Enables prostaglandin E receptor activity. Involved in positive regulation of gastric mucosal blood circulation. Predicted to be integral component of membrane. Predicted to be active in plasma membrane. Human ortholog(s) of this gene implicated in asthma, nasal polyps, and aspirin intolerance. Orthologous to human PTGER2 (prostaglandin E receptor 2). [provided by Alliance of Genome Resources, Apr 2022]