Abstract
Due to their important role in essential physiological processes such as the propagation of the nerve signal or regulation of the heartbeat, potassium channels are common targets for animal toxins. These toxins provide valuable tools for the study of ion channel function and have potential as lead compounds for drug development. Most toxins affecting potassium channels act as pore blockers, thus inhibiting potassium flow. Using a direct pull-down toxin binding assay with immobilized channel (the bacterial potassium channel KcsA) and crude Dendroaspis angusticeps venom, we identified a novel toxin binder of KcsA, which we called Tx7335.
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