Additional file 1.

Western blots of whole cell extracts from cell lines expressing FLAG-Brd4, FLAG-HP1β and control cell line (empty vector). Blots were probed with anti-Brd4 (mAb Epitomics, 5716 Burlingame, CA, USA), anti-HP1β (pAb Cell Signaling Technology 2613 Danvers, MA, USA) and β-actin control (mAb Santa Cruz, sc-81178 Santa Cruz, CA, USA).

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LeRoy et al. Genome Biology 2012 13:R68   doi:10.1186/gb-2012-13-8-r68