Evidence map›Paper›PMID 20410291›Full record

ArticleThe Journal of biological chemistry2010

A membrane-located glycosyltransferase complex required for biosynthesis of the D-galactan I lipopolysaccharide O antigen in Klebsiella pneumoniae.

Veronica Kos, Chris Whitfield

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
0.8field-weighted citation impact, top 28% 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

17 citing papers in PubMed, 35 citations in OpenAlex.

  1. Article
  2. O-antigen polysaccharides inMicrobiology and molecular biology reviews : MMBR · 2025
    Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Lipopolysaccharide O-antigens-bacterial glycans made to measure.The Journal of biological chemistry · 2020
    Review
  8. Article
  9. The Journal of biological chemistry · 2019
    Article
  10. Article
  11. Periplasmic depolymerase provides insight into ABC transporter-dependent secretion of bacterial capsular polysaccharides.Proceedings of the National Academy of Sciences of the United States of America · 2018
    Article
  12. Article
  13. Single polysaccharide assembly protein that integrates polymerization, termination, and chain-length quality control.Proceedings of the National Academy of Sciences of the United States of America · 2017
    Article
  14. Article
  15. Article
  16. Article
  17. 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

2 authors at 1 institution in 1 country.

Veronica KosDepartment of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario N1G 2W1, Canada.
Chris Whitfield
University of Guelph · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

D-galactan I is a polysaccharide with the disaccharide repeat unit structure [-->3-beta-D-Galf-(1-->3)-alpha-D-Galp-(1-->]. This glycan represents the lipopolysaccharide O antigen found in many Gram-negative bacteria, including several Klebsiella pneumoniae O serotypes. The polysaccharide is synthesized in the cytoplasm prior to its export via an ATP-binding cassette transporter. Sequence analysis predicts three galactosyltransferases in the D-galactan I genetic locus. They are WbbO (belonging to glycosyltransferase (GT) family 4), WbbM (GT-family 8), and WbbN (GT-family 2). The WbbO and WbbM proteins are each predicted to contain two domains, with the GT modules located toward their C termini. The N-terminal domains of WbbO and WbbM exhibit no similarity to proteins with known function. In vivo complementation assays suggest that all three glycosyltransferases are required for D-galactan I biosynthesis. Using a bacterial two-hybrid system and confirmatory co-purification strategies, evidence is provided for protein-protein interactions among the glycosyltransferases, creating a membrane-located enzyme complex dedicated to d-galactan I biosynthesis.

Indexed as

Amino Acid SequenceATP-Binding Cassette TransportersCell MembraneGalactansKlebsiella pneumoniaeLipopolysaccharidesMolecular Sequence DataO AntigensPolymersPolysaccharidesProtein Structure, SecondaryProtein Structure, TertiarySequence Analysis, DNASubcellular FractionsTwo-Hybrid System TechniquesATP-Binding Cassette TransportersGalactansLipopolysaccharidesO AntigensPolymersPolysaccharides

Identifiers

PMID20410291
PMCPMC2885245
OpenAlexW2052335522

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.