• WordNet 3.6
    • n saxitoxin a powerful neurotoxin produced by certain dinoflagellates found in red tides; it can accumulate in mollusks that feed on the dinoflagellates and cause food poisoning to humans
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In news:

Saxitoxin blocks batrachotoxin-modified sodium channels in the node of Ranvier in a voltage-dependent manner.
Differences in Saxitoxin and Tetrodotoxin Binding Revealed b.
Competitive binding interaction between Zn2+ and saxitoxin in cardiac Na+ channels.
Evidence for a sulfhydryl group in the Zn2+/ saxitoxin binding site.