Evidence map›Paper›PMID 21965569›Full record

ArticleJournal of bacteriology2011

Probing the Borrelia burgdorferi surface lipoprotein secretion pathway using a conditionally folding protein domain.

Shiyong Chen, Wolfram R Zückert

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.2field-weighted citation impact, top 25% 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

13 citing papers in PubMed, 25 citations in OpenAlex.

  1. Article
  2. Protein Secretion in Spirochetes.Microbiology spectrum · 2019
    Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. The leptospiral outer membrane.Current topics in microbiology and immunology · 2015
    Review
  8. Review
  9. Transmembrane domain of surface-exposed outer membrane lipoprotein RcsF is threaded through the lumen of β-barrel proteins.Proceedings of the National Academy of Sciences of the United States of America · 2014
    Article
  10. Review
  11. Article
  12. Article
  13. 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

2 authors at 1 institution in 1 country.

Shiyong ChenDepartment of Microbiology, Molecular Genetics, and Immunology, University of Kansas Medical Center, 3901 Rainbow Boulevard, Kansas City, KS 66160, USA.
Wolfram R Zückert
University of Kansas Medical Center · US

Funding

Lipoprotein Transport in Borrelia SpirochetesR01AI063261 · NIAID · UNIVERSITY OF KANSAS MEDICAL CENTER · PI ZUECKERT, WOLFRAM R · 2006 to 2010
$1.8M
NIAID NIH HHS R01 AI063261
6 · The paper itself

Abstract

Surface lipoproteins of Borrelia spirochetes are important virulence determinants in the transmission and pathogenesis of Lyme disease and relapsing fever. To further define the conformational secretion requirements and to identify potential lipoprotein translocation intermediates associated with the bacterial outer membrane (OM), we generated constructs in which Borrelia burgdorferi outer surface lipoprotein A (OspA) was fused to calmodulin (CaM), a conserved eukaryotic protein undergoing calcium-dependent folding. Protein localization assays showed that constructs in which CaM was fused to full-length wild-type (wt) OspA or to an intact OspA N-terminal "tether" peptide retained their competence for OM translocation even in the presence of calcium. In contrast, constructs in which CaM was fused to truncated or mutant OspA N-terminal tether peptides were targeted to the periplasmic leaflet of the OM in the presence of calcium but could be flipped to the bacterial surface upon calcium chelation. This indicated that in the absence of an intact tether peptide, unfolding of the CaM moiety was required in order to facilitate OM traversal. Together, these data further support a periplasmic tether peptide-mediated mechanism to prevent premature folding of B. burgdorferi surface lipoproteins. The specific shift in the OM topology of sequence-identical lipopeptides due to a single-variable change in environmental conditions also indicates that surface-bound Borrelia lipoproteins can localize transiently to the periplasmic leaflet of the OM.

Indexed as

Bacterial Secretion SystemsAntigens, SurfaceBacterial Outer Membrane ProteinsBacterial VaccinesBorrelia burgdorferiCalmodulinHumansLipoproteinsLyme DiseaseProtein FoldingProtein Structure, TertiaryProtein TransportAntigens, SurfaceBacterial Outer Membrane ProteinsBacterial Secretion SystemsBacterial VaccinesCalmodulinLipoproteinsOspA protein

Identifiers

PMID21965569
PMCPMC3232903
OpenAlexW2128658016

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.