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atroxase

n. (context enzyme English) An endopeptidase enzyme, found in the venom of the diamondback rattlesnake ''Crotalus atrox'', that catalyzes the cleavage of His5-Leu, Ser9-His, His10-Leu, Ala14-Leu and Tyr16-Leu of insulin B chain.

Wikipedia
Atroxase

Atroxase is an enzyme. This enzyme catalyses the following chemical reaction

Cleavage of His-Leu, Ser-His, His-Leu, Ala-Leu and Tyr-Leu of insulin B chain

This endopeptidase is present in the venom of the western diamondback rattlesnake ( Crotalus atrox).