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The solution structure of three toxins from the venom of different scorpions have been studied using NMR spectroscopy and molecular modeling. The three toxins, composed of 66 residues, were extracted from different scorpions, purified and their primary sequence determined including disulfide bonds. They act specifically on Na + channels of mammalians or crustaceans. Toxins of very similar...
Owing to our interest in understanding the structure-function relationship of the Na + channel-blocking peptides from scorpion venoms, we have cloned and expressed toxin Cn 5 from the Mexican scorpion Centruroides noxius Hoffmann. The amino acid sequence was determined and the complete gene (Cngt II) for this toxin was also obtained from a cDNA library. For the expression the gene was edited,...
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