Evidence map›Paper›PMID 12446631›Full record

ArticleJournal of bacteriology2002

Elimination of channel-forming activity by insertional inactivation of the p13 gene in Borrelia burgdorferi.

Yngve Ostberg, Marija Pinne, Roland Benz, Patricia Rosa, Sven Bergström

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
2.4field-weighted citation impact, top 13% 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

25 citing papers in PubMed, 37 citations in OpenAlex.

  1. Frontiers in cellular and infection microbiology · 2024
    Article
  2. Protein Secretion in Spirochetes.Microbiology spectrum · 2019
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. The role of Borrelia burgdorferi outer surface proteins.FEMS immunology and medical microbiology · 2012
    Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. 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

5 authors at 3 institutions in 3 countries.

Yngve OstbergDepartment of Molecular Biology, Umeå University, Sweden.
Marija Pinne
Roland Benz
Patricia Rosa
Sven Bergström
Umeå University · SENational Institute of Allergy and Infectious Diseases · USUniversity of Würzburg · DE

Funding

Molecular Genetic Basis of the Infectious Cycle of Borrelia burgdorferiZIAAI000917 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI ROSA, PATRICIA A · 2009 to 2023
$13.7M
Molecular Genetics Of Infectious Borrelia BurgdorferiZ01AI000917 · NIAID · NIAID EXTRAMURAL ACTIVITIES · PI ROSA, PATRICIA A · 2002 to 2008
$2.2M
Transformation/Gene Inactivation In Borrelia BurgdorferiZ01AI000549 · NIAID · NIAID EXTRAMURAL ACTIVITIES · PI ROSA, PATRICIA A · 1990 to 2001
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6 · The paper itself

Abstract

P13 is a chromosomally encoded 13-kDa integral outer membrane protein of the Lyme disease agent, Borrelia burgdorferi. The aim of this study was to investigate the function of the P13 protein. Here, we inactivated the p13 gene by targeted mutagenesis and investigated the porin activities of outer membrane proteins by using lipid bilayer experiments. Channel-forming activity was lost in the p13 mutant compared to wild-type B. burgdorferi, indicating that P13 may function as a porin. We purified native P13 to homogeneity by fast performance liquid chromatography and demonstrated that pure P13 has channel-forming activity with a single-channel conductance in 1 M KCl of 3.5 nS, the same as the porin activity that was lost in the p13 mutant. Further characterization of the channel formed by P13 suggested that it is cation selective and voltage independent. In addition, no major physiological effects of the inactivated p13 gene could be detected under normal growth conditions. The inactivation of p13 is the first reported inactivation of a gene encoding an integral outer membrane protein in B. burgdorferi. Here, we describe both genetic and biophysical experiments indicating that P13 in B. burgdorferi is an outer membrane protein with porin activity.

Indexed as

Borrelia burgdorferiGenes, BacterialIon ChannelsMutagenesis, InsertionalPlasmidsPorinsProtein Structure, SecondaryIon ChannelsPorins

Identifiers

PMID12446631
PMCPMC135472
OpenAlexW2035003519

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.