Files in this Data Supplement:

• Fig. S1 - Dot blot analysis of Polyclonal antibody against H3 dimethyl K9 (Upstate; 07-212) and monoclonal antibody against H3 trimethyl K27. PDF file, 46K.
• Fig. S2 - Peptide competitions for H3 di-meK9 and H3 di/tri-meK27 in differentiating female ES cells (day 3). PDF file, 2.5MB.
• Fig. S3 - Histone H3 dimethylation at lysine9 and di/trimethylation at lysine27 in undifferentiated male ES cells mutant for G9a (G9a-1-) and G9a1 cells carrying a G9a transgene (G9a1Tg). PDF file, 1.47MB.