Nav1.4 Channel (IMAGE) Lomonosov Moscow State University Caption This is the complex of the Nav1.4 channel from human muscle cells with the Hm-3 toxin extracted from the venom of the Heriaeus melloteei spider. (A) The interaction of Hm-3 (blue/purple) with the first voltage-sensing domain (D1) of the channel (sandy/red) revealed by NMR data. Lateral view from the lipid bilayer. (B) The toxin-channel complex. View of the membrane plane from the extracellular space. Credit Alexander Vasilevskiy Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.