<unk>  is an 18 amino acid globular peptide neurotoxin found in apitoxin (bee venom). Dry bee venom consists of 2–3% of<unk> .<unk>  selectively blocks SK channels, a type of Ca2+-activated K+ channel expressed in the central nervous system. Toxicity is caused by only a few amino acids, in particular cysteine1, lysine4, arginine13, arginine14 and histidine18. These amino acids are involved in the binding of<unk>  to the Ca2+-activated K+ channel. Due to its specificity for SK channels,<unk>  is used as a drug in biomedical research to study the electrical properties of SK channels and their role in the afterhyperpolarizations occurring immediately following an action potential.
Apamin
Tetraspanin
Peripherin
Clathrin
Embelin
Internexin
Dystrophin
Equilin