EP1 is an alias for the gene, Prostaglandin E receptor 1, in humans. Other names include: Prostaglandin E2 receptor EP1 subtype; PGE2 receptor EP1 subtype; Prostanoid EP1 receptor; PGE receptor EP1 subtype; prostaglandin E receptor 1 (subtype EP1), 42kDa. The encoded protein has an amino acid length of 402 and a mass of 41.8 kDa. EP1 is a member of the G-protein coupled receptor 1 family. This gene shares homology with other species, including: Mouse, Rat, Frog.