Kelly Barnett
The structural basis of agonist-induced activation in constitutively active rhodopsin : Nature : Nature Publishing Group - http://www.nature.com/nature...
Previously structures for the activated rhodopsin GPCR had been determined, however containing the opsin form that doesn't contain the trans-retinal form, the form of rhodopsin which promotes a response. Recently scientists have determined structures thought to represent the activated trans-retinal GPCR. - Kelly Barnett from Bookmarklet