Evidence map›Paper›PMID 19759820›Full record

ArticlePloS one2009

The NlpD lipoprotein is a novel Yersinia pestis virulence factor essential for the development of plague.

Avital Tidhar, Yehuda Flashner, Sara Cohen, Yinon Levi, Ayelet Zauberman, David Gur, Moshe Aftalion, Eytan Elhanany, Anat Zvi, Avigdor Shafferman and 1 more

Abstract read
In one paragraph

Article in PloS one, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.

0numbers the graph read from it
0cells of the map it votes in
51citing 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

51 citing papers in PubMed.

  1. Trial
  2. Novel Bivalent mRNA-LNP Vaccine for Highly Effective Protection against Pneumonic Plague.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. The lipoprotein NlpD inVirulence · 2021
    Article
  14. Article
  15. Article
  16. Mutation ofAntimicrobial agents and chemotherapy · 2020
    Article
  17. Article
  18. Article
  19. Article
  20. 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

11 authors.

Avital TidharDepartment of Biochemistry and Molecular Genetics, Israel Institute for Biological Research, Ness-Ziona, Israel.
Yehuda Flashner
Sara Cohen
Yinon Levi
Ayelet Zauberman
David Gur
Moshe Aftalion
Eytan Elhanany
Anat Zvi
Avigdor Shafferman
Emanuelle Mamroud

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Yersinia pestis is the causative agent of plague. Previously we have isolated an attenuated Y. pestis transposon insertion mutant in which the pcm gene was disrupted. In the present study, we investigated the expression and the role of pcm locus genes in Y. pestis pathogenesis using a set of isogenic surE, pcm, nlpD and rpoS mutants of the fully virulent Kimberley53 strain. We show that in Y. pestis, nlpD expression is controlled from elements residing within the upstream genes surE and pcm. The NlpD lipoprotein is the only factor encoded from the pcm locus that is essential for Y. pestis virulence. A chromosomal deletion of the nlpD gene sequence resulted in a drastic reduction in virulence to an LD(50) of at least 10(7) cfu for subcutaneous and airway routes of infection. The mutant was unable to colonize mouse organs following infection. The filamented morphology of the nlpD mutant indicates that NlpD is involved in cell separation; however, deletion of nlpD did not affect in vitro growth rate. Trans-complementation experiments with the Y. pestis nlpD gene restored virulence and all other phenotypic defects. Finally, we demonstrated that subcutaneous administration of the nlpD mutant could protect animals against bubonic and primary pneumonic plague. Taken together, these results demonstrate that Y. pestis NlpD is a novel virulence factor essential for the development of bubonic and pneumonic plague. Further, the nlpD mutant is superior to the EV76 prototype live vaccine strain in immunogenicity and in conferring effective protective immunity. Thus it could serve as a basis for a very potent live vaccine against bubonic and pneumonic plague.

Indexed as

Amino Acid SequenceAnimalsBacterial ProteinsDNA Transposable ElementsEscherichia coli ProteinsFemaleGene Expression ProfilingGene Expression Regulation, BacterialGenetic Complementation TestGenome, BacterialLipoproteinsMiceMolecular Sequence DataPlagueSequence Homology, Amino AcidStem CellsBacterial ProteinsDNA Transposable ElementsEscherichia coli ProteinsLipoproteinsNlpD protein, bacteriaNlpD protein, E coliVirulence Factors

Identifiers

PMID19759820
PMCPMC2736372

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.