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  • Title: The interaction of sea anemone and scorpion neurotoxins with tetrodotoxin-resistant Na+ channels in rat myoblasts. A comparison with Na+ channels in other excitable and non-excitable cells.
    Author: Frelin C, Vigne P, Schweitz H, Lazdunski M.
    Journal: Mol Pharmacol; 1984 Jul; 26(1):70-4. PubMed ID: 6146926.
    Abstract:
    The properties of interactions of several polypeptide neurotoxins isolated from sea anemone and scorpion venom with Na+ channels of rat myoblasts, chick myotubes, neuroblastoma cells, and fibroblasts have been compared. Tetrodotoxin (TTX)-resistant Na+ channels appear to be much more sensitive to the action of sea anemone toxins than TTX-sensitive Na+ channels but have the same affinity for scorpion neurotoxins. This conclusion holds both for Na+ channels that can be activated electrically and for silent forms of Na+ channels. The sensitivity to sea anemone toxins of the different types of Na+ channels that have been studied suggests the existence of multiple forms of Na+ channels.
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