Evidence map›Paper›PMID 17416645›Full record

ArticleJournal of bacteriology2007

Structural properties of periplasmic SodCI that correlate with virulence in Salmonella enterica serovar Typhimurium.

Radha Krishnakumar, Byoungkwan Kim, Elizabeth A Mollo, James A Imlay, James M Slauch

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
4.3field-weighted citation impact, top 7% 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

22 citing papers in PubMed, 34 citations in OpenAlex.

  1. Review
  2. Genome characterization ofFrontiers in microbiology · 2024
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Mechanisms of copper homeostasis in bacteria.Frontiers in cellular and infection microbiology · 2013
    Article
  15. Article
  16. Review
  17. Article
  18. Review
  19. Article
  20. 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

5 authors at 2 institutions in 1 country.

Radha KrishnakumarDepartment of Microbiology, University of Illinois, B103 Chemical and Life Sciences Laboratory, 601 S. Goodwin Ave., Urbana, IL 61801, USA.
Byoungkwan Kim
Elizabeth A Mollo
James A Imlay
James M Slauch
Goodwin College · USUniversity of Illinois Urbana-Champaign · US

Funding

The Physiology of Oxidative Stress in Escherichia coliR37GM049640 · NIGMS · UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN · PI IMLAY, JAMES A. · 2007 to 2016
$5.3M
Functional Analysis of Cu/Zn Superoxide DismutaseR01AI063230 · NIAID · UNIVERSITY OF ILLINOIS URBANA-CHAMPAIGN · PI SLAUCH, JAMES M. · 2005 to 2009
$1.7M
NIAID NIH HHS AI063230NIAID NIH HHS R01 AI063230NIGMS NIH HHS R37 GM049640
6 · The paper itself

Abstract

Salmonella enterica strains survive and propagate in macrophages by both circumventing and resisting the antibacterial effectors normally delivered to the phagosome. An important aspect of Salmonella resistance is the production of periplasmic superoxide dismutase to combat phagocytic superoxide. S. enterica serovar Typhimurium strain 14028 produces two periplasmic superoxide dismutases: SodCI and SodCII. Both enzymes are produced during infection, but only SodCI contributes to virulence in the animal. Although 60% identical to SodCII at the amino acid level with very similar enzymatic properties, SodCI is dimeric, protease resistant, and tethered within the periplasm via a noncovalent interaction. In contrast, SodCII is monomeric and protease sensitive and is released from the periplasm normally by osmotic shock. We have constructed an enzymatically active monomeric SodCI enzyme by site-directed mutagenesis. The resulting protein was released by osmotic shock and sensitive to protease and could not complement the loss of wild-type dimeric SodCI during infection. To distinguish which property is most critical during infection, we cloned and characterized related SodC proteins from a variety of bacteria. Brucella abortus SodC was monomeric and released by osmotic shock but was protease resistant and could complement SodCI in the animal. These data suggest that protease resistance is a critical property that allows SodCI to function in the harsh environment of the phagosome to combat phagocytic superoxide. We propose a model to account for the various properties of SodCI and how they contribute to bacterial survival in the phagosome.

Indexed as

AnimalsBacterial ProteinsBrucella abortusDimerizationDisease Models, AnimalFemaleGene DeletionGenetic Complementation TestMiceMice, Inbred BALB CMutagenesis, Site-DirectedPeptide HydrolasesPeriplasmPhagosomesSalmonella Infections, AnimalSalmonella typhimuriumBacterial ProteinsPeptide HydrolasesSuperoxide DismutaseVirulence Factors

Identifiers

PMID17416645
PMCPMC1913369
OpenAlexW2108364179

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.