Evidence map›Paper›PMID 16621820›Full record

ArticleJournal of bacteriology2006

Mutation of waaC, encoding heptosyltransferase I in Campylobacter jejuni 81-176, affects the structure of both lipooligosaccharide and capsular carbohydrate.

Margaret I Kanipes, Erzsebet Papp-Szabo, Patricia Guerry, Mario A Monteiro

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
7.1field-weighted citation impact, top 3% 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

31 citing papers in PubMed, 64 citations in OpenAlex.

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  16. The sweet tooth of bacteria: common themes in bacterial glycoconjugates.Microbiology and molecular biology reviews : MMBR · 2014
    Review
  17. Article
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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

4 authors at 3 institutions in 2 countries.

Margaret I KanipesDepartment of Chemistry, North Carolina Agricultural and Technical State University, Greensboro, North Carolina 27411, USA.
Erzsebet Papp-Szabo
Patricia Guerry
Mario A Monteiro
University of Guelph · CANaval Medical Research Command · USNorth Carolina Agricultural and Technical State University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Campylobacter jejuni 81-176 lipooligosaccharide (LOS) is composed of two covalently linked domains: lipid A, a hydrophobic anchor, and a nonrepeating core oligosaccharide, consisting of an inner and outer core region. We report the isolation and characterization of the deepest rough C. jejuni 81-176 mutant by insertional mutagenesis into the waaC gene, encoding heptosyltransferase I that catalyzes the transfer of the first L-glycero-D-manno-heptose residue to 3-deoxy-D-manno-octulosonic residue (Kdo)-lipid A. Tricine gel electrophoresis, followed by silver staining, showed that site-specific mutation in the waaC gene resulted in the expression of a severely truncated LOS compared to wild-type strain 81-176. Gas-liquid chromatography-mass spectrometry and nuclear magnetic resonance spectroscopy showed that the waaC LOS species lacked all sugars distal to Kdo-lipid A. Parallel structural studies of the capsular polysaccharides of the wild-type strain 81-176 and waaC mutant revealed loss of the 3-O-methyl group in the waaC mutant. Complementation of the C. jejuni mutant by insertion of the wild-type C. jejuni waaC gene into a chromosomal locus resulted in LOS and capsular structures identical to those expressed in the parent strain. We also report here the presence of O-methyl phosphoramidate in wild-type strain 81-176 capsular polysaccharide.

Indexed as

Bacterial CapsulesCampylobacter jejuniCarbohydrate MetabolismCarbohydratesDNA, BacterialElectrophoresis, Gel, Two-DimensionalFlavonoidsGastroenteritisGlycosyltransferasesGuillain-Barre SyndromeLipopolysaccharidesMagnetic Resonance SpectroscopyMolecular Sequence DataMutagenesis, InsertionalVirulenceCarbohydratesDNA, BacterialFlavonoidsGlycosyltransferasesheptosyltransferaselipid-linked oligosaccharidesLipopolysaccharidestricin

Identifiers

PMID16621820
PMCPMC1447440
OpenAlexW2149725254

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.