Hydrolyzes gelatin, casein, the chromogenic substrate azocoll and the cuticle of the nematode P.redivivus. Immobilizes P.redivivus. Inhibited by PMSF, SSI, the peptide Phe-Val and by Phe, but not by EDTA. Optimum pH is 6-8. Optimum temperature is 45 degrees Celsius. By easily metabolized forms of nitrogen, including ammonia, nitrate and amino acids, and by glucose. Belongs to the peptidase S8 family.