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(A) The amino acid sequence of PrP (108–144). Two putative O-linked glycosylation sites, Ser-132 and Ser-135, are underlined. The predicted secondary-structure profile of PrPSc is also shown. (B) The solution structure of recombinant PrP (sequence 125–228) (PDB ID code 1B10) is produced by using the program molscript (31). β-Strands and α-helices are displayed in yellow and red, respectively. Ser-132 and Ser-135 are shown in blue by space-filled presentation.
