Figure 6.

To date, all Micrurus venoms contain 3FTxs with significant similarities to muscarinic toxins from Dendroaspis angusticeps venom; however, these toxins also display numerous differences. It seems unlikely that these toxins could exhibit the same pharmacology in mammals as the mamba toxins, but they may antagonize mAChRs in reptiles, fishes, and onychophorans, the natural prey of coralsnakes. Aligned sequences of mamba muscarinic antagonists and putative muscarinic toxins from Micrurus venoms. Signal peptides are shown to the left of the black vertical line.