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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Molecular cloning and functional analysis of Drosophila TAF110 reveal properties expected of coactivators.

The general transcription factor TFIID is a multiprotein complex containing the TATA-binding protein and several associated factors (TAFs), some of which may function as coactivators that are essential for activated, but not basal, transcription. Here we describe the isolation and characterization of the first gene encoding a TAF protein. The deduced amino acid sequence of TAF110 revealed the presence of several glutamine- and serine/threonine-rich regions reminiscent of the protein-protein interaction domains of the regulatory transcription factor Sp1 that are involved in transcription activation and multimerization. In both Drosophila cells and yeast, TAF110 specifically interacts with the glutamine-rich activation domains of Sp1. Moreover, purified Sp1 selectively binds recombinant TAF110 in vitro. These findings taken together suggest that TAF110 may function as a coactivator by serving as a site of protein-protein contact between activators like Sp1 and the TFIID complex.[1]


  1. Molecular cloning and functional analysis of Drosophila TAF110 reveal properties expected of coactivators. Hoey, T., Weinzierl, R.O., Gill, G., Chen, J.L., Dynlacht, B.D., Tjian, R. Cell (1993) [Pubmed]
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