Evidence map›Paper›PMID 17682039›Full record

ArticleInfection and immunity2007

Listeriolysin O secreted by Listeria monocytogenes into the host cell cytosol is degraded by the N-end rule pathway.

Pamela Schnupf, Jianmin Zhou, Alexander Varshavsky, Daniel A Portnoy

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
6.2field-weighted citation impact, top 3% 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

31 citing papers in PubMed, 62 citations in OpenAlex.

  1. Article
  2. Article
  3. Bacteria-Based Nanoprobes for Cancer Therapy.International journal of nanomedicine · 2024
    Review
  4. Article
  5. Review
  6. The Journal of biological chemistry · 2019
    Article
  7. Microbiology spectrum · 2018
    Review
  8. Vaccines · 2018
    Review
  9. Article
  10. Listeriolysin O: from bazooka to Swiss army knife.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2017
    Review
  11. Article
  12. Article
  13. Review
  14. Alterations of host cell ubiquitination machinery by pathogenic bacteria.Frontiers in cellular and infection microbiology · 2015
    Review
  15. Review
  16. Review
  17. Review
  18. Article
  19. Review
  20. 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 3 institutions in 2 countries.

Pamela SchnupfDepartment of Molecular and Cell Biology, University of California, Berkeley, CA 94720-3202, USA.
Jianmin Zhou
Alexander Varshavsky
Daniel A Portnoy
California Institute of Technology · USMicrobiology Society · GBUniversity of California, Berkeley · US

Funding

The role of Listeria cyclic-di-AMP during infection and immunityP01AI063302 · NIAID · UNIVERSITY OF CALIFORNIA BERKELEY · PI STANLEY, SARAH A · 2004 to 2025
$45.5M
The Functions, Mechanisms, and Regulation of N-Terminal ArginylationR01GM031530 · NIGMS · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI ALEXANDER J VARSHAVSKY · 1985 to 2026
$14.5M
Listeria Hemolysis and Escape From a VacuoleR01AI027655 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI DANIEL A PORTNOY · 1993 to 2026
$10.1M
Ubiquitin Ligases, Mechanisms and Functions of the N-End Rule PathwayR01DK039520 · NIDDK · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI VARSHAVSKY, ALEXANDER J · 1988 to 2025
$10.0M
MECHANICS AND FUNCTIONS OF THE N-END RULE PATHWAYR37DK039520 · NIDDK · CALIFORNIA INSTITUTE OF TECHNOLOGY · PI VARSHAVSKY, ALEXANDER J · 1998 to 2007
$4.4M
Ubiquitin Ligases, Mechanisms and Functions of the N-End Rule PathwayR56DK039520 · NIDDK · CALIFORNIA INSTITUTE OF TECHNOLOGY · PI VARSHAVSKY, ALEXANDER J · 2008 to 2008
$161k
LISTERIA HEMOLYSIN AND INTRACELLULAR GROWTHR29AI027655 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI PORTNOY, DANIEL A · 1988 to 1992
–
NIAID NIH HHS AI27655NIAID NIH HHS P01 AI063302NIAID NIH HHS R01 AI027655NIDDK NIH HHS DK39520NIDDK NIH HHS R01 DK039520NIDDK NIH HHS R37 DK039520NIDDK NIH HHS R56 DK039520NIGMS NIH HHS R01 GM031530
6 · The paper itself

Abstract

The intracellular pathogen Listeria monocytogenes escapes from a phagosomal compartment into the cytosol by secreting the pore-forming cytolysin listeriolysin O (LLO). During the proliferation of L. monocytogenes bacteria in the mammalian cell cytosol, the secreted LLO is targeted for degradation by the ubiquitin system. We report here that LLO is a substrate of the ubiquitin-dependent N-end rule pathway, which recognizes LLO through its N-terminal Lys residue. Specifically, we demonstrated by reverse-genetic and pharmacological methods that LLO was targeted for degradation by the N-end rule pathway in reticulocyte extracts and mouse NIH 3T3 cells and after its secretion by intracellular bacteria into the mouse cell cytosol. Replacing the N-terminal Lys of LLO with a stabilizing residue such as Val increased the in vivo half-life of LLO but did not strongly affect the intracellular growth or virulence of L. monocytogenes. Nevertheless, this replacement decreased the virulence of L. monocytogenes by nearly twofold, suggesting that a destabilizing N-terminal residue of LLO may stem from positive selection during the evolution of this and related bacteria. A double mutant strain of L. monocytogenes in which upregulated secretion of LLO was combined with a stabilizing N-terminal residue was severely toxic to infected mammalian cells, resulting in reduced intracellular growth of bacteria and an approximately 100-fold-lower level of virulence. In summary, we showed that LLO is degraded by the N-end rule pathway and that the degradation of LLO can reduce the toxicity of L. monocytogenes during infection, a property of LLO that may have been selected for its positive effects on fitness during the evolution of L. monocytogenes.

Indexed as

Amino Acid SubstitutionAnimalsBacterial ToxinsCell ExtractsCell LineColony Count, MicrobialCytosolFemaleHeat-Shock ProteinsHemolysin ProteinsListeria monocytogenesListeriosisLiverLysineMetabolic Networks and PathwaysMiceBacterial ToxinsCell ExtractsHeat-Shock ProteinsHemolysin ProteinshlyA protein, Listeria monocytogenesLysine

Identifiers

PMID17682039
PMCPMC2168281
OpenAlexW2157249590

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.