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Gyroxin is a serine protease enzyme component of the South American rattlesnake (Crotalus durissus terrificus) venom. This toxin displays several activities, including the induction of blood coagulation (fibrinogenolytic activity), vasodilation and neurotoxicity, resulting in an effect called barrel rotation. The mechanisms involved in this neurotoxic activity are not well known. Because gyroxin is...
Gyroxin is one of main serine proteases of Crotalus durissus terrificus venom, representing about 2% of the protein content in the crude venom. It is a 33kDa glycoprotein with 3.8% by weight of sugar moiety. This toxin induces hemotoxicity in mice and a neurological condition called barrel rotation syndrome. In the present work, we report the molecular cloning of five new nucleotide sequences from...
Gyroxin fails to modify in vitro release of labelled dopamine and acetylcholine from rat and mouse striatal tissue. Gyroxin is a thrombin-like peptide with amidasic, esterasic and fibrinogenolitic activities, found in the venom of snakes like Lachesis muta muta and Crotalus durissus terrificus. Intravenous injections of small doses of gyroxin induce a typical barrel rotation behaviour that has been...
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