<unk>  is a member of the birtoxin family of peptide neurotoxins that target sodium channels. Although identified as a long chain neurotoxin, which usually have 64-70 residues with four disulfide bridges,<unk> , like birtoxin, has a smaller size (58 residues) with only three disulfide bridges.<unk>  differs from birtoxin by a single amino acid: from glycine to glutamic acid at position 23, consistent with an apparent mass difference of 72 Da between the two peptides.
Ikitoxin
Saxitoxin
Agitoxin
Kaliotoxin
Bungarotoxin
Dortoxin
Presepsin
Charybdotoxin