>sp|P00987|VKTH1_BUNMU Kunitz-type serine protease inhibitor homolog beta-bungarotoxin B1 chain, major component OS=Bungarus multicinctus MSSGGLLLLLGLLTLCAELIPVSSRQRHRDCDKPPDKGNCGPVRRAFYYDTRLKTCKAFQ YRGCNGNGNHFKTETLCRCECLVYP