Receptor sites on sodium channels
| Receptor Site | Toxin or Drug | Domains |
|---|---|---|
| Neurotoxin receptor site 1 | Tetrodotoxin | IS2–S6, IIS2–S6 |
| Saxitoxin | IIIS2–S6, IVS2–S6 | |
| μ-Conotoxin | ||
| Neurotoxin receptor site 2 | Veratridine | IS6, IVS6 |
| Batrachotoxin | ||
| Grayanotoxin | ||
| Neurotoxin receptor site 3 | α-Scorpion toxins | IS5–IS6, IVS3–S4 |
| Sea anemone toxins | IVS5–S6 | |
| Neurotoxin receptor site 4 | β-Scorpion toxins | IIS1–S2, IIS3–S4 |
| Neurotoxin receptor site 5 | Brevetoxins | IS6, IVS5 |
| Ciguatoxins | ||
| Neurotoxin receptor site 6 | δ-Conotoxins | IVS3–S4 |
| Local anesthetic receptor site | Local anesthetic drugs | IS6, IIIS6, IVS6 |
| Antiarrhythmic drugs | ||
| Antiepileptic drugs |