Evidence map›Paper›PMID 27448207›Full record

ArticlePLoS genetics2016

Prefoldin Promotes Proteasomal Degradation of Cytosolic Proteins with Missense Mutations by Maintaining Substrate Solubility.

Sophie A Comyn, Barry P Young, Christopher J Loewen, Thibault Mayor

Open access · goldAbstract read
In one paragraph

Article in PLoS genetics, 2016. 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
2.1field-weighted citation impact, top 13% 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, 70 citations in OpenAlex.

  1. Article
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  14. Nuclear envelope budding is a response to cellular stress.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  15. Review
  16. Prefoldin Function in Cellular Protein Homeostasis and Human Diseases.Frontiers in cell and developmental biology · 2021
    Review
  17. Article
  18. Article
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  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 1 institution in 1 country.

Sophie A ComynMichael Smith Laboratories, University of British Columbia, Vancouver, British Columbia, Canada.ORCID 0000-0001-6259-9045
Barry P YoungDepartment of Cellular and Physiological Sciences, University of British Columbia, Vancouver, British Columbia, Canada.
Christopher J LoewenDepartment of Cellular and Physiological Sciences, University of British Columbia, Vancouver, British Columbia, Canada.
Thibault MayorMichael Smith Laboratories, University of British Columbia, Vancouver, British Columbia, Canada.
University of British Columbia · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Misfolded proteins challenge the ability of cells to maintain protein homeostasis and can accumulate into toxic protein aggregates. As a consequence, cells have adopted a number of protein quality control pathways to prevent protein aggregation, promote protein folding, and target terminally misfolded proteins for degradation. In this study, we employed a thermosensitive allele of the yeast Guk1 guanylate kinase as a model misfolded protein to investigate degradative protein quality control pathways. We performed a flow cytometry based screen to identify factors that promote proteasomal degradation of proteins misfolded as the result of missense mutations. In addition to the E3 ubiquitin ligase Ubr1, we identified the prefoldin chaperone subunit Gim3 as an important quality control factor. Whereas the absence of GIM3 did not impair proteasomal function or the ubiquitination of the model substrate, it led to the accumulation of the poorly soluble model substrate in cellular inclusions that was accompanied by delayed degradation. We found that Gim3 interacted with the Guk1 mutant allele and propose that prefoldin promotes the degradation of the unstable model substrate by maintaining the solubility of the misfolded protein. We also demonstrated that in addition to the Guk1 mutant, prefoldin can stabilize other misfolded cytosolic proteins containing missense mutations.

Indexed as

ProteolysisGuanylate KinasesMolecular ChaperonesMutation, MissenseProteasome Endopeptidase ComplexProtein AggregatesProtein FoldingSaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsSolubilityUbiquitinationUbiquitin-Protein LigasesGim3 protein, S cerevisiaeGuanylate KinasesGuk1 protein, S cerevisiaeMolecular ChaperonesprefoldinProteasome Endopeptidase ComplexProtein AggregatesSaccharomyces cerevisiae ProteinsUbiquitin-Protein LigasesUBR1 protein, S cerevisiae

Identifiers

PMID27448207
PMCPMC4957761
OpenAlexW2492182430

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.