Evidence map›Paper›PMID 27325680›Full record

ArticleJournal of bacteriology2016

A Suppressor Mutation That Creates a Faster and More Robust σE Envelope Stress Response.

Anna Konovalova, Jaclyn A Schwalm, Thomas J Silhavy

Open access · bronzeAbstract read
In one paragraph

Article in Journal of bacteriology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
3.0field-weighted citation impact, top 9% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed, 22 citations in OpenAlex.

  1. ModelingbioRxiv : the preprint server for biology · 2025
    Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Homeostasis of the Gram-negative cell envelope.Current opinion in microbiology · 2021
    Review
  7. Review
  8. Review
  9. Fine-Tuning of σJournal of bacteriology · 2019
    Article
  10. Article
  11. Article
  12. Article
  13. Inhibitor of intramembrane protease RseP blocks the σProceedings of the National Academy of Sciences of the United States of America · 2018
    Article
  14. Outer Membrane Biogenesis.Annual review of microbiology · 2017
    Review
  15. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Anna KonovalovaDepartment of Molecular Biology, Princeton University, Princeton, New Jersey, USA.ORCID 0000-0002-2238-8849
Jaclyn A SchwalmDepartment of Molecular Biology, Princeton University, Princeton, New Jersey, USA.
Thomas J SilhavyDepartment of Molecular Biology, Princeton University, Princeton, New Jersey, USA tsilhavy@princeton.edu.
Princeton University · US

Funding

Biogenesis and maintenance of the outer membrane of Gram-negative bacteriaR35GM118024 · NIGMS · PRINCETON UNIVERSITY · PI SILHAVY, THOMAS J. · 2016 to 2025
$8.1M
NIGMS NIH HHS R35 GM118024
6 · The paper itself

Abstract

unlabelledThe σE envelope stress response is an essential signal transduction pathway which detects and removes mistargeted outer membrane (OM) β-barrel proteins (OMPs) in the periplasm of Escherichia coli It relies on σE, an alternative sigma factor encoded by the rpoE gene. Here we report a novel mutation, a nucleotide change of C to A in the third base of the second codon, which increases levels of σE (rpoE_S2R). The rpoE_S2R mutation does not lead to the induction of the stress response during normal growth but instead changes the dynamics of induction upon periplasmic stress, resulting in a faster and more robust response. This allows cells to adapt faster to the periplasmic stress, avoiding lethal accumulation of unfolded OMPs in the periplasm caused by severe defects in the OMP assembly pathway. IMPORTANCE: Survival of bacteria under conditions of external or internal stresses depends on timely induction of stress response signaling pathways to regulate expression of appropriate genes that function to maintain cellular homeostasis. Previous studies have shown that strong preinduction of envelope stress responses can allow bacteria to survive a number of lethal genetic perturbations. In our paper, we describe a unique mutation that enhances kinetics of the σE envelope stress response pathway rather than preinducing the response. This allows bacteria to quickly adapt to sudden and severe periplasmic stress.

Indexed as

Bacterial Outer Membrane ProteinsCell MembraneEscherichia coliGene Expression Regulation, BacterialMutationProtein TransportSigma FactorSignal TransductionTranscription FactorsBacterial Outer Membrane ProteinsSigma Factorsporulation-specific sigma factorsTranscription Factors

Identifiers

PMID27325680
PMCPMC4984553
OpenAlexW2464681472

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.