Evidence map›Paper›PMID 32668237›Full record

ArticleCell reports2020

The Cdc48 Complex Alleviates the Cytotoxicity of Misfolded Proteins by Regulating Ubiquitin Homeostasis.

Ryan Higgins, Marie-Helene Kabbaj, Delaney Sherwin, Lauren A Howell, Alexa Hatcher, Robert J Tomko, Yanchang Wang

Open access · goldAbstract read
In one paragraph

Article in Cell reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.7field-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

18 citing papers in PubMed, 30 citations in OpenAlex.

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  18. Mitochondrial Surveillance by Cdc48/p97: MAD vs. Membrane Fusion.International journal of molecular sciences · 2020
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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

7 authors at 1 institution in 1 country.

Ryan HigginsDepartment of Biomedical Sciences, College of Medicine, Florida State University, 1115 West Call Street, Tallahassee, FL 32306, USA.
Marie-Helene KabbajDepartment of Biomedical Sciences, College of Medicine, Florida State University, 1115 West Call Street, Tallahassee, FL 32306, USA.
Delaney SherwinDepartment of Biomedical Sciences, College of Medicine, Florida State University, 1115 West Call Street, Tallahassee, FL 32306, USA.
Lauren A HowellDepartment of Biomedical Sciences, College of Medicine, Florida State University, 1115 West Call Street, Tallahassee, FL 32306, USA.
Alexa HatcherCollege of Nursing, Florida State University, 600 West College Avenue, Tallahassee, FL 32306, USA.
Robert J TomkoDepartment of Biomedical Sciences, College of Medicine, Florida State University, 1115 West Call Street, Tallahassee, FL 32306, USA.
Yanchang WangDepartment of Biomedical Sciences, College of Medicine, Florida State University, 1115 West Call Street, Tallahassee, FL 32306, USA. Electronic address: yanchang.wang@med.fsu.edu.
Florida State University · US

Funding

Engagement and Communication Between Proteasonal SubcomplexesR01GM118600 · NIGMS · FLORIDA STATE UNIVERSITY · PI ROBERT JOSEPH TOMKO · 2017 to 2026
$2.7M
The Initiation of DNA Replication in EukaryotesR01GM121786 · NIGMS · FLORIDA STATE UNIVERSITY · PI WANG, YANCHANG · 2017 to 2020
$1.2M
NIGMS NIH HHS R01 GM118600NIGMS NIH HHS R01 GM121786
6 · The paper itself

Abstract

The accumulation of misfolded proteins is associated with multiple neurodegenerative disorders, but it remains poorly defined how this accumulation causes cytotoxicity. Here, we demonstrate that the Cdc48/p97 segregase machinery drives the clearance of ubiquitinated model misfolded protein Huntingtin (Htt103QP) and limits its aggregation. Nuclear ubiquitin ligase San1 acts upstream of Cdc48 to ubiquitinate Htt103QP. Unexpectedly, deletion of SAN1 and/or its cytosolic counterpart UBR1 rescues the toxicity associated with Cdc48 deficiency, suggesting that ubiquitin depletion, rather than compromised proteolysis of misfolded proteins, causes the growth defect in cells with Cdc48 deficiency. Indeed, Cdc48 deficiency leads to elevated protein ubiquitination levels and decreased free ubiquitin, which depends on San1/Ubr1. Furthermore, enhancing free ubiquitin levels rescues the toxicity in various Cdc48 pathway mutants and restores normal turnover of a known Cdc48-independent substrate. Our work highlights a previously unappreciated function for Cdc48 in ensuring the regeneration of monoubiquitin that is critical for normal cellular function.

Indexed as

HomeostasisProtein FoldingCell DeathHuntingtin ProteinMutant ProteinsMutationProteasome Endopeptidase ComplexProteolysisSaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsTemperatureUbiquitinUbiquitinated ProteinsUbiquitinationUbiquitin-Protein LigasesValosin Containing ProteinCDC48 protein, S cerevisiaeHuntingtin ProteinMutant ProteinsProteasome Endopeptidase ComplexSaccharomyces cerevisiae ProteinsSAN1 protein, S cerevisiaeUbiquitinUbiquitinated ProteinsUbiquitin-Protein LigasesUBR1 protein, S cerevisiaeValosin Containing ProteinCdc48mutated HuntingtinproteotoxicitySan1/Ubr1 E3 ligasesubiquitin homeostasis

Identifiers

PMID32668237
PMCPMC7392062
OpenAlexW3043781715

What Socratic holds

Textmetadata
LicenceTDM
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 Socratic graph.