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A series of simulations aimed at elucidating the self-assembly dynamics of spherical virus capsids is described. This little-understood phenomenon is a fascinating example of the complex processes that occur in the simplest of organisms.…

Soft Condensed Matter · Physics 2015-05-19 D. C. Rapaport

The formation of a viral capsid -- the highly-ordered protein shell that surrounds the genome of a virus -- is the canonical example of self-assembly. The capsids of many positive-sense RNA viruses spontaneously assemble from in vitro…

Soft Condensed Matter · Physics 2022-06-08 Rees F. Garmann , Aaron M. Goldfain , Vinothan N. Manoharan

We consider self-assembly of proteins into a virus capsid by the methods of molecular dynamics. The capsid corresponds either to SPMV or CCMV and is studied with and without the RNA molecule inside. The proteins are flexible and described…

Biomolecules · Quantitative Biology 2018-11-05 Karol Wolek , Marek Cieplak

We develop a class of models with which we simulate the assembly of particles into T1 capsid-like objects using Newtonian dynamics. By simulating assembly for many different values of system parameters, we vary the forces that drive…

Biomolecules · Quantitative Biology 2009-11-11 Michael F. Hagan , David Chandler

Understanding the pathways by which viral capsid proteins assemble around their genomes could identify key intermediates as potential drug targets. In this work we use computer simulations to characterize assembly over a wide range of…

Biomolecules · Quantitative Biology 2014-05-15 Jason D Perlmutter , Matthew R Perkett , Michael F Hagan

In order to replicate within their cellular host, many viruses have developed self-assembly strategies for their capsids which are sufficiently robust as to be reconstituted in vitro. Mathematical models for virus self-assembly usually…

Subcellular Processes · Quantitative Biology 2015-02-03 Johanna E. Baschek , Heinrich C. R. Klein , Ulrich S. Schwarz

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…

Biomolecules · Quantitative Biology 2010-02-24 Iain G. Johnston , Ard A. Louis , Jonathan P. K. Doye

I present a review of the theoretical and computational methodologies that have been used to model the assembly of viral capsids. I discuss the capabilities and limitations of approaches ranging from equilibrium continuum theories to…

Biomolecules · Quantitative Biology 2013-01-09 Michael F. Hagan

Capsids of many viruses assemble around nucleic acids or other polymers. Understanding how the properties of the packaged polymer affect the assembly process could promote biomedical efforts to prevent viral assembly or nanomaterials…

Biomolecules · Quantitative Biology 2015-05-18 Aleksandr Kivenson , Michael F. Hagan

We model the spontaneous assembly of a capsid (a virus's closed outer shell) from many copies of identical units, using entirely irreversible steps and only information local to the growing edge. Our model is formulated in terms of (i) an…

Biomolecules · Quantitative Biology 2009-11-11 Stephen D. Hicks , C. L. Henley

During the lifecycle of many single-stranded RNA viruses, including many human pathogens, a protein shell called the capsid spontaneously assembles around the viral genome. Understanding the mechanisms by which capsid proteins selectively…

Biomolecules · Quantitative Biology 2015-02-19 J. D. Perlmutter , M. F. Hagan

The packaging of genetic material within a protein shell, called the capsid, marks a pivotal step in the life cycle of numerous single-stranded RNA viruses. Understanding how hundreds, or even thousands, of proteins assemble around the…

Biological Physics · Physics 2024-09-04 Siyu Li , Guillaume Tresset , Roya Zandi

The kinetics of the self-assembly of nanocomponents into a virus, nanocapsule, or other composite structure is analyzed via a multiscale approach. The objective is to achieve predictability and to preserve key atomic-scale features that…

Chemical Physics · Physics 2015-05-18 Stephen Pankavich , Zeina Shreif , Yinglong Miao , Peter Ortoleva

Large protein assemblies, such as virus capsids, may be coarse-grained as a set of rigid domains linked by generalized (rotational and stretching) harmonic springs. We present a method to obtain the elastic parameters and overdamped…

Biomolecules · Quantitative Biology 2013-05-29 Stephen D. Hicks , C. L. Henley

In this work we study how a viral capsid can change conformation using techniques of Large Deviations Theory for stochastic differential equations. The viral capsid is a model of a complex system in which many units - the proteins forming…

Statistical Mechanics · Physics 2017-07-19 Paolo Cermelli , Giuliana Indelicato , Emilio Zappa

The protein shells, or capsids, of all sphere-like viruses adopt icosahedral symmetry. In the present paper we propose a statistical thermodynamic model for viral self-assembly. We find that icosahedral symmetry is not expected for viral…

Soft Condensed Matter · Physics 2009-11-07 Robijn F. Bruinsma , William M. Gelbart , David Reguera , Joseph Rudnick , Roya Zandi

We develop a theory of aggregation using statistical mechanical methods. An example of a complicated aggregation system with several levels of structures is peptide/protein self-assembly. The problem of protein aggregation is important for…

Biomolecules · Quantitative Biology 2023-07-19 John S. Schreck , Jian-Min Yuan

We develop equilibrium and kinetic theories that describe the assembly of viral capsid proteins on a charged central core, as seen in recent experiments in which brome mosaic virus (BMV) capsids assemble around nanoparticles functionalized…

Biomolecules · Quantitative Biology 2009-05-06 Michael F. Hagan

The coat proteins of many viruses spontaneously form icosahedral capsids around nucleic acids or other polymers. Elucidating the role of the packaged polymer in capsid formation could promote biomedical efforts to block viral replication…

Biomolecules · Quantitative Biology 2015-05-19 Oren M. Elrad , Michael F. Hagan

The assembly of virus capsids from free coat proteins proceeds by a complicated cascade of association and dissociation steps, the great majority of which cannot be directly experimentally observed. This has made capsid assembly a rich…

Quantitative Methods · Quantitative Biology 2015-07-09 Lu Xie , Gregory R. Smith , Russell Schwartz
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