Evidence map›Paper›PMID 26517116›Full record

ArticlePLoS neglected tropical diseases2015

Fine Mapping of the Interaction between C4b-Binding Protein and Outer Membrane Proteins LigA and LigB of Pathogenic Leptospira interrogans.

Leandro C D Breda, Ching-Lin Hsieh, Mónica M Castiblanco Valencia, Ludmila B da Silva, Angela S Barbosa, Anna M Blom, Yung-Fu Chang, Chang Yung-Fu, Lourdes Isaac

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in PLoS neglected tropical diseases, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.6field-weighted citation impact, top 12% 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

18 citing papers in PubMed, 34 citations in OpenAlex.

  1. Article
  2. Diverse Functions of C4b-Binding Protein in Health and Disease.Journal of immunology (Baltimore, Md. : 1950) · 2023
    Review
  3. Screening of Surface-Exposed Lipoproteins ofFrontiers in microbiology · 2022
    Article
  4. Review
  5. Article
  6. Deciphering the Role ofFrontiers in immunology · 2021
    Article
  7. A Review on Host-Frontiers in cellular and infection microbiology · 2021
    Review
  8. Review
  9. Article
  10. Vaccine potential of LenA and LcpA proteins ofIranian journal of microbiology · 2019
    Article
  11. Cytokine Profile in Early Infection byJournal of immunology research · 2019
    Article
  12. Role of Murine Complement Component C5 in AcuteFrontiers in cellular and infection microbiology · 2018
    Article
  13. Article
  14. Article
  15. Article
  16. PathogenicFrontiers in microbiology · 2017
    Article
  17. Complement Evasion by PathogenicFrontiers in immunology · 2016
    Review
  18. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 4 institutions in 3 countries.

Leandro C D BredaDepartment of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
Ching-Lin HsiehDepartment of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America.
Mónica M Castiblanco ValenciaDepartment of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
Ludmila B da SilvaLaboratory of Bacteriology, Institute Butantan, São Paulo, Brazil.
Angela S BarbosaLaboratory of Bacteriology, Institute Butantan, São Paulo, Brazil.
Anna M BlomDepartment of Translational Medicine, Division of Medical Protein Chemistry, Lund University, Malmo, Sweden.
Yung-Fu Chang
Chang Yung-FuDepartment of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America.
Lourdes IsaacDepartment of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
Universidade de São Paulo · BRCornell University · USInstituto Butantan · BRLund University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The complement system consists of more than 40 proteins that participate in the inflammatory response and in pathogen killing. Complement inhibitors are necessary to avoid the excessive consumption and activation of this system on host cells. Leptospirosis is a worldwide zoonosis caused by spirochetes from the genus Leptospira. Pathogenic leptospires are able to escape from complement activation by binding to host complement inhibitors Factor H [FH] and C4b-binding protein (C4BP) while non-pathogenic leptospires are rapidly killed in the presence of fresh serum. In this study, we demonstrate that complement control protein domains (CCP) 7 and 8 of C4BP α-chain interact with the outer membrane proteins LcpA, LigA and LigB from the pathogenic leptospire L. interrogans. The interaction between C4BP and LcpA, LigA and LigB is sensitive to ionic strength and inhibited by heparin. We fine mapped the LigA and LigB domains involved in its binding to C4BP and heparin and found that both interactions are mediated through the bacterial immunoglobulin-like (Big) domains 7 and 8 (LigA7-8 and LigB7-8) of both LigA and LigB and also through LigB9-10. Therefore, C4BP and heparin may share the same binding sites on Lig proteins.

Indexed as

Host-Pathogen InteractionsProtein Interaction MappingBacterial Outer Membrane ProteinsComplement C4b-Binding ProteinHumansLeptospira interrogansBacterial Outer Membrane ProteinsComplement C4b-Binding Protein

Identifiers

PMID26517116
PMCPMC4627802
OpenAlexW1931011929

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.