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Abstract

Scrapie and other transmissible spongiform encephalopathies (TSEs) are characterized by similar pathology, biochemistry and genetics. The PrP protein and its conversion to the disease-related isoform, PrPsc, are crucial for the development of all TSEs. Although scrapie is more often studied in laboratory rodents, it is not a natural disease of these animals, and much can be learned from the normal hosts, sheep. Disease incidence is linked to polymorphisms and mutations of the PrP gene. The complex relationships between PrP genotype and the survival of sheep subjected to scrapie infection are now being investigated in terms of the different structure of the PrP protein molecules produced by each allele. It is these structures and their differing abilities to convert to PrPsc that hold the key to understanding why TSEs occur.

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    Nora Hunter

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Hunter, N. Scrapie. Mol Biotechnol 9, 225–234 (1998). https://doi.org/10.1007/BF02915795

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