Class A/1 (Rhodopsin-like receptors)
Jacoby E, Bouhelal R, Gerspacher M, Seuwen K. The 7 TM G-protein-coupled receptor target family. ChemMedChem. 2006 Aug;1(8):761–82. doi: 10.1002/cmdc.200600134. PMID: 16902930.; Joost P, Methner A. Phylogenetic analysis of 277 human G-protein-coupled receptors as a tool for the prediction of orphan receptor ligands. Genome Biology. 2002 Oct 17;3(11):research0063.1. doi: 10.1186/gb-2002-3-11-research0063.