Evidence map›Paper›PMID 22474366›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2012

Structural and mechanistic analysis of the membrane-embedded glycosyltransferase WaaA required for lipopolysaccharide synthesis.

Helgo Schmidt, Guido Hansen, Sonia Singh, Anna Hanuszkiewicz, Buko Lindner, Koichi Fukase, Ronald W Woodard, Otto Holst, Rolf Hilgenfeld, Uwe Mamat and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
2.9field-weighted citation impact, top 9% 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

26 citing papers in PubMed, 47 citations in OpenAlex.

  1. Review
  2. Article
  3. Cryo-EM analysis ofScience advances · 2024
    Article
  4. Article
  5. Article
  6. Interplays of mutations inFrontiers in cellular and infection microbiology · 2023
    Article
  7. Review
  8. Review
  9. Article
  10. Article
  11. Review
  12. Monotopic Membrane Proteins Join the Fold.Trends in biochemical sciences · 2019
    Review
  13. Article
  14. Review
  15. Review
  16. Article
  17. Article
  18. Article
  19. Bacterial β-Kdo glycosyltransferases represent a new glycosyltransferase family (GT99).Proceedings of the National Academy of Sciences of the United States of America · 2016
    Article
  20. Kdo2 -lipid A: structural diversity and impact on immunopharmacology.Biological reviews of the Cambridge Philosophical Society · 2015
    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

11 authors at 4 institutions in 4 countries.

Helgo SchmidtInstitute of Biochemistry, Center for Structural and Cell Biology in Medicine, University of Lübeck, 23538 Lübeck, Germany.
Guido Hansen
Sonia Singh
Anna Hanuszkiewicz
Buko Lindner
Koichi Fukase
Ronald W Woodard
Otto Holst
Rolf Hilgenfeld
Uwe Mamat
Jeroen R Mesters
Research Center Borstel - Leibniz Lung Center · DEUniversity of Lübeck · DEUniversity of Michigan–Ann Arbor · USOsaka University · JP

Funding

Mechanism of A5P IsomeraseR01AI061531 · NIAID · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI WOODARD, RONALD WESLEY · 2006 to 2010
$1.8M
NIAID NIH HHS R01 AI061531
6 · The paper itself

Abstract

WaaA is a key enzyme in the biosynthesis of LPS, a critical component of the outer envelope of Gram-negative bacteria. Embedded in the cytoplasmic face of the inner membrane, WaaA catalyzes the transfer of 3-deoxy-d-manno-oct-2-ulosonic acid (Kdo) to the lipid A precursor of LPS. Here we present crystal structures of the free and CMP-bound forms of WaaA from Aquifex aeolicus, an ancient Gram-negative hyperthermophile. These structures reveal details of the CMP-binding site and implicate a unique sequence motif (GGS/TX(5)GXNXLE) in Kdo binding. In addition, a cluster of highly conserved amino acid residues was identified which represents the potential membrane-attachment and acceptor-substrate binding site of WaaA. A series of site-directed mutagenesis experiments revealed critical roles for glycine 30 and glutamate 31 in Kdo transfer. Our results provide the structural basis of a critical reaction in LPS biosynthesis and allowed the development of a detailed model of the catalytic mechanism of WaaA.

Indexed as

Amino Acid SequenceBacterial ProteinsBinding SitesBiocatalysisCrystallography, X-RayGlutamic AcidGlycineGlycosyltransferasesGram-Negative BacteriaLipid ALipopolysaccharidesMembrane ProteinsModels, MolecularMolecular Sequence DataMutagenesis, Site-DirectedProtein Interaction Domains and Motifs3-deoxy-D-manno-octulosonate transferaseBacterial ProteinsGlutamic AcidGlycineGlycosyltransferasesLipid ALipopolysaccharidesMembrane ProteinsTransferases

Identifiers

PMID22474366
PMCPMC3341020
OpenAlexW2129029669

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.