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The assembly of proteins in membranes plays a key role in many crucial cellular pathways. Despite their importance, characterizing transmembrane assembly remains challenging for experiments and simulations. Equilibrium molecular dynamics…

软凝聚态物质 · 物理学 2024-08-05 Emil Jackel , Gianmarco Lazzeri , Roberto Covino

We present an analytically solvable model for self-assembly of a molecular complex on a filament. The process is driven by a seed molecule that undergoes facilitated diffusion, which is a search strategy that combines diffusion in…

统计力学 · 物理学 2015-11-04 Ziya Kalay

Fluids with spatial density variations of single or mixed molecules play a key role in biophysics, soft matter and materials science. The fluid structures usually form via spinodal decomposition or nucleation following an instantaneous…

化学物理 · 物理学 2018-01-24 Charley Schaefer

We propose a simple mechanism for the self-replication of protocells. Our main hypothesis is that the amphiphilic molecules composing the membrane bilayer are synthesised inside the protocell through globally exothermic chemical reactions.…

生物物理 · 物理学 2021-10-04 Romain Attal

We develop a self-consistent free-energy framework in which membrane shape and osmotic pressure are determined simultaneously in a finite reservoir by minimizing bending elasticity and solute entropy. Solute conservation makes osmotic…

In recent experiments [T. Basta et al., Proc. Natl. Acad. Sci. U.S.A. 111, 670 (2014)] lipids and membrane proteins were observed to self-assemble into membrane protein polyhedral nanoparticles (MPPNs) with a well-defined polyhedral protein…

生物物理 · 物理学 2017-04-28 Di Li , Osman Kahraman , Christoph A. Haselwandter

Controlling the size and shape of assembled structures is a fundamental challenge in self-assembly, and is highly relevant in material design and biology. Here, we show that specific, but promiscuous, short-range binding interactions make…

软凝聚态物质 · 物理学 2025-07-08 Maximilian C. Hübl , Carl P. Goodrich

Lipid membranes form the barrier between the inside and outside of cells and many of their subcompartments. As such, they bind to a wide variety of nano- and micrometer sized objects and, in the presence of strong adhesive forces, strongly…

软凝聚态物质 · 物理学 2021-08-31 Hendrik T. Spanke , Jaime Agudo-Canalejo , Daniel Tran , Robert W. Style , Eric R. Dufresne

We use computer simulations to study a model, first proposed by Wales [1], for the reversible and monodisperse self-assembly of simple icosahedral virus capsid structures. The success and efficiency of assembly as a function of…

生物大分子 · 定量生物学 2010-02-24 Iain G. Johnston , Ard A. Louis , Jonathan P. K. Doye

Using Monte Carlo simulations, we investigate the self-assembly of model nanoparticles inside a matrix of model equilibrium polymers (or matrix of Wormlike micelles) as a function of the polymeric matrix density and the excluded volume…

软凝聚态物质 · 物理学 2018-04-03 Sk. Mubeena , Apratim Chatterji

Many biological and synthetic materials self-assemble into helical or twisted aggregates. The shape is determined by a complex interplay between elastic forces and the orientation and chirality of the constituent molecules. We study this…

软凝聚态物质 · 物理学 2007-05-23 Robin L. B. Selinger , Jonathan V. Selinger , Anthony P. Malanoski , Joel M. Schnur

The fluid phase diagram of trimer particles composed of one central attractive bead and two repulsive beads was determined as a function of simple geometric parameters using flat-histogram Monte Carlo methods. A variety of self-assembled…

软凝聚态物质 · 物理学 2015-05-20 Harold W. Hatch , Jeetain Mittal , Vincent K. Shen

Working in a three-dimensional variant of Winfree's abstract Tile Assembly Model, we show that, for all $N \in \mathbb{N}$, there is a tile set that uniquely self-assembles into an $N \times N$ square shape at temperature 1 with optimal…

计算几何 · 计算机科学 2014-11-06 David Furcy , Samuel Micka , Scott M. Summers

The desire to create cell-like models for fundamental science and applications has spurred extensive effort towards creating giant unilamellar vesicles (GUVs). However, a route to selectively self-assemble GUVs in bulk has remained elusive.…

软凝聚态物质 · 物理学 2020-07-01 James T. Kindt , Jack W. Szostak , Anna Wang

Motivated by recent studies of two-phase lipid vesicles possessing 2D solid domains integrated within a fluid bilayer phase, we study the shape equilibria of closed vesicles possessing a single planar, circular inclusion. While 2D solid…

软凝聚态物质 · 物理学 2024-04-16 Geunwoong Jeon , Justin Fagnoni , Hao Wan , Maria M. Santore , Gregory M. Grason

Ellipsoidal particles confined at liquid interfaces exhibit complex self-assembly behaviour due to quadrupolar capillary interactions induced by meniscus deformation. These interactions cause particles to attract each other in either…

We study theoretically in the present work the self-assembly of molecules in an open system, which is fed by monomers and depleted in partial or complete clusters. Such a scenario is likely to occur for example in the context of viral…

生物物理 · 物理学 2014-02-18 Martin Castelnovo , Timothée Verdier , Lionel Foret

Small particles transported by a fluid medium do not necessarily have to follow the flow. We show that for a wide class of time-periodic incompressible flows inertial particles have a tendency to spontaneously align in one-dimensional…

流体动力学 · 物理学 2015-05-28 Dmitri Pushkin , Denis Melnikov , Valentina Shevtsova

We conduct a systematic exploration of the energy landscape of vesicle morphologies within the framework of the Helfrich model. Vesicle shapes are determined by minimizing the elastic energy subject to constraints of constant area and…

软凝聚态物质 · 物理学 2023-11-27 Rodrigo B. Reboucas , Hammad A. Faizi , Michael J. Miksis , Petia M. Vlahovska

Self-assembly of proteins is a biological phenomenon which gives rise to spontaneous formation of amyloid fibrils or polymers. The starting point of this phase, called nucleation exhibits an important variability among replicated…

生物大分子 · 定量生物学 2016-03-22 Marie Doumic , Sarah Eugene , Philippe Robert