Evidence map›Paper›PMID 21908675›Full record

ArticleJournal of bacteriology2011

Posttranslocation chaperone PrsA2 regulates the maturation and secretion of Listeria monocytogenes proprotein virulence factors.

Brian M Forster, Jason Zemansky, Daniel A Portnoy, Hélène Marquis

Open access · bronzeAbstract read
In one paragraph

Article in Journal of bacteriology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.7field-weighted citation impact, top 12% 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

24 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
  2. The roles of theJournal of bacteriology · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Infection and immunity · 2024
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Frontiers in nutrition · 2019
    Article
  12. PrsA2 (CD630_35000) ofFrontiers in microbiology · 2018
    Article
  13. Listeriolysin O: from bazooka to Swiss army knife.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2017
    Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. How Listeria monocytogenes organizes its surface for virulence.Frontiers in cellular and infection microbiology · 2014
    Review
  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

4 authors at 2 institutions in 1 country.

Brian M ForsterDepartment of Microbiology and Immunology, Cornell University, Ithaca, NY 14853-6401, USA.
Jason Zemansky
Daniel A Portnoy
Hélène Marquis
Cornell University · USUniversity of California, Berkeley · US

Funding

The role of Listeria cyclic-di-AMP during infection and immunityP01AI063302 · NIAID · UNIVERSITY OF CALIFORNIA BERKELEY · PI STANLEY, SARAH A · 2004 to 2025
$45.5M
Listeria Hemolysis and Escape From a VacuoleR01AI027655 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI DANIEL A PORTNOY · 1993 to 2026
$10.1M
Listeria phospholipase C: sorting, activation, releaseR01AI052154 · NIAID · CORNELL UNIVERSITY ITHACA · PI MARQUIS, HELENE · 2003 to 2007
$1.4M
LISTERIA HEMOLYSIN AND INTRACELLULAR GROWTHR29AI027655 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI PORTNOY, DANIEL A · 1988 to 1992
–
NIAID NIH HHS AI063302NIAID NIH HHS AI27655NIAID NIH HHS AI52154NIAID NIH HHS P01 AI063302NIAID NIH HHS R01 AI027655NIAID NIH HHS R01 AI052154
6 · The paper itself

Abstract

PrsA2 is a conserved posttranslocation chaperone and a peptidyl prolyl cis-trans isomerase (PPIase) that contributes to the virulence of the Gram-positive intracellular pathogen Listeria monocytogenes. One of the phenotypes associated with a prsA2 mutant is decreased activity of the broad-range phospholipase C (PC-PLC). PC-PLC is made as a proenzyme whose maturation is mediated by a metalloprotease (Mpl). The proforms of PC-PLC and Mpl accumulate at the membrane-cell wall interface until a decrease in pH triggers their maturation and rapid secretion into the host cell. In this study, we examined the mechanism by which PrsA2 regulates the activity of PC-PLC. We observed that in the absence of PrsA2, the proenzymes are secreted at physiological pH and do not mature upon a decrease in pH. The sensitivity of the prsA2 mutant to cell wall hydrolases was modified. However, no apparent changes in cell wall porosity were detected. Interestingly, synthesis of PC-PLC in the absence of its propeptide lead to the secretion of a fully active enzyme in the cytosol of host cells independent of PrsA2, indicating that neither the propeptide of PC-PLC nor PrsA2 is required for native folding of the catalytic domain, although both influence secretion of the enzyme. Taken together, these results suggest that PrsA2 regulates compartmentalization of Mpl and PC-PLC, possibly by influencing cell wall properties and interacting with the PC-PLC propeptide. Moreover, the ability of these proproteins to respond to a decrease in pH during intracellular growth depends on their localization at the membrane-cell wall interface.

Indexed as

Bacterial ProteinsHydrogen-Ion ConcentrationListeria monocytogenesMetalloendopeptidasesPeptidylprolyl IsomeraseProtein PrecursorsProtein Processing, Post-TranslationalType C PhospholipasesVirulence FactorsBacterial ProteinsMetalloendopeptidasesmpl protein, Listeria monocytogenesPeptidylprolyl Isomerasephosphatidylcholine-specific phospholipase CProtein PrecursorsPrsA2 protein, Listeria monocytogenesType C PhospholipasesVirulence Factors

Identifiers

PMID21908675
PMCPMC3194926
OpenAlexW2132191781

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.