Partenaires

CNRS


Rechercher


Accueil > Publications > Recherche par années > Années 1990 > 1990

Loret, EP ; Sampieri, F ; Roussel, A ; Granier, C ; Rochat, H

Conformational flexibility of a scorpion toxin active on mammals and insects : a circular dichroism study

Proteins 8 164-172

par Administrateur - publié le

Abstract :

Three scorpion toxins have been analyzed by circular dichroism in water and in 2,2,2-trifluoroethanol (TFE) solutions. These toxins were chosen because they are representative of three kinds of pharmacological activities : (1) toxin AaH IT2, an antiinsect toxin purified from the venom of Androctonus australis Hector, which is able to bind to insect nervous system preparation, (2) toxin Css II, from the venom of Centruroides suffusus suffusus, which is a ß-type antimammal toxin capable of binding to mammal nervous system preparation, and (3) the toxin Ts VII from the venom of Tityus serrulatus, which is able to bind to both types of nervous systems.