Presented below are ELISA kits for measuring OTR, another term for Oxytocin receptor. In humans this protein is encoded by the gene, OXTR. It has a reported sequence size of 389 amino acids and a mass of 42.8 kilodaltons. It has been designated as a membrane protein and a member of the G-protein coupled receptor 1 family, Vasopressin/oxytocin receptor subfamily. Orthologs have been observed in other species, including: Mouse, Rat, Zebrafish, Frog, Chicken.