Immunogen sequence: PSSSTLVDEL ESSFEACFAS LVSQDYVNGT DQEEIRTGVD QCIQKFLDIA RQTECFFLQK RLQLSVQKPE QV Highest antigen sequence identity to the following orthologs: Mouse - 97%, Rat - 97%. The mediator complex is a multi-protein transcriptional co-activator