Timeline of availability for individual representative GPCR crystal structure structures including protein fusion partners. Rho (1F88), ADRB2 (2R4R), ADRB1 (2VT4), A2AR (3EML), TACR1 (2KS9), CXCR4 (3ODU), D3R (3PBL), H1R (3RZE), S1P1 (3V2W), M2R (3UON), CXCR1 (2LNL), M3R (4DAJ), κ-OR (4DJH), μ-OR (4DKL), NOP (4EA3), δ-OR (4EJ4), PAR1 (3VW7), NSTR1 (3ZEV), 5-HT1B (4IAQ), 5-HT2B (4IB4), SMO (4JKV), CRF1R (4K5Y), CCR5 (4MBS) P2Y12 (4NTJ), mGlu5 (4OO9), mGlu1 (4OR2), FFAR1 (4PHU), OX2 (4S0V), P2Y1 (4XNW), HHV-5 US28 (4XT1), AT1R (4YAY), LPA1 (4Z34), OX1 (4ZJ8), M1R (5CXV), M4R (5DSG), GCGR (5EE7), CCR9 (5LWE), ET-B (5GLH), CCR2 (5T1A), CB1 (5TGZ), A1AR (5UEN), AT2R (5UNF).