Cited by 84Ubiquitin and proteasome pathwaysDNA Repair MechanismsEnzyme Structure and Function

Structural basis of BRCC36 function in DNA repair and immune regulation

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Rabl, Julius, Bunker, Richard D., Schenk, Andreas D., Cavadini, Simone, Gill, Mark E., Abdulrahman, Wassim, Andrés-Pons, Amparo, Luijsterburg, Martijn S. +15 more·2019·Molecular Cell

Abstract

In mammals, ∼100 deubiquitinases act on ∼20,000 intracellular ubiquitination sites. Deubiquitinases are commonly regarded as constitutively active, with limited regulatory and targeting capacity. The BRCA1-A and BRISC complexes serve in DNA double-strand break repair and immune signaling and contain the lysine-63 linkage-specific BRCC36 subunit that is functionalized by scaffold subunits ABRAXAS and ABRO1, respectively. The molecular basis underlying BRCA1-A and BRISC function is currently unknown. Here we show that in the BRCA1-A complex structure, ABRAXAS integrates the DNA repair protein RAP80 and provides a high-affinity binding site that sequesters the tumor suppressor BRCA1 away from the break site. In the BRISC structure, ABRO1 binds SHMT2α, a metabolic enzyme enabling cancer growth in hypoxic environments, which we find prevents BRCC36 from binding and cleaving ubiquitin chains. Our work explains modularity in the BRCC36 DUB family, with different adaptor subunits conferring diversified targeting and regulatory functions.

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Authors
Rabl, J., Bunker, R. D., Schenk, A. D., Cavadini, S., Gill, M. E., Abdulrahman, W., Andrés-Pons, A., Luijsterburg, M. S., Ibrahim, A. F. M., Branigan, E., Aguirre, J. D., Marceau, A. H., Guérillon, C., Bouwmeester, T., Hassiepen, U., Peters, A. H. F. M., Renatus, M., Gelman, L., Rubin, S. M., Mailand, N., van Attikum, H., Hay, R. T., & Thomä, N. H.
Affiliations
  • University of Basel (CH)
  • Leiden University Medical Center (NL)
  • University of Dundee (GB)
  • University of California, Santa Cruz (US)
  • University of Copenhagen (DK)
  • Novartis (Switzerland) (CH)
Corresponding author
Thomä, Nicolas H.
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2019-08
Volume
75
Issue
3
Pages
483-497.e9
ISSN
1097-2765 (ISSN-L)
OpenAlex
W2953453836
Cited by
84
References
108
Citations by year
2026: 19 · 2025: 11 · 2024: 13 · 2023: 4 · 2022: 12 · 2021: 17 · 2020: 8
FWCI
3.06
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (publishedVersion, cc-by-nc-nd)
  • Repository for Publications and Research Data (ETH Zurich) (publishedVersion, cc-by-nc-nd)
  • Discovery Research Portal (University of Dundee) (submittedVersion, cc-by-nc-nd)
  • DORA PSI (Paul Scherrer Institute) (submittedVersion, cc-by-nc-nd)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
  • Leiden Repository (Leiden University) (submittedVersion)
  • ETH Zürich Research Collection
Funders
  • Lundbeckfonden
  • National Institutes of Health (R01 GM127707, R01 GM124148)
  • Wellcome Trust (098391/Z/12/7)
  • Horizon 2020 Framework Programme
  • European Commission
  • Kræftens Bekæmpelse
  • European Research Council (ERC-CoG, 666068)
  • Novartis Foundation
  • Nederlandse Organisatie voor Wetenschappelijk Onderzoek (016.161.320)
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (CRSII3_160734/1)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Physical Sciences › Materials Science › Materials Chemistry › Enzyme Structure and Function
Keywords
BRCC36, deubiquitinase, BRCA1-A complex, DNA double-strand break repair, Abraxas, RAP80, immune signaling, protein complex structure, hypoxia, cancer metabolism
MeSH terms
Deubiquitinating Enzymes, Binding Sites, Carrier Proteins, Cell Nucleus, Cytoplasm, DNA Repair, DNA-Binding Proteins, HeLa Cells, Humans, Immunity, Cellular, Neoplasms, Protein Binding, BRCA1 Protein, Ubiquitin, Nuclear Matrix-Associated Proteins, Multiprotein Complexes, DNA Breaks, Double-Stranded, Ubiquitination, Histone Chaperones, Ubiquitin-Specific Proteases

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