Immunogen sequence: KRHDSDKEEK GRKEPKGLKT LKEIRNAFDL FKLTPEEKND VSENNRKREE IPLDFKTIDD HKTKENKQSL KERRNTRDET DTWAYIAAEG DQEVLDSVCQ ADENSDGR Highest antigen sequence identity to the following orthologs: Mouse - 79%, Rat - 77%. Heterochromatin component tha