Cited by 214Ubiquitin and proteasome pathwaysProtein Degradation and InhibitorsEnzyme Structure and Function

Cullin–RING ubiquitin E3 ligase regulation by the COP9 signalosome

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Cavadini, Simone, Fischer, Eric S., Bunker, Richard D., Potenza, Alessandro, Lingaraju, Gondichatnahalli M., Goldie, Kenneth N., Mohamed, Weaam I., Faty, Mahamadou +10 more·2016·Nature

Abstract

The cullin-RING ubiquitin E3 ligase (CRL) family comprises over 200 members in humans. The COP9 signalosome complex (CSN) regulates CRLs by removing their ubiquitin-like activator NEDD8. The CUL4A-RBX1-DDB1-DDB2 complex (CRL4A(DDB2)) monitors the genome for ultraviolet-light-induced DNA damage. CRL4A(DBB2) is inactive in the absence of damaged DNA and requires CSN to regulate the repair process. The structural basis of CSN binding to CRL4A(DDB2) and the principles of CSN activation are poorly understood. Here we present cryo-electron microscopy structures for CSN in complex with neddylated CRL4A ligases to 6.4 Å resolution. The CSN conformers defined by cryo-electron microscopy and a novel apo-CSN crystal structure indicate an induced-fit mechanism that drives CSN activation by neddylated CRLs. We find that CSN and a substrate cannot bind simultaneously to CRL4A, favouring a deneddylated, inactive state for substrate-free CRL4 complexes. These architectural and regulatory principles appear conserved across CRL families, allowing global regulation by CSN.

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Crossref · 10.1038/nature17416

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  • The conformational dynamics of unneddylated CRLs would enable transitioning between the different conformations coordinating cycles of neddylation/deneddylation with CAND1-driven substrate-receptor exchange.

    “it seems likely that the conformational dynamics of unneddylated CRLs (Extended Data Figure 2) would enable transitioning between the different conformations coordinating cycles of neddylation/deneddylation with CAND1-driven substrate-receptor exchange39,46–49.”

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Authors
Cavadini, S., Fischer, E. S., Bunker, R. D., Potenza, A., Lingaraju, G. M., Goldie, K. N., Mohamed, W. I., Faty, M., Petzold, G., Beckwith, R. E. J., Tichkule, R. B., Hassiepen, U., Abdulrahman, W., Pantelic, R. S., Matsumoto, S., Sugasawa, K., Stahlberg, H., & Thomä, N. H.
Affiliations
  • University of Basel (CH)
  • Harvard University (US)
  • Novartis (Switzerland) (CH)
  • Biosignal Research Center, Kobe University (JP)
Corresponding author
Thomä, Nicolas H.
Venue
Nature
Published
2016-03-30
Volume
531
Issue
7596
Pages
598-603
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2327577222
Cited by
213
References
49
Citations by year
2026: 15 · 2025: 14 · 2024: 16 · 2023: 18 · 2022: 13 · 2021: 25 · 2020: 45 · 2019: 23 · 2018: 14 · 2017: 21 · 2016: 8 · 2013: 1
FWCI
11.43
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DORA PSI (Paul Scherrer Institute) (submittedVersion)
  • edoc (University of Basel) (submittedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
  • Zenodo (CERN European Organization for Nuclear Research) (submittedVersion, other-oa)
Funders
Japan Society for the Promotion of Science
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Degradation and Inhibitors
  • Physical Sciences › Materials Science › Materials Chemistry › Enzyme Structure and Function
Keywords
COP9 signalosome, NEDD8, induced fit, UV-induced DNA damage, DNA repair, protein degradation, substrate binding
MeSH terms
COP9 Signalosome Complex, Allosteric Regulation, Apoproteins, Binding Sites, Carrier Proteins, DNA Damage, DNA-Binding Proteins, Humans, Kinetics, Models, Molecular, Peptide Hydrolases, Protein Binding, Ubiquitins, Crystallography, X-Ray, Cryoelectron Microscopy, Cullin Proteins, Multiprotein Complexes, Ubiquitination, Biocatalysis

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