More GPCR structures...
Some more structures of a GPCR are available - for the Adenosine A2A receptor complexed to the endogenous ligand adenosine (PDBe:2YDO), and also a further complex with the adenosine analogue NECA (N-ethyl-5'-carboxyamido adenosine) (PDB:2YDV). These structures add significantly to our understanding of the mechanism and structural aspects of agonist signalling.
adenosine
%T Agonist-bound adenosine A2A receptor structures reveal common features of GPCR activation %A G. Lebon %A T. Warne %A P.C. Edwards %A K. Bennett %A C.J. Langmead %A A.G.W. Leslie %A C.G. Tate %J Nature %D 2011 %O doi:10.1038/nature10136
Update: I've also updated the joy annotated alignment with the new structures (and fixed the ordering to something more usable).