectral distortions of the cosmic microwave background, in particular, the mu-distortion, which presumably has an intensity of less than ...

Added: May 19, 2026

Broadband photoluminescence of epitaxial bismuth nanowires and planar nanostructures

Kaveev A. K., Fedorov V. V., Pavlov A. V. et al., Journal of Materials Chemistry C 2026 Vol. 14 No. 7 P. 2697–2705

Bismuth nanostructures represent a promising material platform for semiconductor nanooptoelectronics and colorimetry owing to the multi-colored light reflection and quantum confinement. In this work, we study the photoluminescent properties of bismuth nanostructures grown using molecular beam epitaxy on the planar CaF2/Si(111) surface. We demonstrate the different surface morphologies of Bi, ranging from planar films obtained ...

Added: May 19, 2026

STM study of single phosphorus incorporation into silicon by heating PBr3 on Si(100)

Pavlova T., V.M. Shevlyuga (Шевлюга В. М., Applied Surface Science 2026 Vol. 736 P. 166813–166813

The objective of miniaturizing doped areas in silicon, with the ultimate goal of achieving atomic-precision doping, requires a fundamental understanding of the dopant incorporation process at the atomic level. We present a combined scanning tunneling microscopy (STM) and density functional theory (DFT) investigation of single phosphorus atom incorporation into the Si(100) surface. Phosphorus was supplied ...

Added: May 19, 2026

Single-photon diamond sources created by nature

Pasternak D., Romshin A., Khmelnitsky Р. et al., Carbon 2026 Vol. 256 Article 121655

A single-photon source (SPS) is a key component required for quantum communication devices. We report the discovery of bright diamond-based SPS created by nature. It is shown that narrow (≤2 nm) lines observed in the 500-800 nm range in photoluminescence (PL) spectra of the surface layer of untreated Yakut diamonds rich in nitrogen and hydrogen are linked to ...

Added: May 19, 2026

Dataset of solubility values for organic compounds in binary mixtures of solvents at various temperatures

Bezzubov S., Malikov D., Krasnov L. et al., Scientific data 2026 Vol. 13 Article 727

Solubility is a crucial property of organic compounds, impacting their potential applications in synthetic chemistry, materials science and drug design. Moreover, in technological processes mixtures of solvents are often utilized, making the solubility assessment more complicated. Predicting solubility values in mixtures of solvents from a molecular structure can help to address this issue, although a ...

Added: May 19, 2026

Optical features of nanoplatelets modified with chiral ligands

A.M. Smirnov, Kurtina D. A., Saitov S. R. et al., Optical Materials: X 2026 Vol. 30 Article 100441

Chiral semiconductor nanostructures and nanoparticles are promising materials for applications in biological sensing, enantioselective separation, photonics, and spin-polarized devices. Here we performed a detailed analysis of optical properties of chiral CdSe nanoplatelets with thickness of 2 and 3 monolayers (ML) with Nacetyl-L-cysteine ligands. We studied the absorption spectra peculiarities, analyzed time-resolved photoluminescence and investigated circular ...

Added: May 18, 2026

Temperature-driven charge transport in annealed CdSe/CdS nanoplatelets film

Smirnov A., Mantsevich V. N., Saitov S. R. et al., Journal of Applied Physics 2026 Vol. 139 Article 185702

This work presents a comprehensive investigation into the temperature-dependent thermally stimulated conductivity and photoconductivity of vacuum-annealed thin films based on core–shell CdSe/CdS nanoplatelets passivated with oleic acid ligands. Controlled thermal annealing under vacuum conditions leads to a substantial increase in both dark and photoinduced conductivity, which is primarily attributed to partial desorption of the ligands. ...

Added: May 18, 2026

Направленность вывода излучения из кольцевых микролазеров с нарушенной вращательной симметрией

Масютин Д. А., Moiseev E., Komarov S. et al., Письма в Журнал технической физики 2026 Т. 52 № 7 С. 27–30

Исследованы инжекционные полупроводниковые микролазеры с кольцевым резонатором радиусом 15 мкм с несимметричным расположением внутреннего отверстия резонатора. Показано, что асимметрия обеспечивает формирование в диаграмме направленности двух лепестков излучения, разориентированных на 50° относительно оси смещения внутреннего отверстия. Измеренная добротность резонаторов сопоставима с добротностью дисковых резонаторов и находится на уровне ∼ 10^6. ...

Added: May 18, 2026

Plasmonic Au-Assisted g-C3N4/CeO2 Heterojunction for Enhanced Photocatalytic Breakdown of Organic Pollutants

Rathish S., Andrey S. Vasenko, Thazhathenair A. et al., The Journal of Physical Chemistry Letters 2026 Vol. 17 No. 18 P. 5386–5394

We demonstrate and rationalize the effect of Au nanoparticles (NPs) on the hierarchical g-C3N4/CeO2 heterojunction. g-C3N4/CeO2 decorated with monodispersed plasmonic Au NPs was synthesized. Detailed analyses showed that CeO2 nanocubes and monodispersed Au NPs were evenly distributed over the 2D g-C3N4 surface, forming a robust interface enriched with abundant active sites. The structure enabled efficient separation of photogenerated charge ...

