Bothropasin (EC 3.4.24.49, Bothrops jararaca venom metalloproteinase) is an enzyme. This enzyme catalyses the following chemical reaction Bothropasin (EC 3.4.24.49, Bothrops jararaca venom metalloproteinase) is an enzyme. This enzyme catalyses the following chemical reaction This endopeptidase is present in the venom of jararaca snake (Bothrops jararaca).