Immunogen sequence: FLPNTLPKEGL ETNADIIKNE NEDKQKEEVK KEKYGITKDF LPFMKSLSCN Highest antigen sequence identity to the following orthologs - mouse 65%, rat 63%. The organic anion transporting polypeptides, OATP-A (also designated OATP1, OATP1A2 and SLC21A3