... However, the method used by these authors, i.e. the fusion of the receptor to a fluorescent protein, may have affected the conformation of these receptors. Indeed agonistdose–response curves for the ... b2-adrenoceptor [3,4], the chemokinereceptor CCR5 [5,6], the M3muscarinic acetylcholinereceptor [7], the M2muscarinic cholinergic receptor [8], the melatonin MT1and MT2receptors [9], the V2vasopressin ... D2Long(D2L)andD2Short(D2S) dopamine receptorisoforms were modified at their N-terminus by the addition of a human immunodeficiency virus (HIV) or a FLAGepitope tag. The receptors were then expressed in Spodop-tera...