Immunogen sequence: LNQSQAQMYL RPQLGNLLQV NRTLGRNVPL ASQLILMPNG AVAAVQQEVP SAQSPGVHAD ADQVQNLAVR NQQASAQGPQ MQGS Highest antigen sequence identity to the following orthologs: Mouse - 98%, Rat - 96%. Polycomb group (PcG) proteins assemble into multimeric