Evidence map›Paper›PMID 18824548›Full record

ArticleThe Journal of biological chemistry2008

Deciphering the ligand-binding sites in the Borrelia burgdorferi complement regulator-acquiring surface protein 2 required for interactions with the human immune regulators factor H and factor H-like protein 1.

Corinna Siegel, Johanna Schreiber, Katrin Haupt, Christine Skerka, Volker Brade, Markus M Simon, Brian Stevenson, Reinhard Wallich, Peter F Zipfel, Peter Kraiczy

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
1.4field-weighted citation impact, top 23% 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

38 citing papers in PubMed, 55 citations in OpenAlex.

  1. Article
  2. Review
  3. Borrelia surface proteins: new horizons in Lyme disease diagnosis.Applied microbiology and biotechnology · 2025
    Review
  4. Article
  5. Article
  6. Article
  7. Infection and immunity · 2024
    Article
  8. Subversion of the immune response of human pathogenic spirochetes.Journal of clinical laboratory analysis · 2022
    Review
  9. Lipoproteome screening of the Lyme disease agent identifies inhibitors of antibody-mediated complement killing.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  10. Article
  11. Lyme Disease Pathogenesis.Current issues in molecular biology · 2021
    Review
  12. Review
  13. Article
  14. Review
  15. Article
  16. Review
  17. Article
  18. Elucidating the Immune Evasion Mechanisms ofFrontiers in immunology · 2019
    Article
  19. Review
  20. Eliminating Factor H-Binding Activity ofFrontiers in immunology · 2018
    Article
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

10 authors at 5 institutions in 2 countries.

Corinna SiegelInstitute of Medical Microbiology and Infection Control, University Hospital of Frankfurt, Paul-Ehrlich-Strasse 40, 60596 Frankfurt, Germany.
Johanna Schreiber
Katrin Haupt
Christine Skerka
Volker Brade
Markus M Simon
Brian Stevenson
Reinhard Wallich
Peter F Zipfel
Peter Kraiczy
Goethe University Frankfurt · DELeibniz-Institut für Naturstoff-Forschung und Infektionsbiologie e. V. - Hans-Knöll-Institut (HKI) · DEHeidelberg University · DEMax Planck Institute of Immunobiology and Epigenetics · DEUniversity of Kentucky · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Borrelia burgdorferi, the etiologic agent of Lyme disease, employs sophisticated means to evade killing by its mammalian hosts. One important immune escape mechanism is the inhibition of complement activation mediated by interactions of the host-derived immune regulators factor H (CFH) and factor H-like protein 1 (CFHL1) with borrelial complement regulator-acquiring surface proteins (BbCRASPs). BbCRASP-2 is a distinctive CFH- and CFHL1-binding protein that is produced by serum-resistant B. burgdorferi strains. Here we show that binding of CFH by BbCRASP-2 is due to electrostatic as well as hydrophobic forces. In addition, 14 individual amino acid residues of BbCRASP-2 were identified as being involved in CFH and CFHL1 binding. Alanine substitutions of most of those residues significantly inhibited binding of CFH and/or CFHL1 by recombinant BbCRASP-2 proteins. To conclusively define the effects of BbCRASP-2 residue substitutions on serum sensitivity in the bacterial context, a serum-sensitive Borrelia garinii strain was transformed with plasmids that directed production of either wild-type or mutated BbCRASP-2 proteins. Critical amino acid residues within BbCRASP-2 were identified, with bacteria producing distinct mutant proteins being unable to bind either CFH or CFHL1, showing high levels of complement components C3, C6, and C5b-9 deposited on their surfaces and being highly sensitive to killing by normal serum. Collectively, we mapped a structurally sensitive CFH/CFHL1 binding site within borrelial BbCRASP-2 and identified single amino acid residues potentially involved in the interaction with both complement regulators.

Indexed as

Amino Acid SequenceBacterial ProteinsBinding SitesBorrelia burgdorferiComplement C3b Inactivator ProteinsComplement Factor HDose-Response Relationship, DrugGenetic Complementation TestHumansLigandsMembrane ProteinsMicroscopy, FluorescenceMolecular Sequence DataMutationProtein BindingProtein Structure, TertiaryBacterial ProteinsCFH protein, humanCFHR1 protein, humanComplement C3b Inactivator ProteinsComplement Factor Hcomplement regulator-acquiring surface proteins, Borrelia burgdorferiLigandsMembrane Proteins

Identifiers

PMID18824548
PMCPMC2596382
OpenAlexW2008504899

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.