Coarse Graining RNA Nanostructures for Molecular Dynamics Simulations

Details Coarse Graining RNA Nanostructures for Molecular Dynamics Simulations Coarse Graining RNA Nanostructures for Molecular Dynamics Simulations

2010-04-12

arxiv.org/abs/1004.2035v1

Biology

Quantitative Biology

Quantitative Methods

Scientific paper

A series of coarse-grained models have been developed for the study of the molecular dynamics of RNA nanostructures. The models in the series have one to three beads per nucleotide and include different amounts of detailed structural information. Such a treatment allows us to reach, for the systems of thousands of nucleotides, a time scale of microseconds (i.e. by three orders of magnitude longer than in the full atomistic modelling) and thus to enable simulations of large RNA polymers in the context of bionanotechnology. We find that the 3-beads-per-nucleotide models, described by a set of just a few universal parameters, are able to describe different RNA conformations and are comparable in structural precision to the models where detailed values of the backbone P-C4' dihedrals taken from a reference structure are included. These findings are discussed in the context of the RNA conformation classes.

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