in order to study the importance of arginine residues 13 and 14 in apamin , the bee venom neurotoxin , four analogues , [ lys13 ] -apamin , [ lys14 ] -apamin , [ har4 , har13 ] -apamin and [ har4 , har14 ] -apamin were synthesized and tested with respect to their neurotoxicity .
C0004920
bee venom
C0003521
apamin