Wikipedia
Scutelarin
Scutelarin (, taipan activator, Oxyuranus scutellatus prothrombin-activating proteinase) is an enzyme. This enzyme catalyses the following chemical reaction
Selective cleavage of Arg-Thr and Arg-Ile in prothrombin to form thrombin and two inactive fragmentsThis enzyme is isolated from the venom of the Taipan snake ( Oxyuranus scutellatus).