Immunogen sequence: GVLSSSQNGP PKSTSQTQSL TICHNKTTVT SSKISQRDPS PESNKKGESP SLESRSTAVT RTSSIHQLIA PASYSPIQPH SLIKHQQIPL HSPPSKVSHH Q Highest antigen sequence identity to the following orthologs: Mouse - 93%, Rat - 94%. Component of a Polycomb group (PcG)