Ruberlysin is an enzyme. This enzyme catalyses the following chemical reactionCleavage of His10-Leu, Ala14-Leu, Tyr16-Leu and Gly23-Phe bonds in the B chain of insulin; His-Pro, Pro-Phe, and Trp-Ser of angiotensin I; and Gly-Phe of Met enkephalin