Pyroglutamate aminopetidase is an enzyme that digests proteins. This enzyme is specific for N-terminal pyroglutamic acids. It cleaves the N-terminal pyroglutamic acid from proteins and peptides prior to Edman degradation. The optimal temperature range is 95 to 100°C and the optimal pH range is 6.0 to 9.0.http://www.creative-enzymes.com/product/Pyroglutamate-Aminopeptidase-From-Pyrococcus-Furiosus-Recombinant_1006.html