Calreticulin Inhibits Prion Protein PrP-(23–98) Aggregation in Vitro

Abstract

Because prion protein PrP-(23–98) was recently found to polymerize into amyloid-like and proteinase K-resistant spherical aggregates in the presence of NADPH plus copper ions, we tested to determine whether calreticulin (CRT) inhibits PrP-(23–98) aggregation in vitro. The results indicated that CRT suppressed PrP-(23–98) aggregation, and that CRT-mediated solubilization occurred in the aggregates.