Evidence map›Paper›PMID 17593967›Full record

ArticlePloS one2007

Expression, processing, and localization of PmpD of Chlamydia trachomatis Serovar L2 during the chlamydial developmental cycle.

Andrey O Kiselev, Walter E Stamm, John R Yates, Mary F Lampe

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
4.4field-weighted citation impact, top 5% 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

29 citing papers in PubMed, 48 citations in OpenAlex.

  1. Addressing Challenges inMedicina (Kaunas, Lithuania) · 2024
    Review
  2. Article
  3. The secreted host-cell protein clusterin interacts with PmpD and promotesFrontiers in cellular and infection microbiology · 2024
    Article
  4. Heterologous Display ofMembranes · 2023
    Article
  5. Whole Genome Sequencing of aCurrent issues in molecular biology · 2023
    Article
  6. Article
  7. International journal of molecular sciences · 2020
    Article
  8. Article
  9. Chlamydial Infection From Outside to Inside.Frontiers in microbiology · 2019
    Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. 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

4 authors at 2 institutions in 1 country.

Andrey O KiselevDepartment of Laboratory Medicine, University of Washington, Seattle, Washington, United States of America.
Walter E Stamm
John R Yates
Mary F Lampe
University of Washington · USScripps Research Institute · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWhile families of polymorphic membrane protein (pmp) genes have been identified in several Chlamydia species, their function remains mostly unknown. These proteins are of great interest, however, because of their location in the outer membrane and possible role in chlamydial virulence. METHODOLOGY/PRINCIPAL FINDING: We analyzed the relative transcription of the pmpD gene, a member of the pmp gene family in C. trachomatis serovar L2, and its protein product translation and processing during the chlamydial developmental cycle. By real-time reverse transcription polymerase chain reaction, the pmpD gene was found to be upregulated at 16 to 24 four hours after infection. Using polyclonal antibodies generated against the predicted passenger domain of PmpD, we demonstrated that it is initially localized on the surface of reticulate bodies, followed by its secretion outside Chlamydia starting at 24 hours after infection. In elementary bodies, we found a approximately 157 kDa PmpD only inside the cell. Both events, the upregulation of pmpD gene transcription and PmpD protein processing and secretion, are coincidental with the period of replication and differentiation of RBs into EBs. We also demonstrated that, in the presence of penicillin, the cleavage and secretion of the putative passenger domain was suppressed. CONCLUSION/SIGNIFICANCE: Our results are in agreement with the general concept that PmpD is an autotransporter protein which is post-translationally processed and secreted in the form of the putative passenger domain outside Chlamydia at mid- to- late point after infection, coinciding with the development of RBs into EBs.

Indexed as

Gene Expression Regulation, BacterialGene Expression Regulation, DevelopmentalProtein Processing, Post-TranslationalAnimalsBacterial ProteinsBlotting, WesternChlamydia InfectionsChlamydia trachomatisCloning, MolecularFluorescent Antibody TechniqueGoatsHumansMembrane ProteinsRabbitsRecombinant ProteinsReverse Transcriptase Polymerase Chain ReactionBacterial ProteinsMembrane Proteinspolymorphic membrane protein D, Chlamydia trachomatisRecombinant ProteinsRNA, Messenger

Identifiers

PMID17593967
PMCPMC1892801
OpenAlexW2002457698

What OpenQuestion holds

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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.