Cited by 190Gene Regulatory Network AnalysisFungal and yeast genetics researchBacterial Genetics and Biotechnology

Cellular Noise Regulons Underlie Fluctuations in Saccharomyces cerevisiae

Open access
Stewart-Ornstein, Jacob, Weissman, Jonathan S., El-Samad, Hana·2012·Molecular Cell

Abstract

Stochasticity is a hallmark of cellular processes, and different classes of genes show large differences in their cell-to-cell variability (noise). To decipher the sources and consequences of this noise, we systematically measured pairwise correlations between large numbers of genes, including those with high variability. We find that there is substantial pathway variability shared across similarly regulated genes. This induces quantitative correlations in the expression of functionally related genes such as those involved in the Msn2/4 stress response pathway, amino-acid biosynthesis, and mitochondrial maintenance. Bioinformatic analyses and genetic perturbations suggest that fluctuations in PKA and Tor signaling contribute to pathway-specific variability. Our results argue that a limited number of well-delineated "noise regulons" operate across a yeast cell and that such coordinated fluctuations enable a stochastic but coherent induction of functionally related genes. Finally, we show that pathway noise is a quantitative tool for exploring pathway features and regulatory relationships in un-stimulated systems.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1016/j.molcel.2011.11.035

Cites

48 of 48 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Allele-intrinsic variation is due to stochastic factors intrinsic to the molecular mechanisms that control gene expression.

    “The second is allele-intrinsic variation, namely stochastic factors intrinsic to the molecular mechanisms that control gene expression40–42.”
  • Several studies have analyzed the covariation structure between transcripts or proteins across single cells to infer regulatory relations.

    “Leveraging this insight, several studies have analyzed the covariation structure between transcripts or proteins across single cells to infer regulatory relations1–3,41,135,137,168–172.”
  • Correlating the expression profiles of genes or proteins opens the way to elucidating the regulatory mechanisms that control them.

    “In analogy to simple observational approaches for inferring gene regulation, correlating the expression profiles of genes or proteins opens the way to elucidating the regulatory mechanisms that control them2,3,41,169,170.”
  • Because of both stochastic and regulated differences between cells, each cell forms its own 'perturbation system', in which multiple regulators are subtly or more strongly perturbed, possibly reducing the need for additional experimental perturbations.

    “Second, because of both stochastic and regulated differences between the cells, each cell forms its own ‘perturbation system’, in which multiple regulators are subtly, or more strongly, perturbed, possibly reducing the need for additional experimental perturbations3,41.”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Stewart-Ornstein, J., Weissman, J. S., & El-Samad, H.
Affiliations
QB3 (US)
Corresponding author
Weissman, Jonathan S.
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2012-02
Volume
45
Issue
4
Pages
483-493
ISSN
1097-2765 (ISSN-L)
OpenAlex
W2018864252
Cited by
177
References
46
Citations by year
2026: 4 · 2025: 11 · 2024: 20 · 2023: 6 · 2022: 11 · 2021: 8 · 2020: 5 · 2019: 10 · 2018: 10 · 2017: 17 · 2016: 9 · 2015: 20 · 2014: 17 · 2013: 20 · 2012: 8
FWCI
8.36
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • University of California, San Francisco
  • National Institute of General Medical Sciences (P50GM081879)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gene Regulatory Network Analysis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
Keywords
stochastic gene expression, Saccharomyces cerevisiae, gene expression correlation, amino acid biosynthesis, mitochondrial maintenance, PKA signaling, TOR signaling, stochastic gene regulation, cell-to-cell variability
MeSH terms
Luminescent Proteins, Promoter Regions, Genetic, Saccharomyces cerevisiae, Stochastic Processes, Stress, Physiological, Signal Transduction, Gene Expression Regulation, Fungal, Protein Serine-Threonine Kinases, Cyclic AMP-Dependent Protein Kinases, Regulon, Computational Biology, Saccharomyces cerevisiae Proteins, Gene Regulatory Networks

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review