Evidence map›Paper›PMID 12697815›Full record

ArticleMolecular and cellular biology2003

The Hsp70 and TRiC/CCT chaperone systems cooperate in vivo to assemble the von Hippel-Lindau tumor suppressor complex.

Mark W Melville, Amie J McClellan, Anne S Meyer, Andre Darveau, Judith Frydman

Abstract read
In one paragraph

Article in Molecular and cellular biology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 83 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
83citing papers in PubMed, 1 pooled it
2.6field-weighted citation impact, top 10% 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

83 citing papers in PubMed, 1 synthesis or guideline pooled it, 153 citations in OpenAlex.

  1. Pooled it
  2. Proteostasis and ageing dissidence.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2026
    Review
  3. Review
  4. Article
  5. Review
  6. Chaperonin in health and disease.Molecular biomedicine · 2026
    Review
  7. Article
  8. Single-Step Purification of Endogenous Human Chaperonin CCT.Methods in molecular biology (Clifton, N.J.) · 2026
    Article
  9. Article
  10. Review
  11. Review
  12. Review
  13. Review
  14. Review
  15. Article
  16. Review
  17. Article
  18. Review
  19. Article
  20. Article

23 more citing papers are in PubMed but not listed here.

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 2 institutions in 2 countries.

Mark W MelvilleDepartment of Biological Sciences, Stanford University, Stanford, California 94305, USA.
Amie J McClellan
Anne S Meyer
Andre Darveau
Judith Frydman
Stanford University · USUniversité Laval · CA

Funding

Leveraging innovative technologies in basic and clinical cancer researchT32CA009302 · NCI · STANFORD UNIVERSITY · PI LAURA D ATTARDI, Aaron M Newman · 1985 to 2026
$19.1M
PROTEIN FOLDING IN THE EUKARYOTIC CYTOSOLR01GM056433 · NIGMS · STANFORD UNIVERSITY · PI Judith Frydman · 1997 to 2026
$5.0M
Protein Folding in the Eukaryotic CytosolR37GM056433 · NIGMS · STANFORD UNIVERSITY · PI FRYDMAN, JUDITH · 2013 to 2022
$4.6M
VHL As A Novel Substrate For Cytosolic Quality ControlF32GM064992 · NIGMS · STANFORD UNIVERSITY · PI MCCLELLAN, AMIE · 2002 to 2003
$64k
NCI NIH HHS CA09302NCI NIH HHS T32 CA009302NIGMS NIH HHS F32 GM064992NIGMS NIH HHS GM56433NIGMS NIH HHS GM64992NIGMS NIH HHS R01 GM056433NIGMS NIH HHS R37 GM056433
6 · The paper itself

Abstract

The degree of cooperation and redundancy between different chaperones is an important problem in understanding how proteins fold in the cell. Here we use the yeast Saccharomyces cerevisiae as a model system to examine in vivo the chaperone requirements for assembly of the von Hippel-Lindau protein (VHL)-elongin BC (VBC) tumor suppressor complex. VHL and elongin BC expressed in yeast assembled into a correctly folded VBC complex that resembles the complex from mammalian cells. Unassembled VHL did not fold and remained associated with the cytosolic chaperones Hsp70 and TRiC/CCT, in agreement with results from mammalian cells. Analysis of the folding reaction in yeast strains carrying conditional chaperone mutants indicates that incorporation of VHL into VBC requires both functional TRiC and Hsp70. VBC assembly was defective in cells carrying either a temperature-sensitive ssa1 gene as their sole source of cytosolic Hsp70/SSA function or a temperature-sensitive mutation in CCT4, a subunit of the TRiC/CCT complex. Analysis of the VHL-chaperone interactions in these strains revealed that the cct4ts mutation decreased binding to TRiC but did not affect the interaction with Hsp70. In contrast, loss of Hsp70 function disrupted the interaction of VHL with both Hsp70 and TRiC. We conclude that, in vivo, folding of some polypeptides requires the cooperation of Hsp70 and TRiC and that Hsp70 acts to promote substrate binding to TRiC.

Indexed as

Intracellular Signaling Peptides and ProteinsTumor Suppressor ProteinsUbiquitin-Protein LigasesAdenosine TriphosphatasesChaperonin Containing TCP-1ChaperoninsCytosolElonginFungal ProteinsGenes, Tumor SuppressorHSP70 Heat-Shock ProteinsHumansLigasesMacromolecular SubstancesMicrotubule-Associated ProteinsMolecular ChaperonesAdenosine TriphosphatasesCCT4 protein, humanChaperonin Containing TCP-1ChaperoninsElonginFungal ProteinsHSP70 Heat-Shock ProteinsIntracellular Signaling Peptides and ProteinsLigasesMacromolecular SubstancesMicrotubule-Associated ProteinsMolecular ChaperonesNuclear ProteinsPPP1R11 protein, humanSaccharomyces cerevisiae ProteinsSSA1 protein, S cerevisiaeTranscription FactorsTumor Suppressor ProteinsUbiquitin-Protein LigasesVHL protein, humanVon Hippel-Lindau Tumor Suppressor Protein

Identifiers

PMID12697815
PMCPMC153194
OpenAlexW2138586777

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.