Before revision: In addition, keratinase from B. licheniformis, alkaline serine protease from Streptomyces sp, subtilisin-like pernisine from Aeropyrum pernix, have been found to degrade PrP.
After revision: alkaline protease from Nocardiopsis sp, nattokinase from B. subtilis, engineered subtilisins from B. lentus and serine protease from three lichen speciesIn addition, keratinase from B. licheniformis, alkaline serine protease from Streptomyces sp, subtilisin-like pernisine from Aeropyrum pernix, have been found to degrade PrP.