Evidence map›Paper›PMID 20506020›Full record

ArticleJournal of molecular evolution2010

Evolution of the RpoS regulon: origin of RpoS and the conservation of RpoS-dependent regulation in bacteria.

Sarah M Chiang, Herb E Schellhorn

Abstract read
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In one paragraph

Article in Journal of molecular evolution, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
3.6field-weighted citation impact, top 7% 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

26 citing papers in PubMed, 54 citations in OpenAlex.

  1. Transcriptome-Proteome Profiling inJournal of proteome research · 2025
    Article
  2. RpoS and the bacterial general stress response.Microbiology and molecular biology reviews : MMBR · 2024
    Review
  3. RpoS-Regulated Genes and Phenotypes in the Phytopathogenic BacteriumInternational journal of molecular sciences · 2023
    Article
  4. Review
  5. Article
  6. Lyme Disease in Humans.Current issues in molecular biology · 2021
    Article
  7. Gene Regulation and Transcriptomics.Current issues in molecular biology · 2021
    Article
  8. Article
  9. The Antibiotic Andrimid Produced byFrontiers in microbiology · 2020
    Article
  10. Review
  11. Article
  12. Article
  13. The RpoS Gatekeeper inFrontiers in microbiology · 2019
    Article
  14. Article
  15. Article
  16. Review
  17. Review
  18. Review
  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

2 authors at 1 institution in 1 country.

Sarah M ChiangDepartment of Biology, McMaster University, Hamilton, L8S 4K1, ON, Canada. chiangsm@mcmaster.ca
Herb E Schellhorn
McMaster University · CA

Funding

Canadian Institutes of Health Research
6 · The paper itself

Abstract

The RpoS sigma factor in proteobacteria regulates genes in stationary phase and in response to stress. Although of conserved function, the RpoS regulon may have different gene composition across species due to high genomic diversity and to known environmental conditions that select for RpoS mutants. In this study, the distribution of RpoS homologs in prokaryotes and the differential dependence of regulon members on RpoS for expression in two gamma-proteobacteria (Escherichia coli and Pseudomonas aeruginosa) were examined. Using a maximum-likelihood phylogeny and reciprocal best hits analysis, we show that the RpoS sigma factor is conserved within gamma-, beta-, and delta-proteobacteria. Annotated RpoS of Borrelia and the enteric RpoS are postulated to have separate evolutionary origins. To determine the conservation of RpoS-dependent gene expression across species, reciprocal best hits analysis was used to identify orthologs of the E. coli RpoS regulon in the RpoS regulon of P. aeruginosa. Of the 186 RpoS-dependent genes of E. coli, 50 proteins have an ortholog within the P. aeruginosa genome. Twelve genes of the 50 orthologs are RpoS-dependent in both species, and at least four genes are regulated by RpoS in other gamma-proteobacteria. Despite RpoS conservation in gamma-, beta-, and delta-proteobacteria, RpoS regulon composition is subject to modification between species. Environmental selection for RpoS mutants likely contributes to the evolutionary divergence and specialization of the RpoS regulon within different bacterial genomes.

Indexed as

Evolution, MolecularBacterial ProteinsEscherichia coliGene Expression Regulation, BacterialLikelihood FunctionsPhylogenyProteobacteriaPseudomonas aeruginosaRegulonSigma FactorBacterial ProteinsSigma Factorsigma factor KatF protein, Bacteria

Identifiers

PMID20506020
OpenAlexW1966532618

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.