Class C GPCR

The class C G-protein-coupled receptors are a class of G-protein coupled receptors that include the metabotropic glutamate receptors  and several additional receptors.

Family C GPCRs have a large extracellular N-terminus which binds the orthosteric (endogenous) ligand. The shape of this domain is often likened to a clam. Several allosteric ligands to these receptors have been identified and these bind within the seven transmembrane region.

Calcium-sensing receptor-related

 * extracellular calcium-sensing receptor-related
 * Calcium-sensing receptor
 * GPRC6A

GABAB receptors

 * GABAB receptor (gamma-aminobutyric acid)
 * GABAB receptor 1
 * GABAB receptor 2
 * GPR156

Metabotropic glutamate receptors

 * Metabotropic glutamate receptors (mGluR)
 * mGluR1
 * mGluR2
 * mGluR3
 * mGluR4
 * mGluR5
 * mGluR6
 * mGluR7
 * mGluR8

RAIG

 * Retinoic acid-inducible orphan G protein-coupled receptors (RAIG)
 * RAIG1
 * RAIG2
 * RAIG3
 * RAIG4

Taste receptors

 * Taste receptor
 * Taste receptor, type 1, member 1
 * Taste receptor, type 1, member 2
 * Taste receptor, type 1, member 3

Orphan

 * Class C Orphan receptors
 * GPR158
 * GPR179

Other

 * Bride of sevenless protein
 * Vomeronasal receptor, type 2