Cited by 118DNA Repair MechanismsGenetic Neurodegenerative DiseasesUbiquitin and proteasome pathways

A SUMO-dependent interaction between Senataxin and the exosome, disrupted in the neurodegenerative disease AOA2, targets the exosome to sites of transcription-induced DNA damage

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Richard, Patricia, Feng, Shuang, Manley, James L.·2013·Genes & Development

Abstract

Senataxin (SETX) is an RNA/DNA helicase implicated in transcription termination and the DNA damage response and is mutated in two distinct neurological disorders: AOA2 (ataxia oculomotor apraxia 2) and ALS4 (amyotrophic lateral sclerosis 4). Here we provide evidence that Rrp45, a subunit of the exosome, associates with SETX in a manner dependent on SETX sumoylation. We show that the interaction and SETX sumoylation are disrupted by SETX mutations associated with AOA2 but not ALS4. Furthermore, Rrp45 colocalizes with SETX in distinct foci upon induction of transcription-related DNA damage. Our results thus provide evidence for a SUMO-dependent interaction between SETX and the exosome, disrupted in AOA2, that targets the exosome to sites of DNA damage.

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Crossref · 10.1101/gad.224923.113

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  • RNAse H2 acts redundantly with the RNA-DNA helicase Senataxin, which recruits the RNA exosome to the genome through a direct interaction with EXOSC9.

    “Interestingly, RNAse H2 has been shown to act redundantly with the RNA-DNA helicase Senataxin, which recruits the RNA exosome to the genome through a direct interaction with EXOSC9105,106.”

    From EXOSC3 G191 Variants Trigger System-Wide Recalibration of RNA Processing Machinery (2026) · cites this paper as [106]

    The Results and Discussion report a SUMO-dependent association between Senataxin (SETX) and the exosome subunit Rrp45, with colocalization in stress-induced nuclear foci. They do not show that RNase H2 acts redundantly with SETX; their RNase H experiment used RNase H1. The authors also say that attempts to demonstrate a direct interaction using purified proteins were unsuccessful, so the claim of direct binding is stronger than their evidence. (LLM, conf=0.88)

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Authors
Richard, P., Feng, S., & Manley, J. L.
Affiliations
Columbia University (US)
Corresponding author
Manley, James L.
Venue
Genes & Development
Published
2013-10-08
Volume
27
Issue
20
Pages
2227-2232
ISSN
  • 0890-9369 (ISSN-L)
  • 1549-5477
OpenAlex
W2101603959
Cited by
118
References
35
Citations by year
2026: 5 · 2025: 8 · 2024: 11 · 2023: 12 · 2022: 4 · 2021: 12 · 2020: 14 · 2019: 6 · 2018: 11 · 2017: 6 · 2016: 10 · 2015: 9 · 2014: 9 · 2012: 1
Type
posted content
Language
en
Open access
Licence
cc-by-nc
Locations
  • Genes & Development (publishedVersion, cc-by-nc)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
Funders
  • Muscular Dystrophy Association
  • National Institutes of Health
  • National Institute of General Medical Sciences (R01GM028983, R01 GM 28983)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Genetic Neurodegenerative Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
Keywords
SETX, exosomes, SUMOylation, DNA damage response, RNA/DNA helicase, neurodegenerative diseases, protein-protein interaction
MeSH terms
Amyotrophic Lateral Sclerosis, Apraxias, DNA Damage, DNA Helicases, HeLa Cells, Humans, Mutation, RNA-Binding Proteins, RNA Helicases, Two-Hybrid System Techniques, Small Ubiquitin-Related Modifier Proteins, Exosomes, Sumoylation, Exosome Multienzyme Ribonuclease Complex, Multifunctional Enzymes

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