Crotalus durissus terrificus crotapotin naturally displays preferred positions for amino acid substitutions

Conclusion It was possible to observe that the Cdt crotapotin displays a preferred amino acid substitution pattern present in the α chain, at positions 31 and 40. Moreover, substitutions could also be observed in β and γ chains (one for each). The combinations of these four different peptides, with the already described chains, would produce ten different crotapotins, which is compatible to our previous observations for the Cdt venom.
Source: Journal of Venomous Animals and Toxins including Tropical Diseases - Category: Tropical Medicine Source Type: research