Abstract
Thalassophryne nattereri, known as niquim, is a venomous fish from Brazil that has caused serious medical accidents. Studies by our group have identified a new family of proteins in the venom of this fish, the Natterins, with kininogenic activity and capable of reproducing symptoms of human poisoning in mice. In 2021, the Natterina family grew, incorporating 331 species that encode 859 na…