Abstract

The crude venom of the stonefish ( Synanceia verrucosa) possesses numerous enzymatic properties (hyaluronidase, eight esterases and ten aminopeptidases). Verrucotoxin was isolated by DEAE and hydroxyapatite chromatography, followed by FPLC † † FPLC: registered by Pharmacia. gel filtration on Superdex 200 HR 10/30. It was found to be a glycoprotein with a mol. wt of 322,000 ± 2000, comprising four subunits, 2α (83,000) and 2β (78,000). Verrucotoxin, as the crude venom, is lethal for mice, haemolyses washed rabbit erythrocytes and induces a fall in arterial pressure in anaesthetized rats.

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