LPAR4 encodes the human gene, Lysophosphatidic acid receptor 4. It may also be known as: LPA receptor 4; LPA-4; G-protein coupled receptor 23; P2Y purinoceptor 9; P2Y9; P2Y5-like receptor; Purinergic receptor 9; GPR23; LPA4; P2RY9; P2Y5-LIKE. The encoded protein has an amino acid length of 370 and a mass of 41.9 kDa. LPAR4 is a member of the G-protein coupled receptor 1 family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Zebrafish, Frog, Chicken.