Evidence map›Paper›PMID 19210624›Full record

ArticleMolecular microbiology2009

Differential expression of a virulence factor in pathogenic and non-pathogenic mycobacteria.

Edith N G Houben, Anne Walburger, Giorgio Ferrari, Liem Nguyen, Charles J Thompson, Christian Miess, Guido Vogel, Bernd Mueller, Jean Pieters

Open access · greenAbstract read
In one paragraph

Article in Molecular microbiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
3.0field-weighted citation impact, top 9% 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

20 citing papers in PubMed, 35 citations in OpenAlex.

  1. Review
  2. Deletion ofAntimicrobial agents and chemotherapy · 2021
    Article
  3. Review
  4. Article
  5. PknG supports mycobacterial adaptation in acidic environment.Molecular and cellular biochemistry · 2018
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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

9 authors at 4 institutions in 5 countries.

Edith N G HoubenBiozentrum, University of Basel, Klingelbergstrasse 50/70, 4056 Basel, Switzerland.
Anne Walburger
Giorgio Ferrari
Liem Nguyen
Charles J Thompson
Christian Miess
Guido Vogel
Bernd Mueller
Jean Pieters
University of Basel · CHRoche (Switzerland) · CHUniversity of British Columbia · CAKantonsspital Baselland · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The pathogenicity of mycobacterial infections depends on virulence factors that mediate survival inside host macrophages. These virulence factors are generally believed to be specific for pathogenic species and absent or mutated in non-pathogenic strains. The serine/threonine protein kinase G (PknG) mediates survival of mycobacteria within macrophages by blocking lysosomal delivery. Here we describe a gene of the non-pathogenic species Mycobacterium smegmatis that is 78% identical with pknG of Mycobacterium tuberculosis and M. bovis bacillus Calmette-Guérin (BCG). When cloned into expression vectors, the M. smegmatis pknG orthologue produced an active kinase and performed the same function as its M. bovis BCG counterpart in intracellular survival. In addition, similar levels of pknG transcripts were found in M. bovis BCG and M. smegmatis. However, virtually no translation product of chromosomal pknG could be detected in M. smegmatis both after in vitro growth and after macrophage infection. This lack of efficient translation was shown to be caused by regulatory elements in the upstream region of the M. smegmatis gene. The data reveal dramatically increased translational efficiency of a virulence gene in a pathogenic mycobacterium compared with a non-pathogenic mycobacterium suggesting that changes in expression levels may underlie evolution of pknG and other pathogenicity genes in mycobacterium.

Indexed as

Amino Acid SequenceAnimalsBacterial ProteinsCloning, MolecularCyclic GMP-Dependent Protein KinasesGene Expression Regulation, BacterialGenes, BacterialMacrophagesMiceMice, Inbred C57BLMolecular Sequence DataMycobacterium smegmatisProtein BiosynthesisRNA, BacterialSequence AlignmentSequence Analysis, DNABacterial ProteinsCyclic GMP-Dependent Protein KinasesRNA, BacterialVirulence Factors

Identifiers

PMID19210624
PMCPMC2784876
OpenAlexW2154752019

What OpenQuestion holds

Textmetadata
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.