Evidence map›Paper›PMID 9784523›Full record

ArticleInfection and immunity1998

The major outer membrane protein of Chlamydia psittaci functions as a porin-like ion channel.

S Wyllie, R H Ashley, D Longbottom, A J Herring

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
2.8field-weighted citation impact, top 10% 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

25 citing papers in PubMed, 68 citations in OpenAlex.

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  13. Identification of surface-exposed components of MOMP of Chlamydia trachomatis serovar F.Protein science : a publication of the Protein Society · 2006
    Article
  14. Article
  15. Article
  16. Diagnosis and assessment of trachoma.Clinical microbiology reviews · 2004
    Review
  17. Article
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  19. Article
  20. Chlamydial infection in sheep: immune control versus fetal pathology.Journal of the Royal Society of Medicine · 2001
    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

4 authors at 2 institutions in 1 country.

S WyllieMoredun Research Institute, International Research Centre, Pentland Science Park, Penicuik, Midlothian EH26 0PZ, United Kingdom.
R H Ashley
D Longbottom
A J Herring
Moredun Research Institute · GBUniversity of Edinburgh · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The major outer membrane protein (MOMP) of Chlamydia species shares several biochemical properties with classical porin proteins. Secondary structure analysis by circular dichroism now reveals that MOMP purified from Chlamydia psittaci has a predominantly beta-sheet content (62%), which is also typical of bacterial porins. Can MOMP form functional ion channels? To directly test the "porin channel" hypothesis at the molecular level, the MOMP was reconstituted into planar lipid bilayers, where it gave rise to multibarreled channels, probably trimers, which were modified by an anti-MOMP monoclonal antibody. These observations are consistent with the well-characterized homo-oligomeric nature of MOMP previously revealed by biochemical analysis and with the triple-barreled behavior of other porins. MOMP channels were weakly anion selective (PCl/PK approximately 2) and permeable to ATP. They may therefore be a route by which Chlamydia can take advantage of host nucleoside triphosphates and explain why some anti-MOMP antibodies neutralize infection. These findings have broad implications on the search for an effective chlamydial vaccine to control the significant human and animal diseases caused by these organisms.

Indexed as

Bacterial Outer Membrane ProteinsCell Membrane PermeabilityChlamydophila psittaciDithiothreitolElectrophoresis, Polyacrylamide GelGlucosidesImmunoblottingLipid BilayersPorinsProtein Structure, SecondarySolubilityBacterial Outer Membrane ProteinsDithiothreitolGlucosidesLipid Bilayersoctyl-beta-D-glucosideouter membrane protein, Chlamydia psittaci 6BCPorins

Identifiers

PMID9784523
PMCPMC108649
OpenAlexW2139274060

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.