Molecular control of delta-opioid receptor signalling.
Fenalti, G., Giguere, P.M., Katritch, V., Huang, X.P., Thompson, A.A., Cherezov, V., Roth, B.L., Stevens, R.C.(2014) Nature 506: 191-196
- PubMed: 24413399 
- DOI: 10.1038/nature12944
- Primary Citation of Related Structures:  
4N6H - PubMed Abstract: 
Opioids represent widely prescribed and abused medications, although their signal transduction mechanisms are not well understood. Here we present the 1.8 Å high-resolution crystal structure of the human δ-opioid receptor (δ-OR), revealing the presence and fundamental role of a sodium ion in mediating allosteric control of receptor functional selectivity and constitutive activity ...