Control of gene expression by modulated self-assembly

Details Control of gene expression by modulated self-assembly Control of gene expression by modulated self-assembly

2011-05-25

arxiv.org/abs/1105.5063v1

Biology

Quantitative Biology

Molecular Networks

Nucleic Acids Research, (2011); Published version available at http://nar.oxfordjournals.org/content/early/2011/05/20/nar.gkr2

Scientific paper

10.1093/nar/gkr272

Numerous transcription factors self-assemble into different order oligomeric species in a way that is actively regulated by the cell. Until now, no general functional role has been identified for this widespread process. Here we capture the effects of modulated self-assembly in gene expression with a novel quantitative framework. We show that this mechanism provides precision and flexibility, two seemingly antagonistic properties, to the sensing of diverse cellular signals by systems that share common elements present in transcription factors like p53, NF-kappaB, STATs, Oct, and RXR. Applied to the nuclear hormone receptor RXR, this framework accurately reproduces a broad range of classical, previously unexplained, sets of gene expression data and corroborates the existence of a precise functional regime with flexible properties that can be controlled both at a genome-wide scale and at the individual promoter level.

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