The structure of the toxin is unique because it is made up of two anti-parallel helices linked by two disulfide bridges without β- sheets. The κ-<unk> 1 consists of 22 residues and with an amidated C terminus and is the shortest scorpion toxin reported so far. The κ-<unk> 2 is built up of 23 residues with free C-terminus.
Hefutoxin
Aflatoxin
Bukatoxin
Psalmotoxin
Phoratoxin
Agitoxin
Vanillotoxin
Phoneutria nigriventer toxin-3