Files in this Data Supplement:

• Supplemental file 1 - Supplemental methods (chromatin preparation); Fig. S1 (Preferential association of macroH2A1 with a 31-bp direct repeat sequence), S2 to S4 (Identification of HP1Β S2, hnRNP A2/B1 S3, and ubiquitinated macroH2A1 S4 by mass spectrometry), and S5 (Western blot analysis of proteins associated with macroH2A1-containing chromatin); and Table S1 (Supplemental PCR primers)
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