Evidence map›Paper›PMID 32533919›Full record

ArticleMolecular cell2020

Stress Can Induce Transcription of Toxin-Antitoxin Systems without Activating Toxin.

Michele LeRoux, Peter H Culviner, Yue J Liu, Megan L Littlehale, Michael T Laub

Open access · bronzeAbstract read
In one paragraph

Article in Molecular cell, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 86 papers.

0numbers the graph read from it
0cells of the map it votes in
86citing papers in PubMed
15.8field-weighted citation impact, top 1% 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

86 citing papers in PubMed, 137 citations in OpenAlex.

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  8. Review
  9. Insights into toxin-antitoxin systems in the genusApplied and environmental microbiology · 2025
    Review
  10. Article
  11. Article
  12. Article
  13. Review
  14. Review
  15. Article
  16. Review
  17. Article
  18. Review
  19. Antibiotic-recalcitrant Salmonella during infection.Nature reviews. Microbiology · 2025
    Review
  20. Article

26 more citing papers are in PubMed but not listed here.

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

5 authors at 2 institutions in 1 country.

Michele LeRouxDepartment of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Peter H CulvinerDepartment of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Yue J LiuDepartment of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Megan L LittlehaleDepartment of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Michael T LaubDepartment of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Howard Hughes Medical Institute, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. Electronic address: laub@mit.edu.
Massachusetts Institute of Technology · USHoward Hughes Medical Institute · US

Funding

PRE-DOCTORAL TRAINING IN THE BIOLOGICAL SCIENCEST32GM007287 · NIGMS · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI BELL, STEPHEN P., KEATING, AMY E · 1985 to 2019
$40.8M
Cell Cycle Regulation in Caulobacter CrescentusR01GM082899 · NIGMS · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI LAUB, MICHAEL · 2008 to 2020
$3.8M
NIGMS NIH HHS R01 GM082899NIGMS NIH HHS T32 GM007287
6 · The paper itself

Abstract

Toxin-antitoxin (TA) systems are ubiquitous genetic elements in bacterial genomes, but their functions are controversial. Although they are frequently postulated to regulate cell growth following stress, few null phenotypes for TA systems have been reported. Here, we show that TA transcript levels can increase substantially in response to stress, but toxin is not liberated. We find that the growth of an Escherichia coli strain lacking ten TA systems encoding endoribonuclease toxins is not affected following exposure to six stresses that each trigger TA transcription. Additionally, using RNA sequencing, we find no evidence of mRNA cleavage following stress. Stress-induced transcription arises from antitoxin degradation and relief of transcriptional autoregulation. Importantly, although free antitoxin is readily degraded in vivo, antitoxin bound to toxin is protected from proteolysis, preventing release of active toxin. Thus, transcription is not a reliable marker of TA activity, and TA systems do not strongly promote survival following individual stresses.

Indexed as

Gene Expression Regulation, BacterialStress, PhysiologicalToxin-Antitoxin SystemsTranscription, GeneticBacterial ToxinsDNA-Binding ProteinsEscherichia coliEscherichia coli ProteinsPlasmidsProteolysisRNA, BacterialRNA-SeqBacterial ToxinsDNA-Binding ProteinsEscherichia coli ProteinsMqsA protein, E coliRelE protein, E coliRNA, BacterialYefM protein, E coliheat shockLonMqsRAprotein degradationpulse-chase assayYefM-YoeB

Identifiers

PMID32533919
PMCPMC7368831
OpenAlexW3035525526

What OpenQuestion holds

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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.