Pycnoporopepsin

Pycnoporopepsin (, proteinase Ia, Pycnoporus coccineus aspartic proteinase, Trametes acid proteinase) is an enzyme. This enzyme catalyses the following chemical reaction


 * Similar to pepsin A, but narrower, cleaving only three bonds in the B chain of insulin: Ala14-Leu, Tyr16-Leu, and Phe24-Phe

This enzyme is isolated from the basidiomycete Pycnoporus sanguineus.