Evidence map›Paper›PMID 23519465›Full record

ArticleThe Journal of biological chemistry2013

Placing a disrupted degradation motif at the C terminus of proteasome substrates attenuates degradation without impairing ubiquitylation.

Omri S Alfassy, Itamar Cohen, Yuval Reiss, Boaz Tirosh, Tommer Ravid

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.6field-weighted citation impact, top 16% 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

14 citing papers in PubMed, 21 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Review
  5. Review
  6. Review
  7. Article
  8. Protein quality control in the nucleus.Current opinion in cell biology · 2016
    Review
  9. Distinct activation of an E2 ubiquitin-conjugating enzyme by its cognate E3 ligases.Proceedings of the National Academy of Sciences of the United States of America · 2015
    Article
  10. Review
  11. Article
  12. Cellular maintenance of nuclear protein homeostasis.Cellular and molecular life sciences : CMLS · 2014
    Review
  13. Article
  14. 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

5 authors at 1 institution in 1 country.

Omri S AlfassyDepartment of Biological Chemistry, the A. Silberman Institute of Life Sciences, the Hebrew University of Jerusalem, Jerusalem 91904 Israel.
Itamar Cohen
Yuval Reiss
Boaz Tirosh
Tommer Ravid
Hebrew University of Jerusalem · IL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Protein elimination by the ubiquitin-proteasome system requires the presence of a cis-acting degradation signal. Efforts to discern degradation signals of misfolded proteasome substrates thus far revealed a general mechanism whereby the exposure of cryptic hydrophobic motifs provides a degradation determinant. We have previously characterized such a determinant, employing the yeast kinetochore protein Ndc10 as a model substrate. Ndc10 is essentially a stable protein that is rapidly degraded upon exposure of a hydrophobic motif located at the C-terminal region. The degradation motif comprises two distinct and essential elements: DegA, encompassing two amphipathic helices, and DegB, a hydrophobic sequence within the loosely structured C-terminal tail of Ndc10. Here we show that the hydrophobic nature of DegB is irrelevant for the ubiquitylation of substrates containing the Ndc10 degradation motif, but is essential for proteasomal degradation. Mutant DegB, in which the hydrophobic sequence was disrupted, acted as a dominant degradation inhibitory element when expressed at the C-terminal regions of ubiquitin-dependent and -independent substrates of the 26S proteasome. This mutant stabilized substrates in both yeast and mammalian cells, indicative of a modular recognition moiety. The dominant function of the mutant DegB provides a powerful experimental tool for evaluating the physiological implications of stabilization of specific proteasome substrates in intact cells and for studying the associated pathological effects.

Indexed as

Amino Acid MotifsDNA-Binding ProteinsEscherichia coliEscherichia coli ProteinsHEK293 CellsHumansHydrophobic and Hydrophilic InteractionsKinetochoresMutationProteasome Endopeptidase ComplexProteolysisSaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsUbiquitinationATP dependent 26S proteaseCBF2 protein, S cerevisiaeDNA-Binding ProteinsEscherichia coli ProteinsProteasome Endopeptidase ComplexSaccharomyces cerevisiae ProteinsDegradation Initiation SiteEndoplasmic Reticulum-associated DegradationProteasomeProtein DegradationUbiquitinUbiquitin Ligase

Identifiers

PMID23519465
PMCPMC3642311
OpenAlexW2075569400

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.