Energies and pressures in viruses: contribution of nonspecific electrostatic interactions

Details Energies and pressures in viruses: contribution of nonspecific electrostatic interactions Energies and pressures in viruses: contribution of nonspecific electrostatic interactions

2011-08-30

arxiv.org/abs/1108.5905v1

Physics

Biological Physics

23 pages, 9 figures; submitted

Scientific paper

We summarize some aspects of electrostatic interactions in the context of viruses. A simplified but, within well defined limitations, reliable approach is used to derive expressions for electrostatic energies and the corresponding osmotic pressures in single-stranded RNA viruses and double-stranded DNA bacteriophages. The two types of viruses differ crucially in the spatial distribution of their genome charge which leads to essential differences in their free energies, depending on the capsid size and total charge in a quite different fashion. Differences in the free energies are trailed by the corresponding characteristics and variations in the osmotic pressure between the inside of the virus and the external bathing solution.

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