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Studies of how protein fold have shown that the way protein clumps form in the test tube is similar to how proteins form the so-called ``amyloid'' deposits that are the pathological signal of a variety of diseases, among them the memory…

凝聚态物理 · 物理学 2009-10-31 R. A. Broglia , G. Tiana , S. Pasquali , H. E. Roman , E. Vigezzi

Crystallography may be the gold standard of protein structure determination, but obtaining the necessary high-quality crystals is also in some ways akin to prospecting for the precious metal. The tools and models developed in soft matter…

软凝聚态物质 · 物理学 2016-02-10 Diana Fusco , Patrick Charbonneau

Natural protein sequences that self-assemble to form globular structures are compact with high packing densities in the folded states. It is known that proteins unfold upon addition of denaturants, adopting random coil structures. The…

生物大分子 · 定量生物学 2016-12-02 Himadri S. Samanta , Pavel I. Zhuravlev , Michael Hinczewski , Naoto Hori , Shaon Chakrabarti , D. Thirumalai

The self-assembly of particles into organized structures is a key feature of living organisms and a major engineering challenge. While it may proceed through the binding of perfectly matched, puzzle-pieces-like particles, many other…

软凝聚态物质 · 物理学 2024-04-08 Hugo Le Roy , M. Mert Terzi , Martin lenz

The evolution, regulation and sustenance of biological complexity is determined by protein-protein interaction network that is filled with dynamic events. Recent experimental evidences point out that clustering of proteins has a vital role…

组织与器官 · 定量生物学 2007-05-23 RV Krishnan

Theories of protein crystallization based on spheres that form close-packed crystals predict optimal assembly within a `slot' of second virial coefficients and enhanced assembly near the metastable liquid-vapor critical point. However, most…

软凝聚态物质 · 物理学 2014-04-04 Thomas K. Haxton , Stephen Whitelam

Patchy particles are considered to be a good model for protein aggregation. We calculate the equilibrium phase diagram of two-patch colloidal particles undergoing aggregation along with isotropic potential. This investigation demonstrates…

软凝聚态物质 · 物理学 2020-06-24 Isha Malhotra , Sujin B. Babu

Protein chains of the (FG)$_n$ ($n \simeq$ 300) type cap the cytoplasmatic side of the nucleopore complex, which connects the nucleus to the remainder of an eukaryotic cell. We study the properties of three fundamental polymer models that…

生物物理 · 物理学 2020-06-12 Mike Castellano , Steffen Wolf , Thorsten Koslowski

Nanoparticles coated with hydrophilic polymers often show a reduction in unspecific interactions with the biological environment, which improves their biocompatibility. The molecular determinants of this reduction are not very well…

软凝聚态物质 · 物理学 2018-10-30 Giovanni Settanni , Timo Schäfer , Christian Muhl , Matthias Barz , Friederike Schmid

The protein-polysaccharide combinations that lead to electrostatic complex and coacervates formation are the object of extensive research using both layer-by-layer and mixed emulsion approaches. The protein-polysaccharide conjugates…

软凝聚态物质 · 物理学 2022-01-25 Luigi Gentile

This paper builds upon the fundamental work of Niwa et al. [34], which provides the unique possibility to analyze the relative aggregation/folding propensity of the elements of the entire Escherichia coli (E. coli) proteome in a cell-free…

计算工程、金融与科学 · 计算机科学 2015-07-22 Lorenzo Livi , Alessandro Giuliani , Antonello Rizzi

In this work, an improved methodology for studying interactions of proteins in solution by small-angle scattering, is presented. Unlike the most common approach, where the protein-protein correlation functions $g_{ij}(r)$ are approximated…

Conjugated polymer fibers can be used to manufacture various soft fibrous optoelectronic devices, significantly advancing wearable devices and smart textiles. Recently, conjugated polymer-based fibrous electronic devices have been widely…

Understanding protein self-assembly is important for many biological and industrial processes. Proteins can self-assemble into crystals, filaments, gels, and other amorphous aggregates. The final forms include virus capsids and condensed…

软凝聚态物质 · 物理学 2016-04-15 Jennifer J. McManus , Patrick Charbonneau , Emanuela Zaccarelli , Neer Asherie

When disperse in biological fluids, engineered nanoparticles are selectively coated with proteins, resulting in the formation of a protein corona. It is suggested that the protein corona is critical in regulating the conditions of entry…

材料科学 · 物理学 2021-09-21 V. Torrisi , A. Graillot , L. Vitorazi , Q. Crouzet , G. Marletta , C. Loubat , J. -F. Berret

We explore the interplay between the protein-protein interactions network and the expression of the interacting proteins. It is shown that interacting proteins are expressed in significantly more similar cellular concentrations. This is…

分子网络 · 定量生物学 2007-05-23 Shai Carmi , Erez Y. Levanon , Shlomo Havlin , Eli Eisenberg

A framework is presented for understanding the common character of proteins. Proteins are linear chain molecules. However, the simple model of a polymer viewed as spheres tethered together does not account for many of the observed…

统计力学 · 物理学 2009-11-10 Jayanth R. Banavar , Amos Maritan

A simple model of globular proteins which incorporates anisotropic attractions is proposed. It is closely related to models used to model simple hydrogen-bonding molecules such as water. Theories for both the fluid and solid phases are…

软凝聚态物质 · 物理学 2009-10-31 Richard P. Sear

Most technical polymers and many biopolymers contain very different molecular species (unlike chain length, molecular architecture and/or chemical composition) in contrast to pure low molecular weight compounds. This inconsistent…

材料科学 · 物理学 2007-06-25 John Eckelt , B. A. Wolf

We carry out a coarse-grained molecular dynamics simulation of phospholipid vesicles with transmembrane proteins. We measure the mean and Gaussian curvatures of our protein-embedded vesicles and quantitatively show how protein clusters…

软凝聚态物质 · 物理学 2011-02-01 Amir Houshang Bahrami , Mir Abbas Jalali