4LTB

Coiled-coil domain of TRIM25


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.59 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.208 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

The tripartite motif coiled-coil is an elongated antiparallel hairpin dimer.

Sanchez, J.G.Okreglicka, K.Chandrasekaran, V.Welker, J.M.Sundquist, W.I.Pornillos, O.

(2014) Proc Natl Acad Sci U S A 111: 2494-2499

  • DOI: 10.1073/pnas.1318962111
  • Primary Citation of Related Structures:  
    4LTB

  • PubMed Abstract: 
  • Tripartite motif (TRIM) proteins make up a large family of coiled-coil-containing RING E3 ligases that function in many cellular processes, particularly innate antiviral response pathways. Both dimerization and higher-order assembly are important elements of TRIM protein function, but the atomic details of TRIM tertiary and quaternary structure have not been fully understood ...

    Tripartite motif (TRIM) proteins make up a large family of coiled-coil-containing RING E3 ligases that function in many cellular processes, particularly innate antiviral response pathways. Both dimerization and higher-order assembly are important elements of TRIM protein function, but the atomic details of TRIM tertiary and quaternary structure have not been fully understood. Here, we present crystallographic and biochemical analyses of the TRIM coiled-coil and show that TRIM proteins dimerize by forming interdigitating antiparallel helical hairpins that position the N-terminal catalytic RING domains at opposite ends of the dimer and the C-terminal substrate-binding domains at the center. The dimer core comprises an antiparallel coiled-coil with a distinctive, symmetric pattern of flanking heptad and central hendecad repeats that appear to be conserved across the entire TRIM family. Our studies reveal how the coiled-coil organizes TRIM25 to polyubiquitylate the RIG-I/viral RNA recognition complex and how dimers of the TRIM5α protein are arranged within hexagonal arrays that recognize the HIV-1 capsid lattice and restrict retroviral replication.


    Organizational Affiliation

    Department of Molecular Physiology and Biological Physics and The Myles H. Thaler Center for AIDS and Human Retrovirus Research, University of Virginia, Charlottesville, VA 22908.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Tripartite motif-containing 25 variantA, B191Homo sapiensMutation(s): 0 
Gene Names: TRIM25EFPRNF147ZNF147
EC: 6.3.2 (UniProt), 2.3.2.27 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q14258 (Homo sapiens)
Explore Q14258 
Go to UniProtKB:  Q14258
PHAROS:  Q14258
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.59 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.208 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 57.669α = 90
b = 83.158β = 90
c = 92.851γ = 90
Software Package:
Software NamePurpose
PHENIXmodel building
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-02-05
    Type: Initial release
  • Version 1.1: 2014-03-19
    Changes: Database references