5FEY

TRIM32 RING


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • 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 1.2 of the entry. See complete history


Literature

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: 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 ...

    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 katrin.rittinger@crick.ac.uk.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
E3 ubiquitin-protein ligase TRIM32 AB94Homo sapiensMutation(s): 0 
Gene Names: TRIM32HT2A
EC: 6.3.2 (PDB Primary Data), 2.3.2.27 (UniProt)
Find proteins for Q13049 (Homo sapiens)
Explore Q13049 
Go to UniProtKB:  Q13049
NIH Common Fund Data Resources
PHAROS:  Q13049
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • 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
PHENIXrefinement
XDSdata reduction
XDSdata scaling
AutoSolphasing

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