Class A: Rhodopsin like | | | |
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| Adenosine ( A1, A2A, A2B, A3) · P2Y ( 1, 2, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14) |
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Other | Acetylcholine ( M1, M2, M3, M4, M5) · Dopamine ( D1, D2, D3, D4, D5) · Histamine ( H1, H2, H3, H4) · Melatonin ( 1A, 1B, 1C) · TAAR ( 1, 2, 3, 5, 6, 8, 9) |
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Metabolites and signaling molecules | | |
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Other | Bile acid · Cannabinoid ( CB1, CB2, GPR ( 18, 55, 119)) · EBI2 · Estrogen · Free fatty acid ( 1, 2, 3, 4) · Lactate · Lysophosphatidic acid ( 1, 2, 3, 4, 5, 6) · Lysophospholipid ( 1, 2, 3, 4, 5, 6, 7, 8) · Niacin ( 1, 2) · Oxoglutarate · PAF · Sphingosine-1-phosphate ( 1, 2, 3, 4, 5) · Succinate |
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Peptide | | |
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Other | Anaphylatoxin ( C3a, C5a) · Angiotensin ( 1, 2) · Apelin · Bombesin ( BRS3, GRPR, NMBR) · Bradykinin ( B1, B2) · Chemokine · Cholecystokinin ( A, B) · Endothelin ( A, B) · Formyl peptide ( 1, 2, 3) · FSH · Galanin ( 1, 2, 3) · GHB receptor · Gonadotropin-releasing hormone ( 1, 2) · Ghrelin · Kisspeptin · Luteinizing hormone/choriogonadotropin · MAS ( 1, 1L, D, E, F, G, X1, X2, X3, X4) · Melanocortin ( 1, 2, 3, 4, 5) · MCHR ( 1, 2) · Motilin · Opioid ( Delta, Kappa, Mu, Nociceptin & Zeta, but not Sigma) · Orexin ( 1, 2) · Oxytocin · Prokineticin ( 1, 2) · Prolactin-releasing peptide · Relaxin ( 1, 2, 3, 4) · Somatostatin ( 1, 2, 3, 4, 5) · Tachykinin ( 1, 2, 3) · Thyrotropin · Thyrotropin-releasing hormone · Urotensin-II · Vasopressin ( 1A, 1B, 2) |
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Miscellaneous | | GPR ( 1, 3, 4, 6, 12, 15, 17, 18, 19, 20, 21, 22, 23, 25, 26, 27, 31, 32, 33, 34, 35, 37, 39, 42, 44, 45, 50, 52, 55, 61, 62, 63, 65, 68, 75, 77, 78, 81, 82, 83, 84, 85, 87, 88, 92, 101, 103, 109A, 109B, 119, 120, 132, 135, 137B, 139, 141, 142, 146, 148, 149, 150, 151, 152, 153, 160, 161, 162, 171, 173, 174, 176, 177, 182, 183) |
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Other | Adrenomedullin · Olfactory · Opsin ( 3, 4, 5, 1LW, 1MW, 1SW, RGR, RRH) · Protease-activated ( 1, 2, 3, 4) · SREB |
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