>sp|Q75S50|VKTH3_BUNCA Kunitz-type serine protease inhibitor homolog beta-bungarotoxin B3 chain OS=Bungarus candidus MSSGGLLLLLGLLTLWAELTPVSSRKRHPDCDKPPDTRICQTVVRAFYYKPSEKRCVQFR YGGCKGNGNHFKSDHLCRCECLEYR