4CG4

Crystal structure of the CHS-B30.2 domains of TRIM20


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.214 

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This is version 2.0 of the entry. See complete history


Literature

Crystal Structure of Trim20 C-Terminal Coiled-Coil/B30.2 Fragment: Implications for the Recognition of Higher Order Oligomers

Weinert, C.Morger, D.Djekic, A.Mittl, P.R.E.Gruetter, M.G.

(2015) Sci Rep 5: 10819

  • DOI: 10.1038/srep10819
  • Primary Citation of Related Structures:  
    4CG4

  • PubMed Abstract: 
  • Many tripartite motif-containing (TRIM) proteins, comprising RING-finger, B-Box, and coiled-coil domains, carry additional B30.2 domains on the C-terminus of the TRIM motif and are considered to be pattern recognition receptors involved in the detection of higher order oligomers (e ...

    Many tripartite motif-containing (TRIM) proteins, comprising RING-finger, B-Box, and coiled-coil domains, carry additional B30.2 domains on the C-terminus of the TRIM motif and are considered to be pattern recognition receptors involved in the detection of higher order oligomers (e.g. viral capsid proteins). To investigate the spatial architecture of domains in TRIM proteins we determined the crystal structure of the TRIM20Δ413 fragment at 2.4 Å resolution. This structure comprises the central helical scaffold (CHS) and C-terminal B30.2 domains and reveals an anti-parallel arrangement of CHS domains placing the B-box domains 170 Å apart from each other. Small-angle X-ray scattering confirmed that the linker between CHS and B30.2 domains is flexible in solution. The crystal structure suggests an interaction between the B30.2 domain and an extended stretch in the CHS domain, which involves residues that are mutated in the inherited disease Familial Mediterranean Fever. Dimerization of B30.2 domains by means of the CHS domain is crucial for TRIM20 to bind pro-IL-1β in vitro. To exemplify how TRIM proteins could be involved in binding higher order oligomers we discuss three possible models for the TRIM5α/HIV-1 capsid interaction assuming different conformations of B30.2 domains.


    Organizational Affiliation

    Department of Biochemistry, University Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PYRIN ABCDEF377Homo sapiensMutation(s): 0 
Gene Names: MEFVMEFTRIM20
Find proteins for O15553 (Homo sapiens)
Explore O15553 
Go to UniProtKB:  O15553
NIH Common Fund Data Resources
PHAROS:  O15553
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.214 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.82α = 90
b = 388.21β = 116.52
c = 70.88γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-04-29
    Type: Initial release
  • Version 1.1: 2015-05-20
    Changes: Database references
  • Version 1.2: 2015-06-17
    Changes: Database references
  • Version 2.0: 2019-10-23
    Changes: Atomic model, Data collection, Derived calculations, Other