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Bacterially-produced recombinant prion protein (rPrP) is a frequently used model system for the study of the properties of wild-type and mutant prion proteins by biochemical and biophysical approaches. A range of approaches have been developed for the purification and refolding of untagged rPrP expressed as inclusion bodies in Escherichia coli, including refolding by dialysis and simultaneous on-column...