- G Protein Coupled Receptor 55 (GPR55)
 - G Protein Coupled Receptor 56 (GPR56)
 - G Protein Coupled Receptor 61 (GPR61)
 - G Protein Coupled Receptor 62 (GPR62)
 - G Protein Coupled Receptor 63 (GPR63)
 - G Protein Coupled Receptor 64 (GPR64)
 - G Protein Coupled Receptor 65 (GPR65)
 - G Protein Coupled Receptor 68 (GPR68)
 - G Protein Coupled Receptor 77 (GPR77)
 - G Protein Coupled Receptor 78 (GPR78)
 - G Protein Coupled Receptor 75 (GPR75)
 - G Protein Coupled Receptor 98 (GPR98)
 - G Protein Coupled Receptor 81 (GPR81)
 - G Protein Coupled Receptor 82 (GPR82)
 - G Protein Coupled Receptor 83 (GPR83)