Evidence map›Paper›PMID 8978700›Full record

ArticleThe EMBO journal1996

Heat shock disassembles the nucleolus and inhibits nuclear protein import and poly(A)+ RNA export.

Y Liu, S Liang, A M Tartakoff

Open access · bronzeAbstract read
In one paragraph

Article in The EMBO journal, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
1.9field-weighted citation impact, top 14% 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

27 citing papers in PubMed, 67 citations in OpenAlex.

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  15. The specialized cytosolic J-protein, Jjj1, functions in 60S ribosomal subunit biogenesis.Proceedings of the National Academy of Sciences of the United States of America · 2007
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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

3 authors at 2 institutions in 1 country.

Y LiuDepartment of Pathology and Cell Biology Program, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA.
S Liang
A M Tartakoff
Case Western Reserve University · USUniversity School · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Heat shock causes major positive and negative changes in gene expression, drastically alters the appearance of the nucleolus and inhibits rRNA synthesis. We here show that it causes many yeast nucleolar proteins, including the fibrillarin homolog Nop1p, to relocate to the cytoplasm. Relocation depends on several proteins implicated in mRNA transport (Mtrps) and is reversible. Two observations indicate, surprisingly, that disassembly results from a reduction in Ssa protein (Hsp70) levels: (i) selective depletion of Ssa1p leads to disassembly of the nucleolus; (ii) preincubation at 37 degrees C protects the nucleolus against disassembly by heat shock, unless expression of Ssa proteins is specifically inhibited. We observed that heat shock or reduction of Ssa1p levels inhibits protein import into the nucleus and therefore we propose that inhibition of import leads to disassembly of the nucleolus. These observations provide a simple explanation of the effects of heat shock on the anatomy of the nucleolus and rRNA transcription. They also extend understanding of the path of nuclear export. Since a number of nucleoplasmic proteins also relocate upon heat shock, these observations can provide a general mechanism for regulation of gene expression. Relocation of the hnRNP-like protein Mtr13p (= Npl3p, Nop3p), explains the heat shock sensitivity of export of average poly(A)+ RNA. Strikingly, Hsp mRNA export appears not to be affected.

Indexed as

Ribonucleoproteins, Small NucleolarSaccharomyces cerevisiae ProteinsCell NucleolusChromosomal Proteins, Non-HistoneFluorescent Antibody TechniqueFungal ProteinsHeterogeneous-Nuclear RibonucleoproteinsHot TemperatureHSP70 Heat-Shock ProteinsKineticsModels, BiologicalNuclear ProteinsRibonucleoproteinsRNA, MessengerSaccharomyces cerevisiaeSpheroplastsChromosomal Proteins, Non-HistonefibrillarinFungal ProteinsHeterogeneous-Nuclear RibonucleoproteinsHSP70 Heat-Shock ProteinsNOP1 protein, S cerevisiaeNuclear ProteinsRibonucleoproteinsRibonucleoproteins, Small NucleolarRNA, MessengerSaccharomyces cerevisiae Proteins

Identifiers

PMID8978700
PMCPMC452498
OpenAlexW1715492285

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.