5IEA

TRIM5 B-box2 and coiled-coil chimera


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.26 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.260 
  • R-Value Observed: 0.265 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Mechanism of B-box 2 domain-mediated higher-order assembly of the retroviral restriction factor TRIM5 alpha.

Wagner, J.M.Roganowicz, M.D.Skorupka, K.Alam, S.L.Christensen, D.E.Doss, G.L.Wan, Y.Frank, G.A.Ganser-Pornillos, B.K.Sundquist, W.I.Pornillos, O.

(2016) Elife 5

  • DOI: 10.7554/eLife.16309
  • Primary Citation of Related Structures:  
    5F7T, 5EIU, 5IEA

  • PubMed Abstract: 
  • Restriction factors and pattern recognition receptors are important components of intrinsic cellular defenses against viral infection. Mammalian TRIM5α proteins are restriction factors and receptors that target the capsid cores of retroviruses and activate ubiquitin-dependent antiviral responses upon capsid recognition ...

    Restriction factors and pattern recognition receptors are important components of intrinsic cellular defenses against viral infection. Mammalian TRIM5α proteins are restriction factors and receptors that target the capsid cores of retroviruses and activate ubiquitin-dependent antiviral responses upon capsid recognition. Here, we report crystallographic and functional studies of the TRIM5α B-box 2 domain, which mediates higher-order assembly of TRIM5 proteins. The B-box can form both dimers and trimers, and the trimers can link multiple TRIM5α proteins into a hexagonal net that matches the lattice arrangement of capsid subunits and enables avid capsid binding. Two modes of conformational flexibility allow TRIM5α to accommodate the variable curvature of retroviral capsids. B-box mediated interactions also modulate TRIM5α's E3 ubiquitin ligase activity, by stereochemically restricting how the N-terminal RING domain can dimerize. Overall, these studies define important molecular details of cellular recognition of retroviruses, and how recognition links to downstream processes to disable the virus.


    Organizational Affiliation

    Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, United States.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Tripartite motif-containing protein 5, Serine--tRNA ligase ChimeraA, B, C, D, E [auth F], F [auth K]141Macaca mulattaThermus thermophilus HB27Mutation(s): 0 
Gene Names: TRIM5serSTT_C0520
EC: 6.3.2 (PDB Primary Data), 6.1.1.11 (PDB Primary Data), 2.3.2.27 (UniProt)
UniProt
Find proteins for P34945 (Thermus thermophilus (strain ATCC BAA-163 / DSM 7039 / HB27))
Explore P34945 
Go to UniProtKB:  P34945
Find proteins for Q0PF16 (Macaca mulatta)
Explore Q0PF16 
Go to UniProtKB:  Q0PF16
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.26 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.260 
  • R-Value Observed: 0.265 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 71.227α = 90
b = 71.486β = 90
c = 213.834γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-06-15
    Type: Initial release
  • Version 1.1: 2017-09-27
    Changes: Author supporting evidence, Derived calculations