A planar heterocyclic DNA intercalator that inhibits RNA polymerase I (Pol I), IC50 = 0.6 µM in U2OS cells, but not Pols II or III, blocking transcription elongation without inducing the DNA damage response. Inhibition disengages Pol I from chromatin, resulting in proteasome-dependent...
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A planar heterocyclic DNA intercalator that inhibits RNA polymerase I (Pol I), IC50 = 0.6 µM in U2OS cells, but not Pols II or III, blocking transcription elongation without inducing the DNA damage response. Inhibition disengages Pol I from chromatin, resulting in proteasome-dependent destruction of Pol I subunit RPA194. At nanomolar concentrations it also activates p53 in A375 cells
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