Polyporopepsin
Polyporopepsin, also called Polyporus aspartic proteinase, Irpex lacteus aspartic proteinase or Irpex lacteus carboxyl proteinase B, is an enzyme found in the fungus Irpex lacteus. It catalyses the following chemical reaction:
Irpex lacteus is a basidiomycete also known as Polyporus tulipiferae.