Evidence map›Paper›PMID 20487271›Full record

ArticleMolecular microbiology2010

N-acetyllactosamine-induced retraction of bundle-forming pili regulates virulence-associated gene expression in enteropathogenic Escherichia coli.

Romney M Humphries, Thomas P Griener, Stefanie L Vogt, George L Mulvey, Tracy Raivio, Michael S Donnenberg, Pavel I Kitov, Michael Surette, Glen D Armstrong

Open access · bronzeAbstract read
In one paragraph

Article in Molecular microbiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
3.3field-weighted citation impact, top 10% 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

18 citing papers in PubMed, 32 citations in OpenAlex.

  1. Article
  2. Type IV pili ofEcoSal Plus · 2024
    Review
  3. Article
  4. Review
  5. Successful Host Adaptation of IncK2 Plasmids.Frontiers in microbiology · 2019
    Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. [Acute diarrheal disease caused by enteropathogenic Escherichia coli in Colombia].Revista chilena de infectologia : organo oficial de la Sociedad Chilena de Infectologia · 2014
    Review
  11. Article
  12. Type IV pilin proteins: versatile molecular modules.Microbiology and molecular biology reviews : MMBR · 2012
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
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

9 authors at 3 institutions in 2 countries.

Romney M HumphriesDepartment of Microbiology and Infectious Diseases, University of Calgary, Calgary, AB, Canada.
Thomas P Griener
Stefanie L Vogt
George L Mulvey
Tracy Raivio
Michael S Donnenberg
Pavel I Kitov
Michael Surette
Glen D Armstrong
University of Calgary · CAUniversity of Alberta · CAUniversity of Maryland, Baltimore · US

Funding

MOLECULAR BASIS OF LOCALIZED ADHERENCE IN E. COLIR01AI037606 · NIAID · UNIVERSITY OF MARYLAND BALTIMORE · PI DONNENBERG, MICHAEL S · 1995 to 2009
$2.5M
CIHRNIAID NIH HHS R01 AI037606
6 · The paper itself

Abstract

Enteropathogenic Escherichia coli (EPEC) are a major cause of infant morbidity and mortality due to diarrhoea in developing countries. The pathogenesis of EPEC is dependent on a coordinated multi-step process culminating in the intimate adherence of the organisms to the host's intestinal mucosa. During the initial stages of the EPEC colonization process, the fimbrial adhesin, bundle-forming pili (BFP), plays an integral role. We previously reported that the major BFP structural subunit, bundlin, displays lectin-like properties, which enables BFP to initially tether EPEC to N-acetyllactosamine (LacNAc) glycan receptors on host cell surfaces. We also reported that incubating EPEC with synthetic LacNAc-bearing neoglycoconjugates not only inhibits their adherence to host cells, but also induces BFP retraction and subsequent degradation of the bundlin subunits. Herein, we demonstrate that the periplasmic serine protease, DegP, is required for degrading bundlin during this process. We also show that DegP appears to act as a bundlin chaperone during BFP assembly and that LacNAc-BSA-induced BFP retraction is followed by transcriptional upregulation of the BFP operon and downregulation of the locus of enterocyte effacement operons in EPEC.

Indexed as

Enteropathogenic Escherichia coliGene Expression Regulation, BacterialAmino SugarsEscherichia coli ProteinsFimbriae, BacterialFimbriae ProteinsHeat-Shock ProteinsHumansInfantMolecular ChaperonesMolecular StructureOperonPeriplasmic ProteinsSerine EndopeptidasesTranscription, GeneticAmino SugarsBfpA protein, E coliDegP proteaseEscherichia coli ProteinsFimbriae ProteinsHeat-Shock ProteinsMolecular ChaperonesN-acetyllactosaminePeriplasmic ProteinsSerine Endopeptidases

Identifiers

PMID20487271
PMCPMC2900475
OpenAlexW1557218655

What OpenQuestion holds

Textmetadata
LicenceTDM
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.