Solution structure of the sodium channel antagonist conotoxin GS: a new molecular caliper for probing sodium channel geometry.
Hill, J.M., Alewood, P.F., Craik, D.J.(1997) Structure 5: 571-583
- PubMed: 9115446 
- DOI: 10.1016/s0969-2126(97)00212-8
- Primary Citation of Related Structures:  
1AG7 - PubMed Abstract: 
The venoms of Conus snails contain small, disulfide-rich inhibitors of voltage-dependent sodium channels. Conotoxin GS is a 34-residue polypeptide isolated from Conus geographus that interacts with the extracellular entrance of skeletal muscle sodium channels to prevent sodium ion conduction ...