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 

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.USA 111: 2494-2499

  • DOI: 10.1073/pnas.1318962111

  • 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 ele ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tripartite motif-containing 25 variant
A, B
191Homo sapiensMutation(s): 0 
Gene Names: TRIM25 (EFP, RNF147, ZNF147)
EC: 6.3.2.n3
Find proteins for Q14258 (Homo sapiens)
Go to Gene View: TRIM25
Go to UniProtKB:  Q14258
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.59 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.203 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 57.669α = 90.00
b = 83.158β = 90.00
c = 92.851γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
PHENIXmodel building
HKL-2000data reduction
PHENIXphasing
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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