RNA polymerase I transcription regulator complex RNA polymerase I core factor complex A RNA polymerase I-specific transcription factor complex that is required for the transcription of rDNA by RNA polymerase I. In yeast the complex consists of Rrn6p, Rrn7p, and Rrn11p. GO:0070860 Note that, although this complex can be considered analogous to the mammalian transcription factor SL complex, the core factor complex does not include TBP, whereas SL1 does. mah cellular_component 2009-08-14T05:00:44Z