Cited by 523Ubiquitin and proteasome pathwaysEnzyme Structure and FunctionProtein Degradation and Inhibitors

Structure of a RING E3 ligase and ubiquitin-loaded E2 primed for catalysis

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Plechanovová, Anna, Jaffray, Ellis G., Tatham, Michael H., Naismith, James H., Hay, Ronald T.·2012·Nature

Abstract

Ubiquitin modification is mediated by a large family of specificity determining ubiquitin E3 ligases. To facilitate ubiquitin transfer, RING E3 ligases bind both substrate and a ubiquitin E2 conjugating enzyme linked to ubiquitin via a thioester bond, but the mechanism of transfer has remained elusive. Here we report the crystal structure of the dimeric RING domain of rat RNF4 in complex with E2 (UbcH5A) linked by an isopeptide bond to ubiquitin. While the E2 contacts a single protomer of the RING, ubiquitin is folded back onto the E2 by contacts from both RING protomers. The carboxy-terminal tail of ubiquitin is locked into an active site groove on the E2 by an intricate network of interactions, resulting in changes at the E2 active site. This arrangement is primed for catalysis as it can deprotonate the incoming substrate lysine residue and stabilize the consequent tetrahedral transition-state intermediate.

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  • Compared to prior isolated RING-UBE2D~UB structures, the neddylated CRL1β-TRCP-UBE2D~UB-substrate intermediate shows additional density corresponding to the substrate proxy along a trajectory to the ubiquitylation active site.

    “Compared to prior isolated RING-UBE2D~UB structures28–30, the neddylated CRL1β-TRCP-UBE2D~UB-substrate intermediate shows additional density corresponding to the substrate proxy along a trajectory to the ubiquitylation active site”

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Authors
Plechanovová, A., Jaffray, E. G., Tatham, M. H., Naismith, J. H., & Hay, R. T.
Affiliations
  • University of Dundee (GB)
  • University of St Andrews (GB)
Corresponding author
Hay, Ronald T.
Venue
Nature
Published
2012-07-29
Volume
489
Issue
7414
Pages
115-120
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2147542927
Cited by
521
References
41
Citations by year
2026: 25 · 2025: 36 · 2024: 41 · 2023: 24 · 2022: 41 · 2021: 39 · 2020: 41 · 2019: 29 · 2018: 27 · 2017: 44 · 2016: 39 · 2015: 37 · 2014: 47 · 2013: 46 · 2012: 5
FWCI
17.37
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • Discovery Research Portal (University of Dundee) (submittedVersion)
Funders
  • Wellcome Trust (098391, 081862, 098391/Z/12/Z)
  • Cancer Research UK (13067)
  • Scottish Funding Council
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
RING E3 ubiquitin ligase, RNF4, UbcH5a, ubiquitin transfer, isopeptide bonds, ubiquitin binding, crystal structure
MeSH terms
Animals, Humans, Hydrolysis, Models, Molecular, Mutation, Nuclear Proteins, Protein Binding, Transcription Factors, Zinc Fingers, Protein Structure, Tertiary, Crystallography, X-Ray, Catalytic Domain, Ubiquitin, Ubiquitin-Conjugating Enzymes, Ubiquitin-Protein Ligases, Multiprotein Complexes, Rats, Ubiquitination, Biocatalysis

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