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2014 ; 140
(21
): 214101
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Using Markov state models to study self-assembly
#MMPMID24907984
Perkett MR
; Hagan MF
J Chem Phys
2014[Jun]; 140
(21
): 214101
PMID24907984
show ga
Markov state models (MSMs) have been demonstrated to be a powerful method for
computationally studying intramolecular processes such as protein folding and
macromolecular conformational changes. In this article, we present a new approach
to construct MSMs that is applicable to modeling a broad class of multi-molecular
assembly reactions. Distinct structures formed during assembly are distinguished
by their undirected graphs, which are defined by strong subunit interactions.
Spatial inhomogeneities of free subunits are accounted for using a recently
developed Gaussian-based signature. Simplifications to this state identification
are also investigated. The feasibility of this approach is demonstrated on two
different coarse-grained models for virus self-assembly. We find good agreement
between the dynamics predicted by the MSMs and long, unbiased simulations, and
that the MSMs can reduce overall simulation time by orders of magnitude.