Evidence map›Paper›PMID 23893734›Full record

ArticleRNA (New York, N.Y.)2013

An RpoS-dependent sRNA regulates the expression of a chaperone involved in protein folding.

Inês Jesus Silva, Alvaro Darío Ortega, Sandra Cristina Viegas, Francisco García-Del Portillo, Cecília Maria Arraiano

Open access · bronzeAbstract read
In one paragraph

Article in RNA (New York, N.Y.), 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
2.1field-weighted citation impact, top 13% 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

23 citing papers in PubMed, 34 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. SraL sRNA interaction regulates the terminator by preventing premature transcription termination ofProceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  6. Article
  7. Review
  8. Review
  9. Review
  10. Article
  11. RNA search engines empower the bacterial intranet.Biochemical Society transactions · 2017
    Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Grad-seq guides the discovery of ProQ as a major small RNA-binding protein.Proceedings of the National Academy of Sciences of the United States of America · 2016
    Article
  17. Article
  18. Article
  19. Article
  20. 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

5 authors at 2 institutions in 2 countries.

Inês Jesus SilvaInstituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, 2780-157 Oeiras, Portugal.
Alvaro Darío Ortega
Sandra Cristina Viegas
Francisco García-Del Portillo
Cecília Maria Arraiano
Universidade Nova de Lisboa · PTConsejo Superior de Investigaciones Científicas · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Small noncoding RNAs (sRNAs) are usually expressed in the cell to face a variety of stresses. In this report we disclose the first target for SraL (also known as RyjA), a sRNA present in many bacteria, which is highly induced in stationary phase. We also demonstrate that this sRNA is directly transcribed by the major stress σ factor σ(S) (RpoS) in Salmonella enterica serovar Typhimurium. We show that SraL sRNA down-regulates the expression of the chaperone Trigger Factor (TF), encoded by the tig gene. TF is one of the three major chaperones that cooperate in the folding of the newly synthesized cytosolic proteins and is the only ribosome-associated chaperone known in bacteria. By use of bioinformatic tools and mutagenesis experiments, SraL was shown to directly interact with the 5' UTR of the tig mRNA a few nucleotides upstream of the Shine-Dalgarno region. Namely, point mutations in the sRNA (SraL*) abolished the repression of tig mRNA and could only down-regulate a tig transcript target with the respective compensatory mutations. We have also validated in vitro that SraL forms a stable duplex with the tig mRNA. This work constitutes the first report of a small RNA affecting protein folding. Taking into account that both SraL and TF are very well conserved in enterobacteria, this work will have important repercussions in the field.

Indexed as

Gene Expression Regulation, BacterialProtein FoldingBacterial ProteinsMolecular ChaperonesPoint MutationRNA, BacterialRNA, MessengerRNA, Small UntranslatedSalmonella typhimuriumSigma FactorBacterial ProteinsMolecular ChaperonesRNA, BacterialRNA, MessengerRNA, Small UntranslatedSigma Factorsigma factor KatF protein, BacteriaPPIaseRyjASraLS. TyphimuriumσS

Identifiers

PMID23893734
PMCPMC3753932
OpenAlexW2156435436

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.