The 1.1 A crystal structure of the neuronal acetylcholine receptor antagonist, alpha-conotoxin PnIA from Conus pennaceus.
Hu, S.H., Gehrmann, J., Guddat, L.W., Alewood, P.F., Craik, D.J., Martin, J.L.(1996) Structure 4: 417-423
- PubMed: 8740364 
- DOI: https://doi.org/10.1016/s0969-2126(96)00047-0
- Primary Citation of Related Structures:  
1PEN - PubMed Abstract: 
alpha-Conotoxins are peptide toxins, isolated from Conus snails, that block the nicotinic acetylcholine receptor (nAChR). The 16-residue peptides PnIA and PnIB from Conus pennaceus incorporate the same disulfide framework as other alpha-conotoxins but differ in function from most alpha-conotoxins by blocking the neuronal nAChR, rather than the skeletal muscle subtype. The crystal structure determination of PnIA was undertaken to identify structural and surface features that might be important for biological activity.
Organizational Affiliation: 
Centre for Drug Design and Development, University of Queensland, St Lucia, Australia.