Horrilysin

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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

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

External links

Horrilysin at the US National Library of Medicine Medical Subject Headings (MeSH)

Proteases: metalloendopeptidases (EC 3.4.24)

ADAM proteins	Alpha secretases ADAM9 ADAM10 ADAM17 ADAM19 ADAM2 ADAM7 ADAM8 ADAM11 ADAM12 ADAM15 ADAM18 ADAM22 ADAM23 ADAM28 ADAM33 ADAMTS1 ADAMTS2 ADAMTS3 ADAMTS4 ADAMTS5 ADAMTS8 ADAMTS9 ADAMTS10 ADAMTS12 ADAMTS13

Matrix metalloproteinases	Collagenases MMP1 MMP8 Gelatinases MMP2 MMP9 MMP3 MMP7 MMP10 MMP11 MMP12 MMP13 MMP14 MMP15 MMP16 MMP17 MMP19 MMP20 MMP21 MMP23A MMP23B MMP24 MMP25 MMP26 MMP27 MMP28

Other	Neprilysin Procollagen peptidase Thermolysin Pregnancy-associated plasma protein A Bone morphogenetic protein 1 Lysostaphin Insulin-degrading enzyme ZMPSTE24

Proteins: enzymes

Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Catalytically perfect enzyme Coenzyme Cofactor Enzyme catalysis Enzyme kinetics Lineweaver–Burk plot Michaelis–Menten kinetics

Regulation	Allosteric regulation Cooperativity Enzyme inhibitor

Classification	EC number Enzyme superfamily Enzyme family List of enzymes

Types	EC1 Oxidoreductases(list) EC2 Transferases(list) EC3 Hydrolases(list) EC4 Lyases(list) EC5 Isomerases(list) EC6 Ligases(list)

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