Added: May 16, 2026

MDProcessing.jl: Julia Programming Language Application for Molecular Dynamics Trajectory Processing

Pisarev V., Panov M., , in: Supercomputing: 9th Russian Supercomputing Days, RuSCDays 2023, Moscow, Russia, September 25–26, 2023, Revised Selected Papers, Part II* 2.: Springer, 2023. P. 209–222.

Molecular simulations and molecular dynamics in particular are among the most performance-demanding computational methods. As the scale of simulations increases, the task of processing the simulation results becomes a computationally-hungry problem as well. The usual approach to build easy-to-use post-processing tools is based on providing an interface to a high-performance library called from a scripting ...

Added: November 11, 2025

Immune Antibodies Recognizing the Stem Region of SARS-CoV-2 Spike Protein: Molecular Modelling and In Vitro Study of Synthetic Peptides Presentation to the Antibodies

Aliper E., Ryzhov I., Obukhova P. et al., Biochimica et Biophysica Acta - Biomembranes 2026 Vol. 1868 No. 1 Article 184472

Antibodies to peptide 1147 (amino acids 1147-61) of the SARS-CoV-2 protein S are highly diagnostic. Peptide 1147, although located in a region that is partly spatially hidden in the intact protein, is not subject to mutations, suggesting therapeutic potential. The aim of this study was to elucidate the architecture of this region and the way ...

Added: October 20, 2025

Diverse Interactions of Sterols with Amyloid Precursor Protein Transmembrane Domain Can Shift Distribution Between Alternative Amyloid-β Production Cascades in Manner Dependent on Local Lipid Environment

Volynsky P., Urban A., Pavlov K. et al., International Journal of Molecular Sciences 2025 Vol. 26 No. 2 Article 553

Alzheimer’s disease (AD) pathogenesis is correlated with the membrane content of various lipid species, including cholesterol, whose interactions with amyloid precursor protein (APP) have been extensively explored. Amyloid-β peptides triggering AD are products of APP cleavage by secretases, which differ depending on the APP and secretase location relative to ordered or disordered membrane microdomains. We used high-resolution NMR to probe ...

Added: October 12, 2025

Effect of the Cut-Off Radius of the Interatomic Potential on the Surface Tension of n-Nonane in the SAFT-γ Mie Model

Smirnov O. M., Pisarev V., Lenev D. Y., Russian Journal of Physical Chemistry A 2024 Vol. 98 No. 14 P. 3384–3388

Vapor–liquid surface tension is calculated on the evaporation curve of n-nonane in the SAFT-γ Mie model. The calculations are made via molecular dynamics for temperatures in the range of 410 to 505 K. The effect the cutoff radius of the interparticle interaction potential in the model has on the coefficient of surface tension and the ...

Added: June 25, 2025

Shear Viscosity of Short-Chain Imidazolium Ionic Liquids from Equilibrium and Nonequilibrium Molecular Dynamics: Atomistic and Coarse-Grained Levels

Odintsova E., Darya L. Gurina, Kruchinin S. E. et al., Industrial & Engineering Chemistry Research 2025 Vol. 64 No. 6 P. 3531–3543

The ability to predict transport properties, such as viscosity, through molecular simulation is a valuable advantage. Obtaining reliable estimates for these properties can be more challenging compared to equilibrium properties. Our manuscript focuses on an in-depth discussion of two prominent methods for predicting transport properties: equilibrium molecular dynamics (EMD) using the Green−Kubo approach and nonequilibrium ...

Added: February 5, 2025

Thermal stability of monolayer fullerene networks: A molecular dynamics study with machine-learning potential

Logunov M., Lazarev M., Computational Materials Science 2025 Vol. 248 P. 113572–0

Two-dimensional C60 carbon allotropes have gained much attention since their first synthesis in 2022, but many of their thermophysical and mechanical properties remain unreported in the literature. In this article, we performed a high-temperature molecular dynamics study of quasi-hexagonal (qHP) and quasi-tetragonal (qTP) C60 phases using the modern machine-learning interatomic potential GAP-20. We show that, contrary to ...

Added: January 17, 2025

Structure-function analyses of human TRPV6 ancestral and derived haplotypes

Neuberger A., Shalygin A., Trofimov Y. A. et al., Structure 2025 Vol. 33 No. 1 P. 91–103.e5

TRPV6 is a Ca2+ selective channel that mediates calcium uptake in the gut and contributes to the development and progression of human cancers. TRPV6 is represented by the ancestral and derived haplotypes that differ by three non-synonymous polymorphisms, located in the N-terminal ankyrin repeat domain (C157R), S1–S2 extracellular loop (M378V), and C-terminus (M681T). The ancestral and derived haplotypes were ...

Added: December 9, 2024

Force field comparison for molecular dynamics simulations of liquid membranes

Kashurin O., Kondratyuk N., Lankin A. et al., Journal of Molecular Liquids 2024 Vol. 416 Article 126347

To accelerate the development of liquid ion-selective barriers based on ethers, we compare the all-atom force fields GAFF, OPLS-AA with charge correction 1.14*CM1A (OPLS-AA/CM1A), CHARMM version 36 (CHARMM36), and COMPASS for diisopropyl ether (DIPE) to determine the most appropriate model for further simulations of liquid membranes. Utilizing the selected force fields, we calculate the density and shear viscosity of ...

Added: November 27, 2024