Evidence map›Paper›PMID 20199597›Full record

ArticleMolecular microbiology2010

Identification of residues within ligand-binding domain 1 (LBD1) of the Borrelia burgdorferi OspC protein required for function in the mammalian environment.

Christopher G Earnhart, Delacy V Leblanc, Katie E Alix, Daniel C Desrosiers, Justin D Radolf, Richard T Marconi

Open access · greenAbstract read
In one paragraph

Article in Molecular microbiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed
3.4field-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

46 citing papers in PubMed, 65 citations in OpenAlex.

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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

6 authors at 2 institutions in 1 country.

Christopher G EarnhartDepartment of Microbiology and Immunology, Medical College of Virginia at Virginia Commonwealth University, Richmond, VA, USA.
Delacy V Leblanc
Katie E Alix
Daniel C Desrosiers
Justin D Radolf
Richard T Marconi
Virginia Commonwealth University Medical Center · USUConn Health · US

Funding

RpoS Regulation of Borrelia burgdorferi Genes in vivoR01AI029735 · NIAID · UNIVERSITY OF TEXAS SW MED CTR/DALLAS · PI CAIMANO, MELISSA J, RADOLF, JUSTIN D · 1990 to 2022
$10.7M
Chimeric epitope based vaccines for tick borne infectionsR01AI141801 · NIAID · VIRGINIA COMMONWEALTH UNIVERSITY · PI MARCONI, RICHARD T · 2019 to 2022
$2.5M
The role of OspC in Borrelia pathogenesisR56AI067830 · NIAID · VIRGINIA COMMONWEALTH UNIVERSITY · PI MARCONI, RICHARD T · 2008 to 2009
$721k
RpoS Regulation of Borrelia burgdorferi Genes in vivoR56AI029735 · NIAID · UNIVERSITY OF CONNECTICUT SCH OF MED/DNT · PI RADOLF, JUSTIN D · 2012 to 2012
$536k
NIAID NIH HHS AI-29735NIAID NIH HHS AI-67830NIAID NIH HHS R01 AI029735NIAID NIH HHS R01 AI141801NIAID NIH HHS R56 AI029735NIAID NIH HHS R56 AI067830
6 · The paper itself

Abstract

Borrelia burgdorferi outer surface protein C (ospC) is required for the establishment of infection in mammals. However, its precise function remains controversial. The biologically active form of OspC appears to be a homodimer. Alpha helix 1 and 1' of the apposing monomers form a solvent-accessible pocket at the dimeric interface that presents a putative ligand-binding domain (LBD1). Here we employ site-directed and allelic-exchange mutagenesis to test the hypothesis that LBD1 is a determinant of OspC function in the mammalian environment. Substitution of residues K60, E61 and E63 which line LBD1 resulted in the loss of infectivity or influenced dissemination. Analyses of the corresponding recombinant proteins demonstrated that the loss of function was not due to structural perturbation, impaired dimer formation or the loss of plasminogen binding. This study is the first to assess the involvement of individual residues and domains of OspC in its in vivo function. The data support the hypothesis that OspC interacts with a mammalian derived ligand that is critical for survival during early infection. These results shed new light on the structure-functions relationships of OspC and challenge existing hypotheses regarding OspC function in mammals.

Indexed as

Amino Acid SubstitutionAnimalsAntigens, BacterialBacterial Outer Membrane ProteinsBinding SitesBorrelia burgdorferiDimerizationGene Knockout TechniquesMiceMice, Inbred C3HModels, MolecularMutagenesis, Site-DirectedMutant ProteinsPlasminogenProtein BindingProtein Structure, QuaternaryAntigens, BacterialBacterial Outer Membrane ProteinsMutant ProteinsOspC proteinPlasminogenVirulence Factors

Identifiers

PMID20199597
PMCPMC2917209
OpenAlexW2038264912

What OpenQuestion holds

Textmetadata
LicenceTDM
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.