Journal
JOURNAL OF BIOLOGICAL PHYSICS
Volume 38, Issue 4, Pages 657-671Publisher
SPRINGER
DOI: 10.1007/s10867-012-9278-4
Keywords
Capsid; Virus; Electrostatics; Geometry; Icosahedron; Dipole moment
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Funding
- Slovene Agency for Research and Development [P1-0055, J1-4297]
- Ministry of Science, Education, and Sports of the Republic of Croatia [035-0352828-2837]
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We investigate and quantify salient features of the charge distributions on viral capsids. Our analysis combines the experimentally determined capsid geometry with simple models for ionization of amino acids, thus yielding a detailed description of spatial distribution for positive and negative charges across the capsid wall. The obtained data is processed in order to extract the mean radii of distributions, surface charge densities, as well as dipole moment densities. The results are evaluated and examined in light of previously proposed models of capsid charge distributions, which are shown to have to some extent limited value when applied to real viruses.
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