Evidence map›Paper›PMID 28057766›Full record

ArticleMolecular biology of the cell2017

Rapid degradation of mutant SLC25A46 by the ubiquitin-proteasome system results in MFN1/2-mediated hyperfusion of mitochondria.

Janos Steffen, Ajay A Vashisht, Jijun Wan, Joanna C Jen, Steven M Claypool, James A Wohlschlegel, Carla M Koehler

Open access · greenAbstract read
In one paragraph

Article in Molecular biology of the cell, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
4.4field-weighted citation impact, top 5% 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

42 citing papers in PubMed, 80 citations in OpenAlex.

  1. Review
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  5. Review
  6. Review
  7. Review
  8. Review
  9. Article
  10. Article
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  16. UBXN7 cofactor of CRL3Biochimica et biophysica acta. Molecular cell research · 2021
    Article
  17. Article
  18. Review
  19. Review
  20. Epigenetic Regulation of ALS and CMT: A Lesson fromInternational journal of molecular sciences · 2021
    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

7 authors at 2 institutions in 1 country.

Janos SteffenDepartment of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095.
Ajay A VashishtDepartment of Biological Chemistry, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095.
Jijun WanDepartment of Neurology, University of California, Los Angeles, Los Angeles, CA 90095.
Joanna C JenDepartment of Neurology, University of California, Los Angeles, Los Angeles, CA 90095.
Steven M ClaypoolDepartment of Physiology, Johns Hopkins University School of Medicine, Baltimore, MD 21205.
James A WohlschlegelDepartment of Biological Chemistry, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095.
Carla M KoehlerDepartment of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095 koehler@chem.ucla.edu.
University of California, Los Angeles · USJohns Hopkins University · US

Funding

UCLA Clinical and Translational Science InstituteUL1TR000124 · NCATS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI DUBINETT, STEVEN M. · 2012 to 2015
$57.0M
Biogenesis of the mitochondrial inner membrane diversity supplementR01GM061721 · NIGMS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI KOEHLER, CARLA M · 2000 to 2025
$8.1M
Proteolytic Control of Iron Metabolism by the Ubiquitin Ligase FBXL5R01GM089778 · NIGMS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI WOHLSCHLEGEL, JAMES AKIRA · 2010 to 2023
$4.0M
Mitochondrial phosphatidylethanolamine metabolismR01GM111548 · NIGMS · JOHNS HOPKINS UNIVERSITY · PI CLAYPOOL, STEVEN MICHAEL · 2014 to 2021
$2.8M
Cardiolipin and the mitochondrial ADP/ATP carrier interactomeR01HL108882 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI CLAYPOOL, STEVEN MICHAEL · 2013 to 2017
$2.0M
Genetics of Familial Episodic AtaxiaR01NS064183 · NINDS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI JEN, JOANNA C · 2009 to 2010
$965k
NCATS NIH HHS UL1 TR000124NHLBI NIH HHS R01 HL108882NIGMS NIH HHS R01 GM061721NIGMS NIH HHS R01 GM089778NIGMS NIH HHS R01 GM111548NINDS NIH HHS R01 NS064183
6 · The paper itself

Abstract

SCL25A46 is a mitochondrial carrier protein that surprisingly localizes to the outer membrane and is distantly related to Ugo1. Here we show that a subset of SLC25A46 interacts with mitochondrial dynamics components and the MICOS complex. Decreased expression of SLC25A46 results in increased stability and oligomerization of MFN1 and MFN2 on mitochondria, promoting mitochondrial hyperfusion. A mutation at L341P causes rapid degradation of SLC25A46, which manifests as a rare disease, pontocerebellar hypoplasia. The E3 ubiquitin ligases MULAN and MARCH5 coordinate ubiquitylation of SLC25A46 L341P, leading to degradation by organized activities of P97 and the proteasome. Whereas outer mitochondrial membrane-associated degradation is typically associated with apoptosis or a specialized type of autophagy termed mitophagy, SLC25A46 degradation operates independently of activation of outer membrane stress pathways. Thus SLC25A46 is a new component in mitochondrial dynamics that serves as a regulator for MFN1/2 oligomerization. Moreover, SLC25A46 is selectively degraded from the outer membrane independently of mitophagy and apoptosis, providing a framework for mechanistic studies in the proteolysis of outer membrane proteins.

Indexed as

ApoptosisAutophagyGTP PhosphohydrolasesHEK293 CellsHeLa CellsHumansMitochondriaMitochondrial DynamicsMitochondrial MembranesMitochondrial Membrane Transport ProteinsMitochondrial ProteinsPhosphate Transport ProteinsProteasome Endopeptidase ComplexProteolysisUbiquitinUbiquitinationGTP PhosphohydrolasesMfn1 protein, humanMFN2 protein, humanMitochondrial Membrane Transport ProteinsMitochondrial ProteinsPhosphate Transport ProteinsProteasome Endopeptidase ComplexSLC25A46 protein, humanUbiquitinUbiquitin-Protein Ligases

Identifiers

PMID28057766
PMCPMC5328619
OpenAlexW2568225360

What OpenQuestion holds

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LicenceCC BY-NC-SA
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.