ID 3.4.23.29 DE polyporopepsin. AN Polyporus aspartic proteinase. CA Milk clotting activity, broad specificity, but fails to cleave CA 15-Leu-|-Tyr-16 or 16-Tyr-|-Leu-17 of insulin B chain. CC -!- From the basidiomycete Irpex lacteus (also known as Polyporus CC tulipiferae). CC -!- Belongs to peptidase family A1. CC -!- Formerly EC 3.4.4.17. DR P17576, CARP_IRPLA ; //