Evidence map›Paper›PMID 25040609›Full record

ArticleMolecular microbiology2014

Heterogeneity in ess transcriptional organization and variable contribution of the Ess/Type VII protein secretion system to virulence across closely related Staphylocccus aureus strains.

Holger Kneuper, Zhen Ping Cao, Kate B Twomey, Martin Zoltner, Franziska Jäger, James S Cargill, James Chalmers, Magdalena M van der Kooi-Pol, Jan Maarten van Dijl, Robert P Ryan and 2 more

Open access · hybridAbstract read
In one paragraph

Article in Molecular microbiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed
4.9field-weighted citation impact, top 4% 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

66 citing papers in PubMed, 94 citations in OpenAlex.

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6 more citing papers are in PubMed but not listed here.

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

12 authors at 3 institutions in 3 countries.

Holger KneuperDivision of Molecular Microbiology, College of Life Sciences, University of Dundee, Dundee, UK.
Zhen Ping Cao
Kate B Twomey
Martin Zoltner
Franziska Jäger
James S Cargill
James Chalmers
Magdalena M van der Kooi-Pol
Jan Maarten van Dijl
Robert P Ryan
William N Hunter
Tracy Palmer
University of Dundee · GBUniversity College Cork · IEUniversity of Groningen · NL

Funding

Biotechnology and Biological Sciences Research Council BB/H007571/1Medical Research Council G1100376Medical Research Council G117/519Wellcome Trust 100204Wellcome Trust WT100204AIA
6 · The paper itself

Abstract

The Type VII protein secretion system, found in Gram-positive bacteria, secretes small proteins, containing a conserved W-x-G amino acid sequence motif, to the growth medium. Staphylococcus aureus has a conserved Type VII secretion system, termed Ess, which is dispensable for laboratory growth but required for virulence. In this study we show that there are unexpected differences in the organization of the ess gene cluster between closely related strains of S. aureus. We further show that in laboratory growth medium different strains of S. aureus secrete the EsxA and EsxC substrate proteins at different growth points, and that the Ess system in strain Newman is inactive under these conditions. Systematic deletion analysis in S. aureus RN6390 is consistent with the EsaA, EsaB, EssA, EssB, EssC and EsxA proteins comprising core components of the secretion machinery in this strain. Finally we demonstrate that the Ess secretion machinery of two S. aureus strains, RN6390 and COL, is important for nasal colonization and virulence in the murine lung pneumonia model. Surprisingly, however, the secretion system plays no role in the virulence of strain SA113 under the same conditions.

Indexed as

Bacterial Secretion SystemsGene Expression Regulation, BacterialAnimalsBacterial ProteinsFemaleHumansMiceMice, Inbred C57BLStaphylococcal InfectionsStaphylococcus aureusVirulenceBacterial ProteinsBacterial Secretion Systems

Identifiers

PMID25040609
PMCPMC4285178
OpenAlexW2136429851

What OpenQuestion holds

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LicenceCC BY
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.