Abstract
A RECENT letter in these columns1 contained photomicrographs of mesomorphic or paracrystalline fibres of tobacco mosaic virus which had formed spontaneously in clarified juice expressed from diseased tobacco leaves. Similar fibres have now been prepared from solutions of the pure virus protein by suitably adjusting the pH value of the medium and the salt and virus concentrations. Although the fibres may be produced over a relatively wide range of pH values, the best results are obtained at a pH value of about 5 (near to the point where in the comparative absence of salts, virus solutions are most viscous or gel-like).
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References
Best, Rupert J., NATURE, 139, 628 (1937).
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BEST, R. Artificially Prepared Visible Paracrystalline Fibres of Tobacco Mosaic Virus Nucleoprotein. Nature 140, 547–548 (1937). https://doi.org/10.1038/140547b0
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DOI: https://doi.org/10.1038/140547b0
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