4TKP

Complex of Ubc13 with the RING domain of the TRIM5alpha retroviral restriction factor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.08 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.226 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

RING Dimerization Links Higher-Order Assembly of TRIM5 alpha to Synthesis of K63-Linked Polyubiquitin.

Yudina, Z.Roa, A.Johnson, R.Biris, N.de Souza Aranha Vieira, D.A.Tsiperson, V.Reszka, N.Taylor, A.B.Hart, P.J.Demeler, B.Diaz-Griffero, F.Ivanov, D.N.

(2015) Cell Rep 12: 788-797

  • DOI: https://doi.org/10.1016/j.celrep.2015.06.072
  • Primary Citation of Related Structures:  
    4TKP

  • PubMed Abstract: 

    Members of the tripartite motif (TRIM) protein family of RING E3 ubiquitin (Ub) ligases promote innate immune responses by catalyzing synthesis of polyubiquitin chains linked through lysine 63 (K63). Here, we investigate the mechanism by which the TRIM5α retroviral restriction factor activates Ubc13, the K63-linkage-specific E2. Structural, biochemical, and functional characterization of the TRIM5α:Ubc13-Ub interactions reveals that activation of the Ubc13-Ub conjugate requires dimerization of the TRIM5α RING domain. Our data explain how higher-order oligomerization of TRIM5α, which is promoted by the interaction with the retroviral capsid, enhances the E3 Ub ligase activity of TRIM5α and contributes to its antiretroviral function. This E3 mechanism, in which RING dimerization is transient and depends on the interaction of the TRIM protein with the ligand, is likely to be conserved in many members of the TRIM family and may have evolved to facilitate recognition of repetitive epitope patterns associated with infection.


  • Organizational Affiliation

    Department of Biochemistry, University of Texas Health Science Center, San Antonio, TX 78229, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Ubiquitin-conjugating enzyme E2 N153Homo sapiensMutation(s): 0 
Gene Names: UBE2NBLU
EC: 6.3.2.19
UniProt & NIH Common Fund Data Resources
Find proteins for P61088 (Homo sapiens)
Explore P61088 
Go to UniProtKB:  P61088
PHAROS:  P61088
GTEx:  ENSG00000177889 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP61088
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Tripartite motif-containing protein 593Macaca mulattaMutation(s): 0 
Gene Names: TRIM5
EC: 6.3.2
UniProt
Find proteins for Q0PF16 (Macaca mulatta)
Explore Q0PF16 
Go to UniProtKB:  Q0PF16
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ0PF16
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.08 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.226 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 78.17α = 90
b = 78.17β = 90
c = 82.562γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-07-22
    Type: Initial release
  • Version 1.1: 2017-09-27
    Changes: Author supporting evidence, Derived calculations, Source and taxonomy
  • Version 1.2: 2020-03-04
    Changes: Database references
  • Version 1.3: 2023-12-27
    Changes: Data collection, Database references