Immunogen sequence: TSASTKVGEI FSAAGAAFTK LGELTMQLHP VADSSPAGAK WTETEIEMLR AAVKRFGDDL NHISCVIKER TVAQIKATVK RKVYEDSGI Highest antigen sequence identity to the following orthologs: Mouse - 98%, Rat - 98%. Component of chromatin complexes such as the MLL1/