Immunogen: Synthetic 15 amino acid peptide from 2nd cytoplasmic domain of human GPR1. Percent identity with other species by BLAST analysis: Human, Gorilla, Gibbon, Monkey (100%); Hamster, Dog, Rabbit (93%); Marmoset, Mouse, Rat, Elephant, Panda (87%); Bovine, Horse, Pig, Opossum (80%).