Evidence map›Paper›PMID 19047350›Full record

ArticleJournal of bacteriology2009

Contribution of the periplasmic chaperone Skp to efficient presentation of the autotransporter IcsA on the surface of Shigella flexneri.

Jennifer K Wagner, Jason E Heindl, Andrew N Gray, Sumita Jain, Marcia B Goldberg

Abstract 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 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing 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

36 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Bacterial Secretion Systems: An Overview.Microbiology spectrum · 2016
    Review
  8. Outer membrane protein biogenesis in Gram-negative bacteria.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2015
    Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. The Bam machine: a molecular cooper.Biochimica et biophysica acta · 2012
    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

5 authors.

Jennifer K WagnerDivision of Infectious Diseases, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Cambridge, Massachusetts 02139, USA.
Jason E Heindl
Andrew N Gray
Sumita Jain
Marcia B Goldberg

Funding

INFECTIOUS DISEASE AND BASIC MICROBIOLOGICAL MECHANISMST32AI007061 · NIAID · MASSACHUSETTS GENERAL HOSPITAL · PI Marcia B Goldberg · 1985 to 2026
$12.1M
MECHANISM AND FUNCTION OF UNIPOLARITY OF SHIGELLA ICSAR01AI035817 · NIAID · YESHIVA UNIVERSITY · PI GOLDBERG, MARCIA B · 1994 to 2009
$3.9M
Autotrasporter periplasmic chaperones in ShigellaR21AI061073 · NIAID · MASSACHUSETTS GENERAL HOSPITAL · PI GOLDBERG, MARCIA B · 2004 to 2005
$524k
NIAID NIH HHS AI035817NIAID NIH HHS AI061073NIAID NIH HHS R01 AI035817NIAID NIH HHS R21 AI061073NIAID NIH HHS T32 AI007061NIAID NIH HHS T32 AI07061
6 · The paper itself

Abstract

IcsA is an outer membrane protein in the autotransporter family that is required for Shigella flexneri pathogenesis. Following its secretion through the Sec translocon, IcsA is incorporated into the outer membrane in a process that depends on YaeT, a component of an outer membrane beta-barrel insertion machinery. We investigated the role of the periplasmic chaperone Skp in IcsA maturation. Skp is required for the presentation of the mature amino terminus (alpha-domain) of IcsA on the bacterial surface and contributes to cell-to-cell spread of S. flexneri in cell culture. A mutation in skp does not prevent the insertion of the beta-barrel into the outer membrane, suggesting that the primary role of Skp is the folding of the IcsA alpha-domain. In addition, the requirement for skp can be partially bypassed by disrupting icsP, an ortholog of Escherichia coli ompT, which encodes the protease that processes IcsA between the mature amino terminus and the beta-barrel outer membrane anchor. These findings are consistent with a model in which Skp plays a critical role in the chaperoning of the alpha-domain of IcsA during transit through the periplasm.

Indexed as

Bacterial ProteinsBlotting, WesternDNA-Binding ProteinsImmunoblottingModels, BiologicalMutationPeriplasmProtein FoldingShigella flexneriTranscription FactorsBacterial ProteinsDNA-Binding ProteinsTranscription FactorsvirG protein, Shigella flexneri

Identifiers

PMID19047350
PMCPMC2632083

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.