Wiktionary
melittin
n. A toxic peptide that is the main component of the venom of honey bees
Wikipedia
Melittin
Melittin is the principal active component of apitoxin (bee venom) and is a powerful stimulator of phospholipase A2. Melittin is a peptide consisting of 26 amino acids with the sequence GIGAVLKVLTTGLPALISWIKRKRQQ.