Evidence map›Paper›PMID 23623732›Full record

ArticleStructure (London, England : 1993)2013

Wzi is an outer membrane lectin that underpins group 1 capsule assembly in Escherichia coli.

Simon R Bushell, Iain L Mainprize, Martin A Wear, Hubing Lou, Chris Whitfield, James H Naismith

Open access · hybridAbstract read
In one paragraph

Article in Structure (London, England : 1993), 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed
5.1field-weighted citation impact, top 5% 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

48 citing papers in PubMed, 82 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Carbapenem-ResistantAntibiotics (Basel, Switzerland) · 2026
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  6. Overcoming phagocytosis resistance of hypervirulentMicrobial cell (Graz, Austria) · 2026
    Article
  7. O-antigen polysaccharides inMicrobiology and molecular biology reviews : MMBR · 2025
    Review
  8. Article
  9. Article
  10. Article
  11. The making of hypervirulent Klebsiella pneumoniae.Journal of clinical laboratory analysis · 2022
    Review
  12. What Glues the Glue to the Cell Surface?Journal of bacteriology · 2022
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 2 countries.

Simon R BushellBiomedical Sciences Research Complex, University of St Andrews, St Andrews KY16 9ST, UK.
Iain L Mainprize
Martin A Wear
Hubing Lou
Chris Whitfield
James H Naismith
University of St Andrews · GBUniversity of Guelph · CAUniversity of Edinburgh · GB

Funding

Wellcome Trust 081862Wellcome Trust 100209
6 · The paper itself

Abstract

Many pathogenic bacteria encase themselves in a polysaccharide capsule that provides a barrier to the physical and immunological challenges of the host. The mechanism by which the capsule assembles around the bacterial cell is unknown. Wzi, an integral outer-membrane protein from Escherichia coli, has been implicated in the formation of group 1 capsules. The 2.6 Å resolution structure of Wzi reveals an 18-stranded β-barrel fold with a novel arrangement of long extracellular loops that blocks the extracellular entrance and a helical bundle that plugs the periplasmic end. Mutagenesis shows that specific extracellular loops are required for in vivo capsule assembly. The data show that Wzi binds the K30 carbohydrate polymer and, crucially, that mutants functionally deficient in vivo show no binding to K30 polymer in vitro. We conclude that Wzi is a novel outer-membrane lectin that assists in the formation of the bacterial capsule via direct interaction with capsular polysaccharides.

Indexed as

Antigens, SurfaceBacterial CapsulesBacterial Outer Membrane ProteinsEscherichia coliEscherichia coli ProteinsLectinsPhylogenyProtein ConformationProtein FoldingAntigens, SurfaceBacterial Outer Membrane ProteinsEscherichia coli ProteinsLectinsWzi protein, E coli

Identifiers

PMID23623732
PMCPMC3791409
OpenAlexW2027010205

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.