Evidence map›Paper›PMID 19114478›Full record

ArticleJournal of bacteriology2009

Regulation of expression of the region 3 promoter of the Escherichia coli K5 capsule gene cluster involves H-NS, SlyA, and a large 5' untranslated region.

Peng Xue, David Corbett, Marie Goldrick, Clare Naylor, Ian S Roberts

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
1.0field-weighted citation impact, top 21% 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

17 citing papers in PubMed, 29 citations in OpenAlex.

  1. Microbiology (Reading, England) · 2026
    Article
  2. ChronicInternational journal of molecular sciences · 2025
    Article
  3. Article
  4. Frontiers in microbiology · 2025
    Article
  5. Regulation ofFrontiers in microbiology · 2022
    Review
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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 1 institution in 1 country.

Peng XueFaculty of Life Sciences, University of Manchester, Manchester M139PT, United Kingdom.
David Corbett
Marie Goldrick
Clare Naylor
Ian S Roberts
University of Manchester · GB

Funding

Biotechnology and Biological Sciences Research CouncilMedical Research Council
6 · The paper itself

Abstract

Escherichia coli group 2 capsule gene clusters are temperature regulated, being expressed at 37 degrees C but not at 20 degrees C. Expression is regulated at the level of transcription by two convergent promoters, PR1 and PR3. In this paper, we show that regulation of transcription from PR3 involves a number of novel features including H-NS, SlyA, and a large 741-bp 5' untranslated region (UTR). H-NS represses transcription from PR3 at 20 degrees C and binds both 5' and 3' of the transcription start site. The 3' downstream regulatory element (DRE) was essential for temperature-dependent H-NS repression. At 37 degrees C, SlyA activates transcription independent of H-NS but maximal transcription requires H-NS. The UTR is present between the transcription start site and the first gene in the operon, kpsM. We demonstrate that the UTR, as well as containing the H-NS DRE, functions to moderate the extent of transcription that reaches kpsM and allows the binding of antitermination factor RfaH.

Indexed as

Gene Expression Regulation, BacterialPromoter Regions, GeneticUntranslated RegionsBacterial CapsulesBacterial ProteinsDNA-Binding ProteinsEscherichia coliEscherichia coli ProteinsMembrane Transport ProteinsMultigene FamilyProtein BindingTemperatureTranscription FactorsTranscription Initiation SiteBacterial Proteinscapsular polysaccharide K5DNA-Binding ProteinsEscherichia coli ProteinsH-NS protein, bacteriakpsM protein, E coliMembrane Transport ProteinssalmolysinTranscription FactorsUntranslated Regions

Identifiers

PMID19114478
PMCPMC2648368
OpenAlexW2117867627

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.