2GX1:
reference: Solution Structure and Alanine Scan of a Spider Toxin That Affects the Activation of Mammalian Voltage-gated Sodium Channels., Corzo G, Sabo JK, Bosmans F, Billen B, Villegas E, Tytgat J, Norton RS, J Biol Chem. 2007 Feb 16;282(7):4643-52. Epub 2006 Dec 5. PMID: 17148449

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