| 1 | G2A, GPR12, GPR18, GPR23, GPR3, GPR55, GPR6, GPR63, GPR92 |
| Lipid G protein-coupled receptor ligand identification using beta-arrestin PathHunter assay. | |
| Yin H, Chu A, Li W, Wang B, Shelton F, Otero F, Nguyen DG, Caldwell JS, Chen YA. | |
| J Biol Chem 284(18):12328-38. Epub 2009 Mar 13.PMID: 19286662 2009 | |
| 2 | GPR20, GPR21, GPR22, GPR23 |
| Cloning and chromosomal mapping of four putative novel human G-protein-coupled receptor genes. | |
| O'Dowd BF, et al. | |
| Gene 187 : 75-81. 1997 | |