Virus radius

Value ~20 nm
Organism Tobacco mosaic virus (TMV)
Reference Santos NC, Castanho MA. Teaching light scattering spectroscopy: the dimension and shape of tobacco mosaic virus. Biophys J. 1996 Sep71(3):1641-50. abstract & P.1648 left column bottom paragraphPubMed ID8874039
Method "The light scattering apparatus was from Brookhaven Instruments, Inc., model 2030AT, equipped with a He-Ne laser (632.8 nm) and a 128 channels autocorrelator, where the last six channels are used for baseline calculation. The UV-Vis absorbance spectrophotometer was from Jasco, model V800. A Sigma 2K15 centrifuge was also used."
Comments "The tobacco mosaic virus (TMV) was the chosen model molecular assembly because: 1) it has a very well-defined geometry 2) it is not spherical (due to symmetry reasons, there is a tendency to emphasize spherical geometries too much) 3) it is very well characterized in terms of size and shape by means of independent techniques (for a review see e.g., Caspar, 1963) and 4) it is a fairly monodispersed system (both size and shape)...1) The geometry of the TMV is invariant with pH (5.0-10.0) and I (0-200 mM) 2) the geometry of the TMV is a cylinder, and 3) the virus dimensions are L˜300nm and r˜20nm." Please note: average virus particle diameter of 18.6nm given in PMID 16617109 p.6508 left column 2nd paragraph
Entered by Uri M
ID 104376