Experimental Data Snapshot

  • Resolution: 2.23 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.248 
  • R-Value Observed: 0.249 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


Functional role of TRIM E3 ligase oligomerization and regulation of catalytic activity.

Koliopoulos, M.G.Esposito, D.Christodoulou, E.Taylor, I.A.Rittinger, K.

(2016) EMBO J 35: 1204-1218

  • DOI: https://doi.org/10.15252/embj.201593741
  • Primary Citation of Related Structures:  
    5FER, 5FEY

  • PubMed Abstract: 

    TRIM E3 ubiquitin ligases regulate a wide variety of cellular processes and are particularly important during innate immune signalling events. They are characterized by a conserved tripartite motif in their N-terminal portion which comprises a canonical RING domain, one or two B-box domains and a coiled-coil region that mediates ligase dimerization. Self-association via the coiled-coil has been suggested to be crucial for catalytic activity of TRIMs; however, the precise molecular mechanism underlying this observation remains elusive. Here, we provide a detailed characterization of the TRIM ligases TRIM25 and TRIM32 and show how their oligomeric state is linked to catalytic activity. The crystal structure of a complex between the TRIM25 RING domain and an ubiquitin-loaded E2 identifies the structural and mechanistic features that promote a closed E2~Ub conformation to activate the thioester for ubiquitin transfer allowing us to propose a model for the regulation of activity in the full-length protein. Our data reveal an unexpected diversity in the self-association mechanism of TRIMs that might be crucial for their biological function.

  • Organizational Affiliation

    Mill Hill Laboratory, Molecular Structure of Cell Signalling Laboratory, The Francis Crick Institute, London, UK.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
E3 ubiquitin-protein ligase TRIM32
A, B
94Homo sapiensMutation(s): 0 
Gene Names: TRIM32HT2A
EC: 6.3.2
UniProt & NIH Common Fund Data Resources
Find proteins for Q13049 (Homo sapiens)
Explore Q13049 
Go to UniProtKB:  Q13049
GTEx:  ENSG00000119401 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ13049
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.23 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.248 
  • R-Value Observed: 0.249 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 54.536α = 90
b = 54.536β = 90
c = 99.12γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XDSdata scaling

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Medical Research Council (United Kingdom)United KingdomU117565398
The Francis Crick InstituteUnited KingdomFCI01

Revision History  (Full details and data files)

  • Version 1.0: 2016-05-18
    Type: Initial release
  • Version 1.1: 2016-06-15
    Changes: Database references
  • Version 1.2: 2017-09-13
    Changes: Author supporting evidence
  • Version 1.3: 2024-05-08
    Changes: Data collection, Database references