Cysteine protease able to degrade azocasein and benzoyl-arginine-beta-naphtylamide (BANA) in vitro. Inhibited by iodoacetamide and trans-epoxysuccinyl-L-leucylamido(4-guanidino)butane (E-64) but not by phenylmethylsulfonyl fluoride (PMSF), pepstatin-A, ethylenediamine tetra acetic acid (EDTA) or ethylene glycol tetraacetic acid (EGTA). Optimum pH is 5-6. Optimum temperature is 25-37 degrees Celsius. Homohexamer, possibly consisting of a trimer of dimers. Glycosylated. Monomer. Belongs to the germin family.