Evidence map›Paper›PMID 25504321›Full record

ArticleNature structural & molecular biology2015

A coiled-coil domain acts as a molecular ruler to regulate O-antigen chain length in lipopolysaccharide.

Gregor Hagelueken, Bradley R Clarke, Hexian Huang, Anne Tuukkanen, Iulia Danciu, Dmitri I Svergun, Rohanah Hussain, Huanting Liu, Chris Whitfield, James H Naismith

Abstract read
In one paragraph

Article in Nature structural & molecular biology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing 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

35 citing papers in PubMed.

  1. Article
  2. O-antigen polysaccharides inMicrobiology and molecular biology reviews : MMBR · 2025
    Review
  3. FlaG competes with FliS-flagellin complexes for access to FlhA in the flagellar T3SS to controlProceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  4. Article
  5. Identification of a second glycoform of the clinically prevalent O1 antigen fromProceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  6. Article
  7. Article
  8. Review
  9. Frontiers in microbiology · 2022
    Article
  10. Article
  11. An ABC transporter Wzm-Wzt catalyzes translocation of lipid-linked galactan across the plasma membrane in mycobacteria.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  12. Cryo-EM structure of the full-length WzmWzt ABC transporter required for lipid-linked O antigen transport.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  13. Lipoteichoic acid polymer length is determined by competition between free starter units.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  14. Article
  15. Lipopolysaccharide O-antigens-bacterial glycans made to measure.The Journal of biological chemistry · 2020
    Review
  16. Article
  17. The Journal of biological chemistry · 2019
    Article
  18. Article
  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

10 authors.

Gregor Hagelueken *Biomedical Sciences Research Complex, University of St Andrews, St Andrews, Fife, KY16 9ST, UK.
Bradley R Clarke *Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario, N1G 2W1, Canada.
Hexian Huang *Biomedical Sciences Research Complex, University of St Andrews, St Andrews, Fife, KY16 9ST, UK.
Anne TuukkanenEuropean Molecular Biology Laboratory, Hamburg Outstation, Notkestraße 85, 22603 Hamburg, Germany.
Iulia DanciuEuropean Molecular Biology Laboratory, Hamburg Outstation, Notkestraße 85, 22603 Hamburg, Germany.
Dmitri I SvergunEuropean Molecular Biology Laboratory, Hamburg Outstation, Notkestraße 85, 22603 Hamburg, Germany.
Rohanah HussainDiamond Light Source, Didcot, OX11 0QX, UK.
Huanting LiuBiomedical Sciences Research Complex, University of St Andrews, St Andrews, Fife, KY16 9ST, UK.
Chris WhitfieldDepartment of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario, N1G 2W1, Canada.
James H NaismithBiomedical Sciences Research Complex, University of St Andrews, St Andrews, Fife, KY16 9ST, UK.

Funding

Wellcome Trust 081862Wellcome Trust 100209Wellcome Trust WT100209MA
6 · The paper itself

Abstract

Long-chain bacterial polysaccharides have important roles in pathogenicity. In Escherichia coli O9a, a model for ABC transporter-dependent polysaccharide assembly, a large extracellular carbohydrate with a narrow size distribution is polymerized from monosaccharides by a complex of two proteins, WbdA (polymerase) and WbdD (terminating protein). Combining crystallography and small-angle X-ray scattering, we found that the C-terminal domain of WbdD contains an extended coiled-coil that physically separates WbdA from the catalytic domain of WbdD. The effects of insertions and deletions in the coiled-coil region were analyzed in vivo, revealing that polymer size is controlled by varying the length of the coiled-coil domain. Thus, the coiled-coil domain of WbdD functions as a molecular ruler that, along with WbdA:WbdD stoichiometry, controls the chain length of a model bacterial polysaccharide.

Indexed as

Crystallography, X-RayEscherichia coliEscherichia coli ProteinsLipopolysaccharidesMannosyltransferasesO AntigensProtein ConformationScattering, Small AngleEscherichia coli ProteinsLipopolysaccharidesMannosyltransferasesO AntigensWbdA protein, E coliWbdD protein, E coli

Identifiers

PMID25504321
PMCPMC4650267

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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.