Injections of 20 uM of this synthetic peptide (Ile) causes partial paralysis to polychaete worms (Nereis virens), the natural prey of terebrid snails (PubMed:24713808). This paralysis may be due to an inhibition of nicotinic receptors at the neuromuscular junction (Probable). Expressed by the salivary gland. This peptide is considered as a venom peptide. The cysteine framework is III (CC-C-C-CC). Classified in the M-3 branch, since 3 residues stand between the fourth and the fifth cysteine residues. This peptide has a cysteine scaffold similar to the M superfamily of conotoxins, but it displays a disulfide pattern previously unknown in native cone snail peptides. It is unsure whether the 3rd residue is an Ile or a Leu. NMR structural calculations were carried out using only the Ile-3 form of the peptide.