Mu-segestritoxin-Sf1a

UniProtKB accession:  P61095

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UniProtKB description:  Insecticidal toxin (PubMed:11689233). It inhibits insect voltage-gated sodium channels (Nav) by partially blocking the channel pore (1 uM inhibits 55.7% sodium current in DUM neurons from the American cockroach), not by acting as a gating modifier (PubMed:25559770). The inhibition is only partially reversible (about 25% recovery) after prolonged washout (PubMed:25559770). In vivo, the toxin causes flaccid paralysis followed by death when injected into Heliothis virescens larvae (PubMed:11689233). It also causes uncoordinated movements followed by full paralysis to sheep blowflies (Lucilia cuprina) (PubMed:25559770).