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. 1994 Jan 15;13(2):435–445. doi: 10.1002/j.1460-2075.1994.tb06278.x

A TATA sequence-dependent transcriptional repressor activity associated with mammalian transcription factor IIA.

T Aso 1, H Serizawa 1, R C Conaway 1, J W Conaway 1
PMCID: PMC394826  PMID: 8313889

Abstract

In the process of characterizing cellular proteins that modulate basal transcription by RNA polymerase II, we identified a novel repressor activity specific for promoters containing consensus TATA boxes. This activity strongly represses TATA-binding protein (TBP)-dependent transcription initiation from core promoter elements containing a consensus TATA sequence, but activates TBP-dependent transcription from core promoter elements lacking a consensus TATA sequence. Purification of this activity to near homogeneity from rat liver nuclear extracts led to the surprising discovery that it co-purifies closely with mammalian transcription factor IIA (TFIIA). The close association of TATA sequence-dependent transcriptional repressor activity with TFIIA adds a new and unexpected dimension to the already complex picture of this factor's function in transcription by RNA polymerase II.

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Selected References

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