(D) Schematic diagram of four GST-EZH2 recombinant proteins (EZ1 to EZ4). EBD, EED binding domain; SANT1(/2) L, "Swi3, Ada2, N-Cor, TFIIIB"1(/2) like; MCSS, motif connecting SANT1L and SANT2L; CXC, cysteine-rich domain; SET, catalytic domain. 