Evidence map›Paper›PMID 19346305›Full record

ArticleJournal of bacteriology2009

The propeptide of the metalloprotease of Listeria monocytogenes controls compartmentalization of the zymogen during intracellular infection.

Heather S O'Neil, Brian M Forster, Kari L Roberts, Andrew J Chambers, Alan Pavinski Bitar, Hélène Marquis

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.9field-weighted citation impact, top 16% 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

9 citing papers in PubMed, 13 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. 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

6 authors at 1 institution in 1 country.

Heather S O'NeilDepartment of Microbiology and Immunology, Cornell University, Ithaca, NY 14853-6401, USA.
Brian M Forster
Kari L Roberts
Andrew J Chambers
Alan Pavinski Bitar
Hélène Marquis
Cornell University · US

Funding

Listeria phospholipase C: sorting, activation, releaseR01AI052154 · NIAID · CORNELL UNIVERSITY ITHACA · PI MARQUIS, HELENE · 2003 to 2007
$1.4M
NIAID NIH HHS AI52154NIAID NIH HHS R01 AI052154
6 · The paper itself

Abstract

Integral to the virulence of the intracellular bacterial pathogen Listeria monocytogenes is its metalloprotease (Mpl). Mpl regulates the activity and compartmentalization of the bacterial broad-range phospholipase C (PC-PLC). Mpl is secreted as a proprotein that undergoes intramolecular autocatalysis to release its catalytic domain. In related proteases, the propeptide serves as a folding catalyst and can act either in cis or in trans. Propeptides can also influence protein compartmentalization and intracellular trafficking or decrease folding kinetics. In this study, we aimed to determine the role of the Mpl propeptide by monitoring the behavior of Mpl synthesized in the absence of its propeptide (MplDeltapro) and of two Mpl single-site mutants with unstable propeptides: Mpl(H75V) and Mpl(H95L). We observed that all three Mpl mutants mediate PC-PLC activation when bacteria are grown on semisolid medium, but to a lesser extent than wild-type Mpl, indicating that, although not essential, the propeptide enhances the production of active Mpl. However, the mutant proteins were not functional in infected cells, as determined by monitoring PC-PLC maturation and compartmentalization. This defect could not be rescued by providing the propeptide in trans to the mplDeltapro mutant. We tested the compartmentalization of Mpl during intracellular infection and observed that the mutant Mpl species were aberrantly secreted in the cytosol of infected cells. These data indicated that the propeptide of Mpl serves to maintain bacterium-associated Mpl and that this localization is essential to the function of Mpl during intracellular infection.

Indexed as

Bacterial ProteinsBlotting, WesternElectrophoresis, Polyacrylamide GelGene DeletionHeLa CellsHumansHydrogen-Ion ConcentrationImmunoprecipitationListeria monocytogenesMetalloendopeptidasesMicroscopy, FluorescencePeptide FragmentsPoint MutationProtein StabilityType C PhospholipasesBacterial ProteinsMetalloendopeptidasesmpl protein, Listeria monocytogenesPeptide Fragmentsphosphatidylcholine-specific phospholipase CType C Phospholipases

Identifiers

PMID19346305
PMCPMC2681923
OpenAlexW2142210869

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.