atrolysin E EC#: 3.4.24.44; ChemWhat Code: 1381032
Product Name
atrolysin E
Example Structure
Synonyms
atrolysin E/D, Crotalus atrox metalloendopeptidase e, Hemorrhagic toxin e, HT-e
EC Number
3.4.24.44
CAS Registry Number
172306-51-3
Comments
A 25.7 kDa hemorrhagic endopeptidase from the venom of the western diamondback rattlesnake (Crotalus atrox) that digests basement membrane components, including the triple helix of type IV collagen. Such action is believed to contribute to the hemorrhagic property by weakening capillary walls. In peptidase family?M12?(astacin family).
Cofactor
Zn2+
History
Reactions
Cleavage of 3-Asn-|-Gln-4, 9-Ser-|-His-10 and 14-Ala-|-Leu-15 bonds in insulin B chain and 14-Tyr-|-Gln-15 and 8-Thr-|-Ser-9 in a chain. Cleaves type Iv collagen at 73-Ala-|-Gln-74 in alpha-1-(IV) and at 7-Gly-|-Leu-8 in alpha-2-(IV).