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. Author manuscript; available in PMC: 2014 Mar 1.
Published in final edited form as: Biochim Biophys Acta. 2012 Nov 12;1829(3-4):342–360. doi: 10.1016/j.bbagrm.2012.10.014

Figure 3. Modulation of RNA Polymerase I transcription by oncogenic and tumor suppressor signaling pathways.

Figure 3

A schematic illustrating the sites of action where signaling molecules regulate RNA polymerase I in a positive (blue) or negative (red) fashion. UBF: upstream binding factor; SL-1: selectivity factor 1; Pol I: RNA polymerase I; TTF-1: termination transcription factor 1; UCE: upstream control element;