Crystal structure of the ligand-free G-protein-coupled receptor opsin
Park, J.H., Scheerer, P., Hofmann, K.P., Choe, H.-W., Ernst, O.P.(2008) Nature 454: 183-187
- PubMed: 18563085 
- DOI: 10.1038/nature07063
- Primary Citation of Related Structures:  
3CAP - PubMed Abstract: 
In the G-protein-coupled receptor (GPCR) rhodopsin, the inactivating ligand 11-cis-retinal is bound in the seven-transmembrane helix (TM) bundle and is cis/trans isomerized by light to form active metarhodopsin II. With metarhodopsin II decay, all-trans-retinal is released, and opsin is reloaded with new 11-cis-retinal ...