Abstract
In the venom of Thalassophryne nattereri a new family of proteins named Natterin was identified, which was expanded by the inclusion of new members reaching a total of 331 species that present 859 natterin or natterin-like genes. The natterin-like genes do not have orthologs described in mammals, but in fish. Among the 109 species of fish that have one or more natterin-like genes, the zeb…