Evidence map›Paper›PMID 26216420›Full record

ArticleInfection and immunity2015

Legionella pneumophila Effector LpdA Is a Palmitoylated Phospholipase D Virulence Factor.

Gunnar N Schroeder, Philipp Aurass, Clare V Oates, Edward W Tate, Elizabeth L Hartland, Antje Flieger, Gad Frankel

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
4.3field-weighted citation impact, top 6% 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

30 citing papers in PubMed, 55 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Review
  5. Insights into the role of legionella effectors on host metabolic perturbations.Frontiers in cellular and infection microbiology · 2024
    Review
  6. Article
  7. Review
  8. VpdC is a ubiquitin-activated phospholipase effector that regulatesProceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  9. Review
  10. Review
  11. Protein S-Palmitoylation and Lung Diseases.Advances in experimental medicine and biology · 2021
    Article
  12. Article
  13. Review
  14. Review
  15. Phosphoinositides and the Fate ofFrontiers in immunology · 2020
    Review
  16. Article
  17. TheThe Journal of biological chemistry · 2019
    Article
  18. Article
  19. Article
  20. Review
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

7 authors at 4 institutions in 3 countries.

Gunnar N SchroederMRC Centre for Molecular Bacteriology and Infection, Department of Life Sciences, Imperial College, London, United Kingdom g.schroeder@imperial.ac.uk g.frankel@imperial.ac.uk.
Philipp AurassDivision of Enteropathogenic Bacteria and Legionella (Fg11), Robert Koch Institute, Wernigerode, Germany.
Clare V OatesDepartment of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia.
Edward W TateDepartment of Chemistry, South Kensington Campus, Imperial College, London, United Kingdom.
Elizabeth L HartlandDepartment of Microbiology and Immunology, University of Melbourne, Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia.
Antje FliegerDivision of Enteropathogenic Bacteria and Legionella (Fg11), Robert Koch Institute, Wernigerode, Germany.
Gad FrankelMRC Centre for Molecular Bacteriology and Infection, Department of Life Sciences, Imperial College, London, United Kingdom g.schroeder@imperial.ac.uk g.frankel@imperial.ac.uk.
Imperial College London · GBRobert Koch Institute · DEPeter Doherty Institute · AUUniversity of Melbourne · AU

Funding

Medical Research Council MR/J006874/1Medical Research Council MR/L018225/1
6 · The paper itself

Abstract

Legionella pneumophila is a bacterial pathogen that thrives in alveolar macrophages, causing a severe pneumonia. The virulence of L. pneumophila depends on its Dot/Icm type IV secretion system (T4SS), which delivers more than 300 effector proteins into the host, where they rewire cellular signaling to establish a replication-permissive niche, the Legionella-containing vacuole (LCV). Biogenesis of the LCV requires substantial redirection of vesicle trafficking and remodeling of intracellular membranes. In order to achieve this, several T4SS effectors target regulators of membrane trafficking, while others resemble lipases. Here, we characterized LpdA, a phospholipase D effector, which was previously proposed to modulate the lipid composition of the LCV. We found that ectopically expressed LpdA was targeted to the plasma membrane and Rab4- and Rab14-containing vesicles. Subcellular targeting of LpdA required a C-terminal motif, which is posttranslationally modified by S-palmitoylation. Substrate specificity assays showed that LpdA hydrolyzed phosphatidylinositol, -inositol-3- and -4-phosphate, and phosphatidylglycerol to phosphatidic acid (PA) in vitro. In HeLa cells, LpdA generated PA at vesicles and the plasma membrane. Imaging of different phosphatidylinositol phosphate (PIP) and organelle markers revealed that while LpdA did not impact on membrane association of various PIP probes, it triggered fragmentation of the Golgi apparatus. Importantly, although LpdA is translocated inefficiently into cultured cells, an L. pneumophila ΔlpdA mutant displayed reduced replication in murine lungs, suggesting that it is a virulence factor contributing to L. pneumophila infection in vivo.

Indexed as

AnimalsBacterial ProteinsCell MembraneHumansLegionella pneumophilaLegionnaires' DiseaseLipoylationMicePhospholipase DProtein TransportVacuolesVirulence FactorsBacterial ProteinsPhospholipase DVirulence Factors

Identifiers

PMID26216420
PMCPMC4567653
OpenAlexW2126839351

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.