GRM3 is a symbol for the gene, Glutamate receptor, metabotropic 3, in humans. Other names include: Metabotropic glutamate receptor 3; mGluR3; GLUR3; GPRC1C; mGlu3. The encoded protein has an amino acid length of 879 and a mass of 98.9 kDa. Other isoforms may exist. GRM3 is a member of the G-protein coupled receptor 3 family. This gene shares homology with other species, including: Mouse, Rat, Zebrafish, Frog, Chicken.