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Fig. 7. Schematic representation of the interaction between Ring1A/B and the
core transcriptional regulatory circuitry in mouse ES cells.
Ring1A/B-mediated PcG silencing functions downstream of the core
transcriptional regulatory circuitry including Oct3/4. Developmental cues,
such as Gata6 activation, downregulate the activity of the core
transcriptional regulatory circuitry, which accompanies a global decrease in
PcG silencing.