Evidence map›Paper›PMID 24379359›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2014

The inner rod protein controls substrate switching and needle length in a Salmonella type III secretion system.

Matthew D Lefebre, Jorge E Galán

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
4.8field-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

28 citing papers in PubMed, 46 citations in OpenAlex.

  1. Targeting Type III Secretion System usingIndian journal of microbiology · 2025
    Review
  2. Article
  3. Infection biology ofEcoSal Plus · 2024
    Review
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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

2 authors at 1 institution in 1 country.

Matthew D LefebreDepartment of Microbial Pathogenesis, Yale University School of Medicine, New Haven, CT 06536.
Jorge E Galán
Yale University · US

Funding

MOLECULAR GENETIC ANALYSIS OF SALMONELLA CELL INVASIONR37AI030492 · NIAID · YALE UNIVERSITY · PI GALAN, JORGE E · 2000 to 2024
$10.1M
MOLECULAR GENETIC ANALYSIS OF SALMONELLA CELL INVASIONR01AI030492 · NIAID · YALE UNIVERSITY · PI Jorge E Galan · 1995 to 2026
$3.1M
MOLECULAR GENETIC ANALYSIS OF SALMONELLA CELL INVASIONR29AI030492 · NIAID · STATE UNIVERSITY NEW YORK STONY BROOK · PI GALAN, JORGE E · 1991 to 1995
–
NIAID NIH HHS AI30492NIAID NIH HHS R01 AI030492NIAID NIH HHS R37 AI030492
6 · The paper itself

Abstract

Type III secretion machines are essential for the biology of many bacteria that are pathogenic or symbiotic for animals, plants, or insects. They exert their function by delivering bacterial effector proteins into target eukaryotic cells. The core component of these machines is the needle complex, a multiprotein structure that spans the bacterial envelope and serves as a conduit for proteins that transit this secretion pathway. The needle complex is composed of a multiring base embedded in the bacterial envelope and a filament-like structure, the needle, that projects from the bacterial surface and is linked to the base by the inner rod. Assembly of the needle complex proceeds in a step-wise fashion that is initiated by the assembly of the base and is followed by the export of the building subunits for the needle and inner rod substructures. Once assembled, the needle complex reprograms its specificity and becomes competent for the secretion of effector proteins. Here through genetic, biochemical, and electron microscopy analyses of the Salmonella inner rod protein subunit PrgJ we present evidence that the assembly of the inner rod dictates the timing of substrate switching and needle length. Furthermore, the identification of mutations in PrgJ that specifically alter the hierarchy of protein secretion provides additional support for a complex role of the inner rod substructure in type III secretion.

Indexed as

Models, MolecularProtein ConformationBacterial ProteinsBacterial Secretion SystemsMembrane ProteinsMicroscopy, Electron, TransmissionSalmonella typhimuriumBacterial ProteinsBacterial Secretion SystemsMembrane Proteinsbacterial pathogenesisorganelle assemblySalmonella pathogenesis

Identifiers

PMID24379359
PMCPMC3896146
OpenAlexW1982396425

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.