Abstract
SEVERAL workers at the Rothamsted Experimental Station have recently added to our knowledge of plant virus diseases. A. Kleczkowski (Biochem. J., (2), 38, 160; 1944) has found that tobacco mosaic virus does not combine with pepsin until it has been denatured by heat. Potato virus X, however, is a substrate for the proteolytic activity of pepsin, and combines with it. The same virus, is also a substrate for trypsin, which nevertheless combines more with tobacco mosaic virus, which is not a substrate. This action can explain the reversible inhibition of tobacco mosaic virus by trypsin. Invertase does not combine with either virus.
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Researches in Plant Virus Diseases. Nature 155, 247 (1945). https://doi.org/10.1038/155247b0
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DOI: https://doi.org/10.1038/155247b0