basic FUNCTION
| template activating factor I |
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binding to the core promoter of ribosomal RNA genes to position the polymerase properly and acting as a channel for regulatory signals |
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assembly of TBP and associated factors (TAFs), essential for preinitiation complex formation at ribosomal RNA gene promoters  |
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essential for Pol I recruitment to the ribosomal RNA gene promoter, also has an essential postpolymerase recruitment role  |
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GTF2B-like factor, having a key function in Pol I transcription  |
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initiation of transcription for ribosomal RNA (rRNA) by RNA polymerase I requires TBP and TBP-associated factors (TAF1A, TAF1B and TAF1C)  |