Cited by 303Mitochondrial Function and PathologyAutophagy in Disease and TherapyCellular transport and secretion

MITOL Regulates Endoplasmic Reticulum-Mitochondria Contacts via Mitofusin2

Open access
Sugiura, Ayumu, Nagashima, Shun, Tokuyama, Takeshi, Amo, Taku, Matsuki, Yohei, Ishido, Satoshi, Kudo, Yoshihisa, McBride, Heidi M. +4 more·2013·Molecular Cell

Abstract

The mitochondrial ubiquitin ligase MITOL regulates mitochondrial dynamics. We report here that MITOL regulates mitochondria-associated endoplasmic reticulum (ER) membrane (MAM) domain formation through mitofusin2 (Mfn2). MITOL interacts with and ubiquitinates mitochondrial Mfn2, but not ER-associated Mfn2. Mutation analysis identified a specific interaction between MITOL C-terminal domain and Mfn2 HR1 domain. MITOL mediated lysine-63-linked polyubiquitin chain addition to Mfn2, but not its proteasomal degradation. MITOL knockdown inhibited Mfn2 complex formation and caused Mfn2 mislocalization and MAM dysfunction. Sucrose-density gradient centrifugation and blue native PAGE retardation assay demonstrated that MITOL is required for GTP-dependent Mfn2 oligomerization. MITOL knockdown reduced Mfn2 GTP binding, resulting in reduced GTP hydrolysis. We identified K192 in the GTPase domain of Mfn2 as a major ubiquitination site for MITOL. A K192R mutation blocked oligomerization even in the presence of GTP. Taken together, these results suggested that MITOL regulates ER tethering to mitochondria by activating Mfn2 via K192 ubiquitination.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1016/j.molcel.2013.04.023

Cites

35 of 35 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 1

  1. [23]23. Rizzuto, R. ∙ Pinton, P. ∙ Carrington, W. ... Close contacts with the endoplasmic reticulum as determinants of mitochondrial Ca2+ responses Science. 1998; 280:1763-1766 Crossref Scopus (1915) PubMed Google Scholar

Cited by

Sorted by citations

Authors
Sugiura, A., Nagashima, S., Tokuyama, T., Amo, T., Matsuki, Y., Ishido, S., Kudo, Y., McBride, H. M., Fukuda, T., Matsushita, N., Inatome, R., & Yanagi, S.
Affiliations
  • Tokyo University of Pharmacy and Life Sciences (JP)
  • National Defense Academy of Japan (JP)
  • RIKEN (JP)
  • Tokyo Medical University Hachioji Medical Center (JP)
  • Montreal Neurological Institute and Hospital (CA)
Corresponding author
Yanagi, Shigeru
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2013-07
Volume
51
Issue
1
Pages
20-34
ISSN
1097-2765 (ISSN-L)
OpenAlex
W2022458507
Cited by
303
References
35
Citations by year
2026: 13 · 2025: 22 · 2024: 11 · 2023: 26 · 2022: 24 · 2021: 31 · 2020: 34 · 2019: 23 · 2018: 19 · 2017: 30 · 2016: 30 · 2015: 17 · 2014: 15 · 2013: 7
FWCI
10.29
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Japan Society for the Promotion of Science
  • Ministry of Education, Culture, Sports, Science and Technology
  • Naito Foundation
  • Sumitomo Foundation
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
Keywords
MAM domain, ER-mitochondria contact sites, ubiquitination, mitochondrial dynamics, GTPase activity, protein complex formation, protein mislocalization
MeSH terms
Animals, Endoplasmic Reticulum, HeLa Cells, Humans, Membrane Proteins, Mitochondria, GTP Phosphohydrolases, Mitochondrial Proteins, Ubiquitin-Protein Ligases, Mice, Ubiquitination

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review