Cited by 767Ubiquitin and proteasome pathwaysEnzyme Structure and FunctionProtein Degradation and Inhibitors

Structural Insights into NEDD8 Activation of Cullin-RING Ligases: Conformational Control of Conjugation

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Duda, David M., Borg, Laura A., Scott, Daniel C., Hunt, Harold W., Hammel, Michal, Schulman, Brenda A.·2008·Cell

Abstract

Cullin-RING ligases (CRLs) comprise the largest ubiquitin E3 subclass, in which a central cullin subunit links a substrate-binding adaptor with an E2-binding RING. Covalent attachment of the ubiquitin-like protein NEDD8 to a conserved C-terminal domain (ctd) lysine stimulates CRL ubiquitination activity and prevents binding of the inhibitor CAND1. Here we report striking conformational rearrangements in the crystal structure of NEDD8~Cul5(ctd)-Rbx1 and SAXS analysis of NEDD8~Cul1(ctd)-Rbx1 relative to their unmodified counterparts. In NEDD8ylated CRL structures, the cullin WHB and Rbx1 RING subdomains are dramatically reoriented, eliminating a CAND1-binding site and imparting multiple potential catalytic geometries to an associated E2. Biochemical analyses indicate that the structural malleability is important for both CRL NEDD8ylation and subsequent ubiquitination activities. Thus, our results point to a conformational control of CRL activity, with ligation of NEDD8 shifting equilibria to disfavor inactive CAND1-bound closed architectures, and favor dynamic, open forms that promote polyubiquitination.

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Crossref · 10.1016/j.cell.2008.07.022

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  • UB transfer from a RING-docked UBE2D~UB intermediate to an F-box protein-bound substrate is difficult to rationalize by prior structural models or by the paper's cryo EM reconstructions of unneddylated and neddylated substrate-bound CRL1β-TRCP.

    “UB transfer from a RING-docked UBE2D~UB intermediate (“~” indicates thioester bond/thioester-bond mimic) to an F-box protein-bound substrate is difficult to rationalize by prior structural models 3,7,20,27, or by our cryo EM reconstructions of unneddylated and neddylated substrate-bound CRL1β-TRCP”
  • A neddylated CUL5-RBX1 domain structure (PDB ID 3DQV) revealed potential for neddylated CUL WHB and RBX1 RING domain conformational changes.

    “a structure of a neddylated CUL5-RBX1 domain (PDB ID 3DQV, labeled “Post-Neddylation”, which revealed potential for neddylated CUL WHB and RBX1 RING domain conformational changes3, and data herein shows is dynamic)”
  • The flexible tether of CUL1 Helix-29 rationalizes the previously observed proteolytic sensitivity of this region in a neddylated CUL1-RBX1 complex.

    “which rationalizes the previously observed proteolytic sensitivity of this region in a neddylated CUL1-RBX1 complex3”

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Authors
Duda, D. M., Borg, L. A., Scott, D. C., Hunt, H. W., Hammel, M., & Schulman, B. A.
Affiliations
  • St. Jude Children's Research Hospital (US)
  • Lawrence Berkeley National Laboratory (US)
Corresponding author
Schulman, Brenda A.
Venue
Cell
Publisher
Elsevier BV
Published
2008-09
Volume
134
Issue
6
Pages
995-1006
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2140219059
Cited by
767
References
63
Citations by year
2026: 29 · 2025: 30 · 2024: 45 · 2023: 31 · 2022: 30 · 2021: 51 · 2020: 60 · 2019: 39 · 2018: 31 · 2017: 41 · 2016: 43 · 2015: 45 · 2014: 41 · 2013: 62 · 2012: 48
FWCI
19.36
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Howard Hughes Medical Institute
  • National Cancer Institute (P30CA021765)
  • National Institute of General Medical Sciences (R01GM069530)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Physical Sciences › Materials Science › Materials Chemistry › Enzyme Structure and Function
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Degradation and Inhibitors
Keywords
NEDD8, cullin-RING ligases, CAND1, RBX1, RING domain, E3 ubiquitin ligase, ubiquitination, conformational change, polyubiquitination, crystal structure, small-angle X-ray scattering
MeSH terms
NEDD8 Protein, Binding Sites, Humans, Models, Molecular, Transcription Factors, Ubiquitins, Protein Structure, Tertiary, Crystallography, X-Ray, Cullin Proteins, Ubiquitination

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