Source: proteolytic enzyme obtained from bacteria belonging to genus Serratia, present in the gut of the silk worm. Nowadays it is produced by fermentation biotechnology. Reduces capillary permeability and breakdown of proteins and exudates thus supports wound healing. Considered as very effective bacterial enzyme and found to have better effects than trypsin and chymotrypsin with negligible toxicity and side effects. Exerts histamine and bradykinin hydrolyzing and proteolytic effects.