Scutelarin

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Scutelarin (EC 3.4.21.60, taipan activator, Oxyuranus scutellatus prothrombin-activating proteinase) is an enzyme.^[1]^[2] This enzyme catalyses the following chemical reaction

Selective cleavage of Arg-Thr and Arg-Ile in prothrombin to form thrombin and two inactive fragments

This enzyme is isolated from the venom of the Taipan snake (Oxyuranus scutellatus).

References

↑ Walker, F.J., Owen, W.G. and Esmon, C.T. (1980). "Characterization of the prothrombin activator from the venom of Oxyuranus scutellatus scutellatus (taipan venom)". Biochemistry 19: 1020–1023. doi:10.1021/bi00546a029. PMID 6986908.
↑ Speijer, H., Govers-Reimslag, J.W., Zwaal, R.F. and Rosing, J. (1986). "Prothrombin activation by an activator from the venom of Oxyuranus scutellatus (taipan snake)". J. Biol. Chem. 261: 13258–13267. PMID 3531198.

External links

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

Endopeptidases: serine proteases/serine endopeptidases (EC 3.4.21)

Digestive enzymes	Enteropeptidase Trypsin Chymotrypsin Elastase Neutrophil Pancreatic

Coagulation	factors: Thrombin Factor VIIa Factor IXa Factor Xa Factor XIa Factor XIIa Kallikrein PSA KLK1 KLK2 KLK3 KLK4 KLK5 KLK6 KLK7 KLK8 KLK9 KLK10 KLK11 KLK12 KLK13 KLK14 KLK15 fibrinolysis: Plasmin Plasminogen activator Tissue plasminogen activator Urinary plasminogen activator

Complement system	Factor B Factor D Factor I MASP MASP1 MASP2 C3-convertase

Other immune system	Chymase Granzyme Tryptase Proteinase 3/Myeloblastin

Venombin	Ancrod Batroxobin

Other	Acrosin Prolyl endopeptidase Pronase Proprotein convertases 1 2 Prostasin Reelin Subtilisin/Furin Streptokinase S1P Cathepsin A G

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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