Evidence map›Paper›PMID 18070889›Full record

ArticleInfection and immunity2008

Streptococcus pneumoniae choline-binding protein E interaction with plasminogen/plasmin stimulates migration across the extracellular matrix.

Cécile Attali, Cécile Frolet, Claire Durmort, Julien Offant, Thierry Vernet, Anne Marie Di Guilmi

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
3.1field-weighted citation impact, top 8% 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

32 citing papers in PubMed, 66 citations in OpenAlex.

  1. Article
  2. Article
  3. Identification of plasminogen-binding sites inFrontiers in cellular and infection microbiology · 2024
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  10. Media Matters, Examining Historical and ModernFrontiers in cellular and infection microbiology · 2021
    Review
  11. Aspf2 FromFrontiers in immunology · 2018
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  12. Article
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  15. 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

6 authors at 5 institutions in 1 country.

Cécile AttaliInstitut de Biologie Structurale Jean-Pierre Ebel UMR 5075, Laboratoire d'Ingnierie des Macromolécules, 41 rue Jules Horowitz, CNRS, CEA, and Université Joseph Fourier, Partnership for Structural Biology, F-38027 Grenoble, France.
Cécile Frolet
Claire Durmort
Julien Offant
Thierry Vernet
Anne Marie Di Guilmi
Université Grenoble Alpes · FRCEA Grenoble · FRCentre National de la Recherche Scientifique · FRInstitut de Biologie Structurale · FRUniversité Joseph Fourier · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The virulence mechanisms leading Streptococcus pneumoniae to convert from nasopharyngeal colonization to a tissue-invasive phenotype are still largely unknown. Proliferation of infection requires penetration of the extracellular matrix, which occurs by recruitment of host proteases to the bacterial cell surface. We present evidence supporting the role of choline-binding protein E (CBPE) (a member of the surface-exposed choline-binding protein family) as an important receptor for human plasminogen, the precursor of plasmin. The results of ligand overlay blot analyses, solid-phase binding assays, and surface plasmon resonance experiments support the idea of an interaction between CBPE and plasminogen. We have shown that the phosphorylcholine esterase (Pce) domain of CBPE interacts with the plasminogen kringle domains. Analysis of the crystal structure of the Pce domain, followed by site-directed mutagenesis, allowed the identification of the plasminogen-binding region composed in part by lysine residues, some of which map in a linear fashion on the surface of the Pce domain. The biological relevance of the CBPE-plasminogen interaction is supported by the fact that, compared to the wild-type strain, a mutant of pneumococcus with the cbpE gene deleted (i) displays a reduced level of plasminogen binding and plasmin activation and (ii) shows reduced ability to cross the extracellular matrix in an in vitro model. These results support the idea of a physiological role for the CBPE-plasminogen interaction in pneumococcal dissemination into human tissue.

Indexed as

Extracellular MatrixGene DeletionHumansMutagenesis, Site-DirectedPlasminogenProtein BindingProtein Interaction MappingProtein Structure, TertiaryReceptors, Cell SurfaceStreptococcus pneumoniaecholine-binding protein E, Streptococcus pneumoniaePlasminogenReceptors, Cell Surface

Identifiers

PMID18070889
PMCPMC2223458
OpenAlexW2132087438

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.