A 56 kDa hemorrhagic endopeptidase from the venom of the timber rattlesnake (Crotalus horridus horridus) that cleaves basement membrane, hide powder and fibrinogen.
Cofactor
Zn2+
History
Reactions
Cleavage of only the single bond 14-Ala-|-Leu-15 in the insulin B chain, 12-Ser-|-Leu-13 in the A chain, and Ile-|-Gly, Pro-|-Ala, and Ser-|-Trp in mellitin.