4KXF

Crystal structure of NLRC4 reveals its autoinhibition mechanism


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.226 
  • R-Value Observed: 0.228 

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Literature

Crystal structure of NLRC4 reveals its autoinhibition mechanism

Hu, Z.Yan, C.Liu, P.Huang, Z.Ma, R.Zhang, C.Wang, R.Zhang, Y.Martinon, F.Miao, D.Deng, H.Wang, J.Chang, J.Chai, J.

(2013) Science 341: 172-175

  • DOI: 10.1126/science.1236381
  • Primary Citation of Related Structures:  
    4KXF

  • PubMed Abstract: 
  • Nucleotide-binding and oligomerization domain-like receptor (NLR) proteins oligomerize into multiprotein complexes termed inflammasomes when activated. Their autoinhibition mechanism remains poorly defined. Here, we report the crystal structure of mouse NLRC4 in a closed form ...

    Nucleotide-binding and oligomerization domain-like receptor (NLR) proteins oligomerize into multiprotein complexes termed inflammasomes when activated. Their autoinhibition mechanism remains poorly defined. Here, we report the crystal structure of mouse NLRC4 in a closed form. The adenosine diphosphate-mediated interaction between the central nucleotide-binding domain (NBD) and the winged-helix domain (WHD) was critical for stabilizing the closed conformation of NLRC4. The helical domain HD2 repressively contacted a conserved and functionally important α-helix of the NBD. The C-terminal leucine-rich repeat (LRR) domain is positioned to sterically occlude one side of the NBD domain and consequently sequester NLRC4 in a monomeric state. Disruption of ADP-mediated NBD-WHD or NBD-HD2/NBD-LRR interactions resulted in constitutive activation of NLRC4. Together, our data reveal the NBD-organized cooperative autoinhibition mechanism of NLRC4 and provide insight into its activation.


    Organizational Affiliation

    School of Life Sciences, Tsinghua University, and Tsinghua-Peking Center for Life Sciences, Beijing 100084, China.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
NLR family CARD domain-containing protein 41024Mus musculusMutation(s): 0 
Gene Names: Nlrc4Card12Ipaf
UniProt
Find proteins for Q3UP24 (Mus musculus)
Explore Q3UP24 
Go to UniProtKB:  Q3UP24
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ3UP24
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
A [auth K],
B,
C [auth D],
D [auth F],
E [auth H],
A [auth K],
B,
C [auth D],
D [auth F],
E [auth H],
F [auth L],
G [auth N],
H [auth P]
L-PEPTIDE LINKINGC3 H8 N O6 PSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.226 
  • R-Value Observed: 0.228 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 334.052α = 90
b = 334.052β = 90
c = 177.567γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
SOLVEphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2013-05-25 
  • Released Date: 2013-07-24 
  • Deposition Author(s): Chai, J., Hu, Z.

Revision History  (Full details and data files)

  • Version 1.0: 2013-07-24
    Type: Initial release