Evidence map›Paper›PMID 20851898›Full record

ArticleJournal of bacteriology2010

Characterization of Pgp3, a Chlamydia trachomatis plasmid-encoded immunodominant antigen.

Ding Chen, Lei Lei, Chunxue Lu, Ahmad Galaleldeen, P John Hart, Guangming Zhong

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers.

0numbers the graph read from it
0cells of the map it votes in
55citing 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

55 citing papers in PubMed, 79 citations in OpenAlex.

  1. Risk factors associated with IgG seropersistence toEpidemiology and infection · 2025
    Article
  2. Article
  3. Article
  4. Article
  5. Protective Immunity againstInternational journal of molecular sciences · 2023
    Article
  6. Article
  7. Article
  8. Plasmid-mediated virulence inFrontiers in cellular and infection microbiology · 2023
    Review
  9. Association between serumFrontiers in public health · 2023
    Article
  10. Article
  11. Efficacy of Pgp3 vaccination forFrontiers in immunology · 2022
    Article
  12. Review
  13. Review
  14. Review
  15. Article
  16. Article
  17. Frontiers in microbiology · 2020
    Article
  18. The multiple functions of the numerousMicrobial cell (Graz, Austria) · 2019
    Review
  19. The Plasmid-Encoded pGP3 PromotesInfection and immunity · 2019
    Article
  20. 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

6 authors at 2 institutions in 1 country.

Ding ChenDepartment of Microbiology and Immunology, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA.
Lei Lei
Chunxue Lu
Ahmad Galaleldeen
P John Hart
Guangming Zhong
Geriatric Research Education and Clinical Center · USThe University of Texas Health Science Center at San Antonio · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Human antibody recognition of Chlamydia trachomatis plasmid-encoded Pgp3 protein is dependent on the native conformation of Pgp3. The structural basis for the conformation dependence and the function of Pgp3 remain unknown. Here, we report that Pgp3 trimerization is required for the recognition of Pgp3 by human antibodies. In a native polyacrylamide gel, Pgp3 purified from a bacterial expression system migrated as stable trimers that were dissociated into monomers only by treatment with urea or sodium dodecyl sulfate (SDS) but not nonionic detergents. Human antibodies recognized trimeric but not monomeric Pgp3, suggesting that Pgp3 is presented to the human immune system as trimers during C. trachomatis infection. The endogenous Pgp3 secreted into the chlamydial outer membrane complex or host cell cytosol is always trimerized. Intact Pgp3 trimers were eluted from the outer membrane complex by a combination of nonionic detergents with reducing agents but not by the presence of either alone. These observations have provided important information for further understanding the role of Pgp3 in chlamydial pathogenesis and potentially optimizing Pgp3 as a subunit vaccine candidate antigen.

Indexed as

PlasmidsAntibodies, BacterialAntigens, BacterialBacterial ProteinsChlamydia trachomatisElectrophoresis, Polyacrylamide GelHeLa CellsHumansImmunodominant EpitopesProtein MultimerizationAntibodies, BacterialAntigens, BacterialBacterial ProteinsImmunodominant Epitopespgp3 protein, Chlamydia

Identifiers

PMID20851898
PMCPMC2976438
OpenAlexW2128901243

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.