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|Title:||A novel prothrombin activator from the venom of Micropechis ikaheka: Isolation and characterization|
|Authors:||Gao, R. |
|Citation:||Gao, R., Kini, R.M., Gopalakrishnakone, P. (2002). A novel prothrombin activator from the venom of Micropechis ikaheka: Isolation and characterization. Archives of Biochemistry and Biophysics 408 (1) : 87-92. ScholarBank@NUS Repository.|
|Abstract:||A novel prothrombin activator, Mikarin, has been isolated from Micropechis ikaheka venom. It is a single polypeptide chain metalloproteinase with the apparent molecular weight of 47 kDa. Mikarin exhibits Ca2+-independent prothrombin activation, but no effects on other blood coagulation factors, such as factor X and fibrinogen. Mikarin is the first member of group I prothrombin activators from elapid venom. Like other high-molecular-weight snake venom proteinases, it has three structural domains, metalloproteinase and disintegrin-like and Cys-rich domains, and belongs to the P-III class of snake venom metalloproteinases. The N-terminal of Mikarin exhibits 76% sequence identity with Cobrin, a metalloproteinase identified from Naja naja venom, but very lower identities were found when compared with those from viperid and crotalid venom. In addition, the presence of disintegrin-like and Cys-rich domains in snake venom metalloproteinases with diverse biological activities suggests that these domains may be important for their function. © 2002 Elsevier Science Ltd. All rights reserved.|
|Source Title:||Archives of Biochemistry and Biophysics|
|Appears in Collections:||Staff Publications|
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