Evidence map›Paper›PMID 20487288›Full record

ArticleMolecular microbiology2010

Control of effector export by the Pseudomonas aeruginosa type III secretion proteins PcrG and PcrV.

Pei-Chung Lee, Charles M Stopford, Amanda G Svenson, Arne Rietsch

Erratum issuedAbstract read
In one paragraph

Article in Molecular microbiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 59 papers.

0numbers the graph read from it
0cells of the map it votes in
59citing 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

59 citing papers in PubMed.

  1. L2 β-lactamase contributes to ceftolozane-tazobactam resistance inAntimicrobial agents and chemotherapy · 2026
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  2. Infection and immunity · 2026
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  3. Review
  4. A novel mechanism of ceftolozane-tazobactam resistance inbioRxiv : the preprint server for biology · 2026
    Article
  5. Article
  6. The small non-coding RNA sRNA102 regulatesFrontiers in cellular and infection microbiology · 2026
    Article
  7. A biofilm-tropiceLife · 2025
    Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. A Standardized Extract ofFrontiers in microbiology · 2022
    Article
  17. RecombinantInfection and immunity · 2021
    Article
  18. Article
  19. Review
  20. Review
4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

4 authors.

Pei-Chung LeeDepartment of Molecular Biology and Microbiology, Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106-4960, USA.
Charles M Stopford
Amanda G Svenson
Arne Rietsch

Funding

TUMOR METABOLISM PROGRAMP30CA043703 · NCI · CASE WESTERN RESERVE UNIVERSITY · PI MARK R CHANCE · 1987 to 2026
$142.3M
Research Training Program in Pulmonary Host Defense, Inflammation and ImmunityT32HL083823 · NHLBI · CASE WESTERN RESERVE UNIVERSITY · PI KELLEY, THOMAS J · 2006 to 2010
$881k
NCI NIH HHS P30 CA043703NCI NIH HHS P30 CA43703NHLBI NIH HHS T32 HL083823
6 · The paper itself

Abstract

Pseudomonas aeruginosa uses a type III secretion system to inject protein effectors into a targeted host cell. Effector secretion is triggered by host cell contact. How effector secretion is prevented prior to cell contact is not well understood. In all secretion systems studied to date, the needle tip protein is required for controlling effector secretion, but the mechanism by which needle tip proteins control effector secretion is unclear. Here we present data that the P. aeruginosa needle tip protein, PcrV, controls effector secretion by assembling into a functional needle tip complex. PcrV likely does not simply obstruct the secretion channel because the pore-forming translocator proteins can still be secreted while effector secretion is repressed. This finding suggests that PcrV controls effector secretion by affecting the conformation of the apparatus, shifting it from the default, effector secretion 'on' conformation, to the effector secretion 'off' conformation. We also present evidence that PcrG, which can bind to PcrV and is also involved in controlling effector export, is cytoplasmic and that the interaction between PcrG and PcrV is not required for effector secretion control by either protein. Taken together, these data allow us to propose a working model for control of effector secretion by PcrG and PcrV.

Indexed as

Bacterial ProteinsBiological TransportProtein ConformationPseudomonas aeruginosaBacterial Proteins

Identifiers

PMID20487288
PMCPMC3124366

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Registered trials

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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.