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J Phys Condens Matter. 2014 Oct 15;26(41):413101. doi: 10.1088/0953-8984/26/41/413101. Epub 2014 Sep 19.

Close encounters with DNA.

Author information

1
Department of Physics, University of Illinois, Urbana, IL, USA.

Abstract

Over the past ten years, the all-atom molecular dynamics method has grown in the scale of both systems and processes amenable to it and in its ability to make quantitative predictions about the behavior of experimental systems. The field of computational DNA research is no exception, witnessing a dramatic increase in the size of systems simulated with atomic resolution, the duration of individual simulations and the realism of the simulation outcomes. In this topical review, we describe the hallmark physical properties of DNA from the perspective of all-atom simulations. We demonstrate the amazing ability of such simulations to reveal the microscopic physical origins of experimentally observed phenomena. We also discuss the frustrating limitations associated with imperfections of present atomic force fields and inadequate sampling. The review is focused on the following four physical properties of DNA: effective electric charge, response to an external mechanical force, interaction with other DNA molecules and behavior in an external electric field.

PMID:
25238560
PMCID:
PMC4207370
DOI:
10.1088/0953-8984/26/41/413101
[Indexed for MEDLINE]
Free PMC Article

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