>sp|A9XE59|KBX12_MESEU Potassium channel toxin MeuTXK-beta-2 OS=Mesobuthus eupeus MQRNLVVLLFLGMVALSSCGFREKHFQRFVKYAVPESTLRTVLQTVVHKVGKTQFGCSAY QGYCDDHCQDIEKKEGFCHGFKCKCGIPMGF