Evidence map›Paper›PMID 21220517›Full record

ArticleMolecular and cellular biology2011

Nucleolar targeting of the fbw7 ubiquitin ligase by a pseudosubstrate and glycogen synthase kinase 3.

Markus Welcker, Elizabeth A Larimore, Lori Frappier, Bruce E Clurman

Abstract read
In one paragraph

Article in Molecular and cellular biology, 2011. 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
–field-weighted citation impact
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.

  1. Article
  2. Review
  3. Review
  4. Molecular insights and clinical implications for the tumor suppressor role of SCFBiochimica et biophysica acta. Reviews on cancer · 2024
    Review
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Review
  11. Article
  12. Review
  13. Tumor Suppressor FBXW7 and Its Regulation of DNA Damage Response and Repair.Frontiers in cell and developmental biology · 2021
    Review
  14. Review
  15. Review
  16. Article
  17. Review
  18. Review
  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.

Markus WelckerFred Hutchinson Cancer Research Center, Mailstop D2-100, 1100 Fairview Ave. N, Seattle, WA 98109, USA.
Elizabeth A Larimore
Lori Frappier
Bruce E Clurman

Funding

TRAINING IN MOLECULAR AND CELLULAR BIOLOGYT32GM007270 · NIGMS · UNIVERSITY OF WASHINGTON · PI RAIBLE, DAVID W · 1985 to 2020
$21.0M
Interdisciplinary Tranining in Cancer ResearchT32CA080416 · NCI · UNIVERSITY OF WASHINGTON · PI STODDARD, BARRY L. · 1998 to 2023
$9.7M
Transcription Factors in Stem Cell Self-Renewal and DifferentationP01HL084205 · NHLBI · FRED HUTCHINSON CANCER RESEARCH CENTER · PI EISENMAN, ROBERT NEIL · 2007 to 2011
$9.7M
Tumor Suppression by the Fbw7 Ubiquitin LigaseR01CA084069 · NCI · FRED HUTCHINSON CANCER RESEARCH CENTER · PI CLURMAN, BRUCE E · 2000 to 2015
$5.1M
Normal and Neoplastic Regulation of Cyclin ER01CA102742 · NCI · FRED HUTCHINSON CANCER RESEARCH CENTER · PI CLURMAN, BRUCE E · 2003 to 2013
$3.8M
CIHRNCI NIH HHS CA084069NCI NIH HHS R01 CA084069NCI NIH HHS R01 CA102742NCI NIH HHS T32 CA080416NHLBI NIH HHS P01 HL084205NIGMS NIH HHS 2T32 GM007270NIGMS NIH HHS T32 GM007270
6 · The paper itself

Abstract

E3 ubiquitin ligases catalyze protein degradation by the ubiquitin-proteasome system, and their activity is tightly controlled. One level of regulation involves subcellular localization, and the Fbw7 tumor suppressor exemplifies this type of control. Fbw7 is the substrate-binding component of an SCF ubiquitin ligase that degrades critical oncoproteins. Alternative splicing produces three Fbw7 protein isoforms that occupy distinct compartments: Fbw7α is nucleoplasmic, Fbw7β is cytoplasmic, and Fbw7γ is nucleolar. We found that cancer-associated Fbw7 mutations that disrupt substrate binding prevent Fbw7γ nucleolar localization, implicating a substrate-like interaction in nucleolar targeting. We identified EBNA1-binding protein 2 (Ebp2) as the critical nucleolar factor that directly mediates Fbw7 nucleolar targeting. Ebp2 binds to Fbw7 like a substrate, and this is mediated by an Ebp2 degron that is phosphorylated by glycogen synthase kinase 3. However, despite these canonical substrate-like interactions, Fbw7 binding is largely uncoupled from Ebp2 turnover in vivo. Ebp2 thus acts like a pseudosubstrate that directly recruits Fbw7 to nucleoli.

Indexed as

Carrier ProteinsCell LineCell Line, TumorCell NucleolusCells, CulturedGlycogen Synthase Kinase 3HumansMutationNeoplasmsPhosphorylationProtein BindingProtein IsoformsProtein TransportRNA-Binding ProteinsSKP Cullin F-Box Protein LigasesCarrier ProteinsEBNA1BP2 protein, humanGlycogen Synthase Kinase 3Protein IsoformsRNA-Binding ProteinsSKP Cullin F-Box Protein Ligases

Identifiers

PMID21220517
PMCPMC3067902

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.