Immunogen sequence: NRCLQRKMTG EPDNNRSTSV ELTGDPNKTR GAPEALMANS GEPWSPSYLG P Highest antigen sequence identity to the following orthologs: Mouse - 69%, Rat - 67%. GPR109A (also known as HCA2, HM74a, and NIACR1) is a 42kDa G-protein coupled receptor that