Evidence map›Paper›PMID 17015646›Full record

ArticleJournal of bacteriology2006

Altered Ca(2+) regulation of Yop secretion in Yersinia enterocolitica after DNA adenine methyltransferase overproduction is mediated by Clp-dependent degradation of LcrG.

Stefan Fälker, M Alexander Schmidt, Gerhard Heusipp

Abstract read
In one paragraph

Article in Journal of bacteriology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
–field-weighted citation impact
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

7 citing papers in PubMed.

  1. Comparison ofEpigenomes · 2023
    Article
  2. Article
  3. The Coli Surface Antigen CS3 of EnterotoxigenicFrontiers in microbiology · 2019
    Article
  4. Review
  5. DNA Methylation.EcoSal Plus · 2014
    Article
  6. Article
  7. 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

3 authors.

Stefan FälkerZMBE, Institut für Infektiologie, von-Esmarch-Str. 56, 48149 Münster, Germany.
M Alexander Schmidt
Gerhard Heusipp

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

DNA methylation by the DNA adenine methyltransferase (Dam) interferes with the coordinated expression of virulence functions in an increasing number of pathogens. While analyzing the effect of Dam on the virulence of the human pathogen Yersinia enterocolitica, we observed type III secretion of Yop effector proteins under nonpermissive conditions. Dam alters the Ca(2+) regulation of Yop secretion but does not affect the temperature regulation of Yop/Ysc expression. The phenotype is different from that of classical "Ca(2+)-blind" mutants of Yersinia, as Dam-overproducing (Dam(OP)) strains still translocate Yops polarly into eukaryotic cells. Although transcription of the lcrGV and yopN-tyeA operons is slightly upregulated, LcrG is absent from lysates of Dam(OP) bacteria, while the amounts of YopN and TyeA are not changed. We present evidence that clpXP expression increases after Dam overproduction and that the ClpP protease then degrades LcrG, thereby releasing a block in type III secretion. This is the first example of posttranslational regulation of type III secretion by the Clp protease and adds a new flavor to the complex regulatory mechanisms underlying the controlled release of effector proteins from bacterial cells.

Indexed as

Gene Expression Regulation, BacterialBacterial Outer Membrane ProteinsBacterial Proteinsbeta-GalactosidaseBlotting, WesternCalciumCysteine EndopeptidasesElectrophoresis, Polyacrylamide GelEndopeptidase ClpGene ExpressionGenes, ReporterPore Forming Cytotoxic ProteinsProtein Tyrosine PhosphatasesSite-Specific DNA-Methyltransferase (Adenine-Specific)Virulence FactorsYersinia enterocoliticaBacterial Outer Membrane ProteinsBacterial Proteinsbeta-GalactosidaseCalciumCysteine EndopeptidasesDam methyltransferaseEndopeptidase ClpLcrG protein, YersiniaPore Forming Cytotoxic ProteinsProtein Tyrosine PhosphatasesSite-Specific DNA-Methyltransferase (Adenine-Specific)Virulence FactorsyopE protein, YersiniayopH protein, YersiniayopM protein, YersiniaYopT protein, Yersinia

Identifiers

PMID17015646
PMCPMC1636222

What OpenQuestion holds

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Registered trials

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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.