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Simple and Robust in vivo and in vitro Approach for Studying Virus Assembly
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Simple and Robust in vivo and in vitro Approach for Studying Virus Assembly

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Pathways for virus assembly around nucleic acids.

Jason D Perlmutter1, Matthew R Perkett1, Michael F Hagan1

  • 1Martin Fisher School of Physics, Brandeis University, Waltham, MA 02454, USA.

Journal of Molecular Biology
|July 19, 2014
PubMed
Summary
This summary is machine-generated.

Computer simulations reveal two distinct viral capsid assembly pathways: ordered and disordered. Predicting these pathways could lead to new antiviral drug targets by controlling protein-protein and protein-genome interactions.

Keywords:
self assemblyviral capsid

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Area of Science:

  • Computational biophysics
  • Virology
  • Molecular assembly

Background:

  • Viral capsid assembly is crucial for viral replication and represents a potential target for antiviral therapies.
  • Understanding the factors governing capsid protein self-assembly is key to designing strategies to inhibit viral infection.

Purpose of the Study:

  • To characterize viral capsid assembly pathways using computer simulations.
  • To identify key intermediates and predict assembly behavior under varying conditions.
  • To explore strategies for disrupting viral assembly as a therapeutic approach.

Main Methods:

  • Utilized extensive computer simulations to model viral capsid protein assembly.
  • Varied capsid protein-protein interaction strengths and solution ionic strengths to explore diverse assembly conditions.
  • Analyzed simulation trajectories to identify distinct assembly pathway classes and their characteristics.

Main Results:

  • Identified two primary classes of viral capsid assembly pathways: predominantly ordered and predominantly disordered intermediates.
  • Demonstrated that protein-protein and protein-genome binding affinities can predict the dominant assembly pathway.
  • Generated phase diagrams illustrating the relationship between control parameters and assembly pathway dominance.

Conclusions:

  • Knowledge of assembly pathways and their governing parameters can inform the development of antiviral strategies.
  • The identified assembly pathway classes are potentially distinguishable using experimental techniques like single-molecule fluorescence correlation spectroscopy and time-resolved small-angle X-ray scattering.