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J Mol Biol. 2001 Nov 30;314(3):335-52.

Regulated assembly of transcription factors and control of transcription initiation.

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  • Department of Chemistry & Biochemistry, University of Maryland, MD 20472, USA. db248@umail.umd.edu


Proteins that function in regulation of transcription initiation are typically homo or hetero-oligomeric. Results of recent biophysical studies of transcription regulators indicate that the assembly of these proteins is often subject to regulation. This regulation of assembly dictates the frequency of transcription initiation via its influence on the affinity of a transcription regulator for DNA and its affect on target site selection. Factors that modulate transcription factor assembly include binding of small molecules, post-translational modification, DNA binding and interactions with other proteins. Here, the results of recent structural and/or thermodynamic studies of a number of transcription regulators that are subject to regulated assembly are reviewed. The accumulated data indicate that this phenomenon is ubiquitous and that mechanisms utilized in eukaryotes and prokaryotes share common features.

Copyright 2001 Academic Press.

[PubMed - indexed for MEDLINE]
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