Immunogen sequence: ICWFSQRAGW TVFAESQISL SCSLCLHSGD QEAQNPNLVS QLCGVFLQNE TNETIHMQMS MAVGQQALPL NIIA Highest antigen sequence identity to the following orthologs: Mouse - 25%, Rat - 23%. The proto-oncogene MAS1 is a G protein-coupled receptor located on