Evidence map›Paper›PMID 25122461›Full record

ArticleeLife2014

Prion propagation can occur in a prokaryote and requires the ClpB chaperone.

Andy H Yuan, Sean J Garrity, Entela Nako, Ann Hochschild

Open access · goldAbstract read
In one paragraph

Article in eLife, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
2.1field-weighted citation impact, top 12% 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

26 citing papers in PubMed, 38 citations in OpenAlex.

  1. Chemical reviews · 2026
    Review
  2. Article
  3. Review
  4. Review
  5. Measuring prion propagation in single bacteria elucidates a mechanism of loss.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  6. Article
  7. Protein aggregation in bacteria.FEMS microbiology reviews · 2020
    Review
  8. Article
  9. A bacteria-based genetic assay detects prion formation.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. A bacterial global regulator forms a prion.Science (New York, N.Y.) · 2017
    Article
  16. Prion-Like Domains in Phagobiota.Frontiers in microbiology · 2017
    Article
  17. 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

4 authors at 2 institutions in 1 country.

Andy H YuanDepartment of Microbiology and Immunobiology, Harvard Medical School, Boston, United States Whitehead Institute for Biomedical Research, Cambridge, United States.
Sean J GarrityDepartment of Microbiology and Immunobiology, Harvard Medical School, Boston, United States.
Entela NakoDepartment of Microbiology and Immunobiology, Harvard Medical School, Boston, United States.
Ann HochschildDepartment of Microbiology and Immunobiology, Harvard Medical School, Boston, United States ahochschild@hms.harvard.edu.
Harvard University · USWhitehead Institute for Biomedical Research · US

Funding

PRE-DOCTORAL TRAINING IN THE BIOLOGICAL SCIENCEST32GM007287 · NIGMS · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI BELL, STEPHEN P., KEATING, AMY E · 1985 to 2019
$40.8M
A new genetic approach for studying prions and other pathogenic protein aggregateDP1OD003806 · OD · HARVARD MEDICAL SCHOOL · PI HOCHSCHILD, ANN · 2008 to 2011
$3.4M
A new genetic approach for studying prions and other pathogenic protein aggregateDP1AI104284 · NIAID · HARVARD MEDICAL SCHOOL · PI HOCHSCHILD, ANN · 2012 to 2012
$839k
NIAID NIH HHS DP1 AI104284NIGMS NIH HHS T32 GM007287NIH HHS DP1 OD003806NIH HHS OD003806
6 · The paper itself

Abstract

Prions are self-propagating protein aggregates that are characteristically transmissible. In mammals, the PrP protein can form a prion that causes the fatal transmissible spongiform encephalopathies. Prions have also been uncovered in fungi, where they act as heritable, protein-based genetic elements. We previously showed that the yeast prion protein Sup35 can access the prion conformation in Escherichia coli. Here, we demonstrate that E. coli can propagate the Sup35 prion under conditions that do not permit its de novo formation. Furthermore, we show that propagation requires the disaggregase activity of the ClpB chaperone. Prion propagation in yeast requires Hsp104 (a ClpB ortholog), and prior studies have come to conflicting conclusions about ClpB's ability to participate in this process. Our demonstration of ClpB-dependent prion propagation in E. coli suggests that the cytoplasmic milieu in general and a molecular machine in particular are poised to support protein-based heredity in the bacterial domain of life.

Indexed as

Endopeptidase ClpEscherichia coliEscherichia coli ProteinsHeat-Shock ProteinsImmunoblottingMicroscopy, FluorescenceMolecular ChaperonesMutationPeptide Termination FactorsPrionsProtein StabilitySaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsSodium Dodecyl SulfateClpB protein, E coliEndopeptidase ClpEscherichia coli ProteinsHeat-Shock ProteinsHsP104 protein, S cerevisiaeMolecular ChaperonesNew1 protein, S cerevisiaePeptide Termination FactorsPrionsSaccharomyces cerevisiae ProteinsSodium Dodecyl SulfateSUP35 protein, S cerevisiaechaperonesClpBprionsprotein-based hereditySup35

Identifiers

PMID25122461
PMCPMC4150125
OpenAlexW2111168062

What OpenQuestion holds

Textmetadata
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.