2014/03/10 by Teresa Ruiz-Herrero, Michael F. Hagan, Ruiz-Herrero, Teresa +1
Biochemistry, Genetics and Molecular Biology · Environmental Science · Medicine · #Bacteriophages and microbial interactions #FOS: Biological sciences #FOS: Physical sciences #Lipid Membrane Structure and Behavior #Monoclonal and Polyclonal Antibodies Research #Soft Condensed Matter (cond-mat.soft) #Subcellular Processes (q-bio.SC)
paper · pdf · doi:10.48550/arxiv.1403.2269
openalex publication_date 2014/03/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
For many viruses assembly and budding occur simultaneously during virion formation. Understanding the mechanisms underlying this process could promote biomedical efforts to block viral propagation and enable use of capsids in nanomaterials applications. To this end, we have performed molecular dynamics simulations on a coarse-grained model that describes virus assembly on a fluctuating lipid membrane. Our simulations show that the membrane can promote association of adsorbed subunits through dimensional reduction, but also can introduce barriers that inhibit complete assembly. We find several mechanisms, including one not anticipated by equilibrium theories, by which membrane microdomains, such as lipid rafts, can enhance assembly by reducing these barriers. We show how this predicted mechanism can be experimentally tested. Furthermore, the simulations demonstrate that assembly and budding depend crucially on the system dynamics via multiple timescales related to membrane deformation, protein diffusion, association, and adsorption onto the membrane.