Background
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μ-Conotoxin PIIIA has been isolated from the venom of the cone Conus purpurascens. μ-Conotoxins bind and block site 1 of voltage-gated sodium channels. This toxin blocks the neuronal sodium channels Nav1.2 (SCN2A) and Nav1.7 (SCN9A). The peptide causes flaccid paralysis in both mice and fish.
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