3NHC:
reference: Crystallographic studies of prion protein (PrP) segments suggest how structural changes encoded by polymorphism at residue 129 modulate susceptibility to human prion disease., Apostol MI, Sawaya MR, Cascio D, Eisenberg D, J Biol Chem. 2010 Sep 24;285(39):29671-5. Epub 2010 Aug 4. PMID: 20685658

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