Evidence map›Paper›PMID 20368351›Full record

ArticleInfection and immunity2010

Temperature-induced changes in the lipopolysaccharide of Yersinia pestis affect plasminogen activation by the pla surface protease.

Marjo Suomalainen, Leandro Araujo Lobo, Klaus Brandenburg, Buko Lindner, Ritva Virkola, Yuriy A Knirel, Andrey P Anisimov, Otto Holst, Timo K Korhonen

Abstract read
In one paragraph

Article in Infection and immunity, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.7field-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

22 citing papers in PubMed, 40 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Plague Outbreak of aVector borne and zoonotic diseases (Larchmont, N.Y.) · 2022
    Article
  5. Article
  6. Lipopolysaccharide of theBiomolecules · 2021
    Review
  7. Biomolecules · 2020
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Fibrinolytic and coagulative activities of Yersinia pestis.Frontiers in cellular and infection microbiology · 2013
    Review
  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

9 authors at 4 institutions in 3 countries.

Marjo SuomalainenDepartment of Biosciences, FIN-00014 University of Helsinki, Helsinki, Finland.
Leandro Araujo Lobo
Klaus Brandenburg
Buko Lindner
Ritva Virkola
Yuriy A Knirel
Andrey P Anisimov
Otto Holst
Timo K Korhonen
University of Helsinki · FIN.D. Zelinsky Institute of Organic Chemistry · RUResearch Center Borstel - Leibniz Lung Center · DEState Research Center for Applied Microbiology and Biotechnology · RU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The Pla surface protease of Yersinia pestis activates human plasminogen and is a central virulence factor in bubonic and pneumonic plague. Pla is a transmembrane beta-barrel protein and member of the omptin family of outer membrane proteases which require bound lipopolysaccharide (LPS) to be proteolytically active. Plasminogen activation and autoprocessing of Pla were dramatically higher in Y. pestis cells grown at 37 degrees C than in cells grown at 20 degrees C; the difference in enzymatic activity by far exceeded the increase in the cellular content of the Pla protein. Y. pestis modifies its LPS structure in response to growth temperature. We purified His(6)-Pla under denaturing conditions and compared various LPS types for their capacity to enhance plasmin formation by His(6)-Pla solubilized in detergent. Reactivation of His(6)-Pla was higher with Y. pestis LPSs isolated from bacteria grown at 37 degrees C than with LPSs from cells grown at 25 degrees C. Lack of O antigens and the presence of the outer core region as well as a lowered level of acylation in LPS were found to enhance the Pla-LPS interaction. Genetic substitution of arginine 138, which is part of a three-dimensional protein motif for binding to lipid A phosphates, decreased both the enzymatic activity of His(6)-Pla and the amount of Pla in Y. pestis cells, suggesting the importance of the Pla-lipid A phosphate interaction. The temperature-induced changes in LPS are known to help Y. pestis to avoid innate immune responses, and our results strongly suggest that they also potentiate Pla-mediated proteolysis.

Indexed as

TemperatureAmino Acid SubstitutionAnimalsBacterial ProteinsHumansLipid ALipopolysaccharidesMutagenesis, Site-DirectedPlasminogenPlasminogen ActivatorsProtein BindingVirulence FactorsYersinia pestisBacterial ProteinsLipid ALipopolysaccharidesPla protease, Yersinia pestisPlasminogenPlasminogen ActivatorsVirulence Factors

Identifiers

PMID20368351
PMCPMC2876559
OpenAlexW2160404680

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.