Evidence map›Paper›PMID 19001072›Full record

ArticleInfection and immunity2009

Chlamydia trachomatis polymorphic membrane protein D is an oligomeric autotransporter with a higher-order structure.

Kena A Swanson, Lacey D Taylor, Shaun D Frank, Gail L Sturdevant, Elizabeth R Fischer, John H Carlson, William M Whitmire, Harlan D Caldwell

Abstract read
In one paragraph

Article in Infection and immunity, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed
3.6field-weighted citation impact, top 8% 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

48 citing papers in PubMed, 80 citations in OpenAlex.

  1. Article
  2. Review
  3. Immunization AgainstVaccines · 2025
    Article
  4. Review
  5. Article
  6. The secreted host-cell protein clusterin interacts with PmpD and promotesFrontiers in cellular and infection microbiology · 2024
    Article
  7. Heterologous Display ofMembranes · 2023
    Article
  8. Article
  9. Molecular pathogenesis ofFrontiers in cellular and infection microbiology · 2023
    Review
  10. Article
  11. Review
  12. Frontiers in microbiology · 2021
    Article
  13. The multiple functions of the numerousMicrobial cell (Graz, Austria) · 2019
    Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Update on Chlamydia trachomatis Vaccinology.Clinical and vaccine immunology : CVI · 2017
    Review
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

8 authors at 2 institutions in 2 countries.

Kena A SwansonLaboratory of Intracellular Parasites, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 903 South 4th St., Hamilton, MT 59840, USA.
Lacey D Taylor
Shaun D Frank
Gail L Sturdevant
Elizabeth R Fischer
John H Carlson
William M Whitmire
Harlan D Caldwell
Institute of Cellular and Intracellular Symbiosis · RUNational Institutes of Health · US

Funding

Infectious Diseases Research Technologies Core - RMLZICAI001052 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI CHERRY, JAMES · 2009 to 2025
$133.3M
Pathogensis of Chlamydial InfectionZIAAI000845 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI CALDWELL, HARLAN D · 2009 to 2022
$14.8M
Chlamydial Immunity and Vaccine DevelopmentZIAAI000672 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI CALDWELL, HARLAN D · 2009 to 2016
$6.8M
Infectious Diseases Research Technologies Core - RMLZ01AI001052 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI HOHMAN, ROBERT · 2008 to 2008
$5.6M
PATHOGENOMICS OF CHLAMYDIAL INFECTIONZ01AI000845 · NIAID · NIAID EXTRAMURAL ACTIVITIES · PI CALDWELL, HARLAN D · 1999 to 2008
$1.6M
MUCOSAL IMMUNITY TO CHLAMYDIAL INFECTIONZ01AI000672 · NIAID · NIAID EXTRAMURAL ACTIVITIES · PI CALDWELL, HARLAN D · 1993 to 2008
$1.4M
Intramural NIH HHS
6 · The paper itself

Abstract

Chlamydia trachomatis is a globally important obligate intracellular bacterial pathogen that is a leading cause of sexually transmitted disease and blinding trachoma. Effective control of these diseases will likely require a preventative vaccine. C. trachomatis polymorphic membrane protein D (PmpD) is an attractive vaccine candidate as it is conserved among C. trachomatis strains and is a target of broadly cross-reactive neutralizing antibodies. We show here that immunoaffinity-purified native PmpD exists as an oligomer with a distinct 23-nm flower-like structure. Two-dimensional blue native-sodium dodecyl sulfate-polyacrylamide gel electrophoresis analyses showed that the oligomers were composed of full-length PmpD (p155) and two proteolytically processed fragments, the p73 passenger domain (PD) and the p82 translocator domain. We also show that PmpD undergoes an infection-dependent proteolytic processing step late in the growth cycle that yields a soluble extended PD (p111) that was processed into a p73 PD and a novel p30 fragment. Interestingly, soluble PmpD peptides possess putative eukaryote-interacting functional motifs, implying potential secondary functions within or distal to infected cells. Collectively, our findings show that PmpD exists as two distinct forms, a surface-associated oligomer exhibiting a higher-order flower-like structure and a soluble form restricted to infected cells. We hypothesize that PmpD is a multifunctional virulence factor important in chlamydial pathogenesis and could represent novel vaccine or drug targets for the control of human chlamydial infections.

Indexed as

Protein MultimerizationBacterial Outer Membrane ProteinsChlamydia trachomatisElectrophoresis, Polyacrylamide GelEpithelial CellsHeLa CellsHumansMicroscopy, ConfocalMicroscopy, Electron, ScanningMicroscopy, Electron, TransmissionPeptide HydrolasesBacterial Outer Membrane ProteinsPeptide Hydrolasespolymorphic membrane protein 21, Chlamydophila pneumoniae

Identifiers

PMID19001072
PMCPMC2612253
OpenAlexW2104099299

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.