Gene network shaping of inherent noise spectra

D. W. Austin, M. S. Allen, J. M. McCollum, Roy David Dar, J. R. Wilgus, G. S. Sayler, N. F. Samatova, C. D. Cox, M. L. Simpson

Research output: Contribution to journalArticle

Abstract

Recent work demonstrates that stochastic fluctuations in molecular populations have consequences for gene regulation1-10. Previous experiments focused on noise sources or noise propagation through gene networks by measuring noise magnitudes. However, in theoretical analysis, we showed that noise frequency content is determined by the underlying gene circuits, leading to a mapping between gene circuit structure and the noise frequency range 11,12. An intriguing prediction from our previous studies was that negative autoregulation shifts noise to higher frequencies where it is more easily filtered out by gene networks11 - a property that may contribute to the prevalence of autoregulation motifs (for example, found in the regulation of ∼40% of Escherichia coli genes). Here we measure noise frequency content in growing cultures of E. coli, and verify the link between gene circuit structure and noise spectra by demonstrating the negative autoregulation-mediated spectral shift. We further demonstrate that noise spectral measurements provide mechanistic insights into gene regulation, as perturbations of gene circuit parameters are discernible in the measured noise frequency ranges. These results suggest that noise spectral measurements could facilitate the discovery of novel regulatory relationships.

Original languageEnglish (US)
Pages (from-to)608-611
Number of pages4
JournalNature
Volume439
Issue number7076
DOIs
StatePublished - Feb 2 2006
Externally publishedYes

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Gene Regulatory Networks
Noise
Homeostasis
Genes
Escherichia coli

ASJC Scopus subject areas

  • General

Cite this

Austin, D. W., Allen, M. S., McCollum, J. M., Dar, R. D., Wilgus, J. R., Sayler, G. S., ... Simpson, M. L. (2006). Gene network shaping of inherent noise spectra. Nature, 439(7076), 608-611. https://doi.org/10.1038/nature04194

Gene network shaping of inherent noise spectra. / Austin, D. W.; Allen, M. S.; McCollum, J. M.; Dar, Roy David; Wilgus, J. R.; Sayler, G. S.; Samatova, N. F.; Cox, C. D.; Simpson, M. L.

In: Nature, Vol. 439, No. 7076, 02.02.2006, p. 608-611.

Research output: Contribution to journalArticle

Austin, DW, Allen, MS, McCollum, JM, Dar, RD, Wilgus, JR, Sayler, GS, Samatova, NF, Cox, CD & Simpson, ML 2006, 'Gene network shaping of inherent noise spectra', Nature, vol. 439, no. 7076, pp. 608-611. https://doi.org/10.1038/nature04194
Austin DW, Allen MS, McCollum JM, Dar RD, Wilgus JR, Sayler GS et al. Gene network shaping of inherent noise spectra. Nature. 2006 Feb 2;439(7076):608-611. https://doi.org/10.1038/nature04194
Austin, D. W. ; Allen, M. S. ; McCollum, J. M. ; Dar, Roy David ; Wilgus, J. R. ; Sayler, G. S. ; Samatova, N. F. ; Cox, C. D. ; Simpson, M. L. / Gene network shaping of inherent noise spectra. In: Nature. 2006 ; Vol. 439, No. 7076. pp. 608-611.
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