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A simple metric of promoter architecture robustly predicts expression breadth of human genes suggesting that most transcription factors are positive regulators
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2014 (English)In: Genome Biology, ISSN 1465-6906, E-ISSN 1474-760X, Vol. 15, no 7, 413- p.Article in journal (Refereed) Published
Abstract [en]

Background: Conventional wisdom holds that, owing to the dominance of features such as chromatin level control, the expression of a gene cannot be readily predicted from knowledge of promoter architecture. This is reflected, for example, in a weak or absent correlation between promoter divergence and expression divergence between paralogs. However, an inability to predict may reflect an inability to accurately measure or employment of the wrong parameters. Here we address this issue through integration of two exceptional resources: ENCODE data on transcription factor binding and the FANTOM5 high-resolution expression atlas. Results: Consistent with the notion that in eukaryotes most transcription factors are activating, the number of transcription factors binding a promoter is a strong predictor of expression breadth. In addition, evolutionarily young duplicates have fewer transcription factor binders and narrower expression. Nonetheless, we find several binders and cooperative sets that are disproportionately associated with broad expression, indicating that models more complex than simple correlations should hold more predictive power. Indeed, a machine learning approach improves fit to the data compared with a simple correlation. Machine learning could at best moderately predict tissue of expression of tissue specific genes. Conclusions: We find robust evidence that some expression parameters and paralog expression divergence are strongly predictable with knowledge of transcription factor binding repertoire. While some cooperative complexes can be identified, consistent with the notion that most eukaryotic transcription factors are activating, a simple predictor, the number of binding transcription factors found on a promoter, is a robust predictor of expression breadth.

Place, publisher, year, edition, pages
2014. Vol. 15, no 7, 413- p.
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Medical Genetics
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URN: urn:nbn:se:uu:diva-242040DOI: 10.1186/s13059-014-0413-3ISI: 000346603300009PubMedID: 25079787OAI: oai:DiVA.org:uu-242040DiVA: diva2:782157
Available from: 2015-01-20 Created: 2015-01-20 Last updated: 2017-12-05Bibliographically approved

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Huminiecki, Lukasz
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Department of Immunology, Genetics and Pathology
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