Horrilysin

Horrilysin
Identifiers
EC number 3.4.24.47
CAS number 84056-81-5
Databases
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum

Horrilysin (EC 3.4.24.47, Crotalus horridus metalloendopeptidase, hemorrhagic proteinase IV, Crotalus horridus horridus venom hemorrhagic proteinase) is an enzyme.[1][2] This enzyme catalyses the following chemical reaction

Cleavage of only the single bond Ala14-Leu in the insulin B chain, Ser12-Leu in the A chain, and Ile-Gly, Pro-Ala, and Ser-Trp in melittin

This endopeptidase is present in the venom of the timber rattlesnake (Crotalus horridus horridus)

References

  1. Civello, D.J.; Duong, H.L.; Geren, C.R. (1983). "Isolation and characterization of a hemorrhagic proteinase from timber rattlesnake venom". Biochemistry. 22: 749–755. doi:10.1021/bi00273a007. PMID 6340728.
  2. Civello, D.J.; Moran, J.B.; Geren, C.R. (1983). "Substrate specificity of a hemorrhagic proteinase from timber rattlesnake venom". Biochemistry. 22: 755–762. doi:10.1021/bi00273a008. PMID 6340729.
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