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Protein fibril accumulation at interfaces is an important step in many physiological processes and neurodegenerative diseases as well as in designing materials. Here we show, using $\beta$-lactoglobulin fibrils as a model, that semiflexible…

Biomolecules · Quantitative Biology 2015-05-20 Sophia Jordens , Emily E. Riley , Ivan Usov , Lucio Isa , Peter D. Olmsted , Raffaele Mezzenga

Non-equilibrium cluster-cluster aggregation of particles diffusing in or at the cell membrane has been hypothesized to lead to domains of finite size in different biological contexts such as lipid rafts, cell adhesion complexes, or…

Soft Condensed Matter · Physics 2023-08-30 Renaud Baillou , Jonas Ranft

Enzymatic molecules that actively support many cellular processes, including transport, cell division and cell motility, are known as motor proteins or molecular motors. Experimental studies indicate that they interact with each other and…

Biological Physics · Physics 2015-05-20 Daniel Celis-Garza , Hamid Teimouri , Anatoly B. Kolomeisky

Cell adhesion proteins are transmembrane proteins that bind cells to their environment. These proteins typically cluster into disk-shaped or linear structures. Here we show that such clustering patterns spontaneously emerge when the protein…

Soft Condensed Matter · Physics 2023-07-10 Shao-Zhen Lin , Rishita Changede , Michael P. Sheetz , Jacques Prost , Jean-Francois Rupprecht

Intracellular transport is vital for the proper functioning and survival of a cell. Cargo (proteins, vesicles, organelles, etc.) is transferred from its place of creation to its target locations via molecular motor assisted transport along…

Biological Physics · Physics 2016-11-24 Anne E. Hafner , Heiko Rieger

Fragility index and cooperativity length characterizing the molecular mobility in the amorphous phase are for the first time calculated in drawn polylactide (PLA). The microstructure of the samples is investigated from wide-angle X-ray…

Soft Condensed Matter · Physics 2015-09-18 Nicolas Delpouve , Laurent Delbreilh , Grégory Stoclet , Allisson Saiter , Eric Dargent

How do living cells achieve sufficient abundances of functional protein complexes while minimizing promiscuous non-functional interactions? Here we study this problem using a first-principle model of the cell whose phenotypic traits are…

Biomolecules · Quantitative Biology 2011-01-04 Muyoung Heo , Sergei Maslov , Eugene I. Shakhnovich

The spatiotemporal organisation of proteins and lipids on the cell surface has direct functional consequences for signaling, sorting and endocytosis. Earlier studies have shown that multiple types of membrane proteins including…

Soft Condensed Matter · Physics 2022-09-14 Suvrajit Saha , Amit Das , Chandrima Patra , Anupama Ambika Anilkumar , Parijat Sil , Satyajit Mayor , Madan Rao

Myosin motor proteins drive vigorous steady-state fluctuations in the actin cytoskeleton of cells. Endogenous embedded semiflexible filaments such as microtubules, or added filaments such as single-walled carbon nanotubes are used as novel…

Biological Physics · Physics 2016-06-21 J. Gladrow , N. Fakhri , F. C. MacKintosh , C. F. Schmidt , C. P. Broedersz

Contractile actomyosin network flows are crucial for many cellular processes including cell division and motility, morphogenesis and transport. How local remodeling of actin architecture tunes stress production and dissipation and regulates…

Equilibrium aspects of molecular recognition of rigid biomolecules are investigated using coarse-grained lattice models. The analysis is carried out in two stages. First an ensemble of probe molecules is designed with respect to the target…

Biological Physics · Physics 2009-11-13 Hans Behringer , Andreas Degenhard , Friederike Schmid

Fibrinogen, the monomeric unit of fibrin, the main constituent of blood clot, has a very complex structure. The fibrinogen builds the fibrin fiber and network through the half-staggered packing via knob-hole interaction and the $\alpha$C…

Soft Condensed Matter · Physics 2025-04-01 Vivek Sharma , Poulomi Sadhukhan

The Worldwide spread of the Omicron lineage variants has now been confirmed. It is crucial to understand the process of cellular life and to discover new drugs need to identify the important proteins in a protein interaction network (PPIN).…

Molecular Networks · Quantitative Biology 2024-08-06 Mamata Das , Selvakumar K. , P. J. A. Alphonse

The dynamics of local cortical networks are irregular, but correlated. Dynamic excitatory--inhibitory balance is a plausible mechanism that generates such irregular activity, but it remains unclear how balance is achieved and maintained in…

Neurons and Cognition · Quantitative Biology 2020-04-28 Alan Eric Akil , Robert Rosenbaum , Krešimir Josić

Motivated by the biologically important and complex phenomena of A\beta\ peptide aggregation in Alzheimer's disease, we introduce a model and simulation methodology for studying protein aggregation that includes extra-cellular aggregation,…

Quantitative Methods · Quantitative Biology 2018-03-02 Youval Dar , Benjamin Bairrington , Daniel Cox , Rajiv Singh

Integrin is an important transmembrane receptor protein which remodels the actin network and anchors the cell membrane towards the extracellular matrix via mechanochemical pathways. The clustering of specific lipids and lipid-anchored…

Biological Physics · Physics 2022-08-05 Tapas Singha , Anirban Polley , Mustansir Barma

We study the dynamics of pattern formation in a minimal model for active mixtures made of microtubules and molecular motors. We monitor the evolution of the (conserved) microtubule density and of the (non-conserved) nematic order parameter,…

Soft Condensed Matter · Physics 2020-05-25 Ivan Maryshev , Alexander Morozov , Andrew B. Goryachev , Davide Marenduzzo

Block copolymer (BCP) melts play a critical role in the design of thermoplastics, owing in large part to the creation of alternating nano-scale domains of soft and stiff components. Considerable attention has been given to the…

Soft Condensed Matter · Physics 2026-03-31 Krista G. Schoonover , Gaurav Rawat , Emily B. Pentzer , Michael S. Dimitriyev

Many complex networks from the World-Wide-Web to biological networks are growing taking into account the heterogeneous features of the nodes. The feature of a node might be a discrete quantity such as a classification of a URL document as…

Physics and Society · Physics 2013-05-30 Luca Ferretti , Michele Cortelezzi , Bin Yang , Giacomo Marmorini , Ginestra Bianconi

The analysis of the activity of neuronal cultures is considered to be a good proxy of the functional connectivity of in vivo neuronal tissues. Thus, the functional complex network inferred from activity patterns is a promising way to…

Neurons and Cognition · Quantitative Biology 2014-09-09 Sara Teller , Clara Granell , Manlio De Domenico , Jordi Soriano , Sergio Gomez , Alex Arenas