1) Ion channel toxin 
Ergtoxin is a family of toxins that can be isolated from the venom of several members of the Mexican scorpion genus of Centruroides. These toxins target hERG (human Ether- à -go-go-Related Gene) potassium channels. ==Sources== The toxin is derived from venomous glands of the Mexican scorpions Centruroides Noxius Hoffmann, Centruroides elegans, Ce...