Evidence map›Paper›PMID 25422302›Full record

ArticleJournal of bacteriology2015

Bordetella parapertussis PagP mediates the addition of two palmitates to the lipopolysaccharide lipid A.

L E Hittle, J W Jones, A M Hajjar, R K Ernst, A Preston

Open access · bronzeAbstract read
In one paragraph

Article in Journal of bacteriology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
0.7field-weighted citation impact, top 32% 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

8 citing papers in PubMed, 10 citations in OpenAlex.

  1. A critical role forProceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  2. Determining theFrontiers in microbiology · 2025
    Article
  3. Review
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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

5 authors at 3 institutions in 2 countries.

L E HittleDepartment of Microbial Pathogenesis, University of Maryland School of Dentistry, Baltimore, Maryland, USA.
J W JonesDepartment of Pharmaceutical Sciences, University of Maryland School of Pharmacy, Baltimore, Maryland, USA.
A M HajjarDepartment of Comparative Medicine, School of Medicine, University of Washington, Seattle, Washington, USA.
R K ErnstDepartment of Microbial Pathogenesis, University of Maryland School of Dentistry, Baltimore, Maryland, USA rkernst@umaryland.edu a.preston@bath.ac.uk.
A PrestonDepartment of Biology and Biochemistry, University of Bath, Bath, United Kingdom rkernst@umaryland.edu a.preston@bath.ac.uk.
University of Maryland, Baltimore · USUniversity of Bath · GBUniversity of Washington · US

Funding

Variation in Human Innate ImmunityU54AI057141 · NIAID · UNIVERSITY OF WASHINGTON · PI COOKSON, BRAD T · 2003 to 2013
$102.3M
NIAID NIH HHS 1U54 AI57141NIAID NIH HHS U54 AI057141
6 · The paper itself

Abstract

Bordetella bronchiseptica PagP (PagPBB) is a lipid A palmitoyl transferase that is required for resistance to antibody-dependent complement-mediated killing in a murine model of infection. B. parapertussis contains a putative pagP homolog (encoding B. parapertussis PagP [PagPBPa]), but its role in the biosynthesis of lipid A, the membrane anchor of lipopolysaccharide (LPS), has not been investigated. Mass spectrometry analysis revealed that wild-type B. parapertussis lipid A consists of a heterogeneous mixture of lipid A structures, with penta- and hexa-acylated structures containing one and two palmitates, respectively. Through mutational analysis, we demonstrate that PagPBPa is required for the modification of lipid A with palmitate. While PagPBB transfers a single palmitate to the lipid A C-3' position, PagPBPa transfers palmitates to the lipid A C-2 and C-3' positions. The addition of two palmitate acyl chains is unique to B. parapertussis. Mutation of pagPBPa resulted in a mutant strain with increased sensitivity to antimicrobial peptide killing and decreased endotoxicity, as evidenced by reduced proinflammatory responses via Toll-like receptor 4 (TLR4) to the hypoacylated LPS. Therefore, PagP-mediated modification of lipid A regulates outer membrane function and may be a means to modify interactions between the bacterium and its human host during infection.

Indexed as

AcyltransferasesBordetella parapertussisDNA Mutational AnalysisLipid AMass SpectrometryPalmitatesAcyltransferasesLipid APalmitates

Identifiers

PMID25422302
PMCPMC4285993
OpenAlexW1968133795

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.