4N1K

Crystal structures of NLRP14 pyrin domain reveal a conformational switch mechanism, regulating its molecular interactions


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.216 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structures of the NLRP14 pyrin domain reveal a conformational switch mechanism regulating its molecular interactions.

Eibl, C.Hessenberger, M.Wenger, J.Brandstetter, H.

(2014) Acta Crystallogr D Biol Crystallogr 70: 2007-2018

  • DOI: https://doi.org/10.1107/S1399004714010311
  • Primary Citation of Related Structures:  
    4N1J, 4N1K, 4N1L

  • PubMed Abstract: 

    The cytosolic tripartite NLR receptors serve as important signalling platforms in innate immunity. While the C-terminal domains act as sensor and activation modules, the N-terminal death-like domain, e.g. the CARD or pyrin domain, is thought to recruit downstream effector molecules by homotypic interactions. Such homotypic complexes have been determined for all members of the death-domain superfamily except for pyrin domains. Here, crystal structures of human NLRP14 pyrin-domain variants are reported. The wild-type protein as well as the clinical D86V mutant reveal an unexpected rearrangement of the C-terminal helix α6, resulting in an extended α5/6 stem-helix. This reordering mediates a novel symmetric pyrin-domain dimerization mode. The conformational switching is controlled by a charge-relay system with a drastic impact on protein stability. How the identified charge relay allows classification of NLRP receptors with respect to distinct recruitment mechanisms is discussed.


  • Organizational Affiliation

    Department of Molecular Biology, University of Salzburg, Billrothstrasse 11, 5020 Salzburg, Austria.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
NACHT, LRR and PYD domains-containing protein 14
A, B, C, D
105Homo sapiensMutation(s): 1 
Gene Names: NLRP14NALP14NOD5
UniProt & NIH Common Fund Data Resources
Find proteins for Q86W24 (Homo sapiens)
Explore Q86W24 
Go to UniProtKB:  Q86W24
PHAROS:  Q86W24
GTEx:  ENSG00000158077 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ86W24
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.216 
  • Space Group: P 63
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 89.21α = 90
b = 89.21β = 90
c = 106.571γ = 120
Software Package:
Software NamePurpose
MAR345data collection
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-07-16
    Type: Initial release
  • Version 1.1: 2014-09-24
    Changes: Database references
  • Version 1.2: 2017-11-15
    Changes: Refinement description
  • Version 1.3: 2024-02-28
    Changes: Data collection, Database references