4P0L

Crystal Structure of Double Loop-Swapped Interleukin-36Ra With Additional Point Mutations


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.182 

Starting Model: experimental
View more details

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Molecular Determinants of Agonist and Antagonist Signaling through the IL-36 Receptor.

Gunther, S.Sundberg, E.J.

(2014) J Immunol 193: 921-930

  • DOI: https://doi.org/10.4049/jimmunol.1400538
  • Primary Citation of Related Structures:  
    4IZE, 4P0J, 4P0K, 4P0L

  • PubMed Abstract: 

    The IL-1 family consists of 11 cytokines that control a complex network of proinflammatory signals critical for regulating immune responses to infections. They also play a central role in numerous chronic inflammatory disorders. Accordingly, inhibiting the activities of these cytokines is an important therapeutic strategy for treating autoimmune diseases and lymphomas. Agonist cytokines in the IL-1 family activate signaling by binding their cognate receptor and then recruiting a receptor accessory protein. Conversely, antagonist cytokines bind their cognate receptor but prohibit recruitment of receptor accessory protein, which precludes functional signaling complexes. The IL-36 subfamily of cytokines is the most diverse, including three agonists and at least one antagonist, and is the least well-characterized group within this family. Signaling through the IL-36 receptor directly stimulates dendritic cells and primes naive CD4 T cells for Th1 responses. Appropriately balanced IL-36 signaling is a critical determinant of skin and lung health. IL-36 signaling has been presumed to function analogously to IL-1 signaling. In this study, we have defined molecular determinants of agonist and antagonist signaling through the IL-36 receptor. We present the crystal structure of IL-36γ, which, to our knowledge, is the first reported structure of an IL-36 agonist. Using this structure as a guide, we designed a comprehensive series of IL-36 agonist/antagonist chimeric proteins for which we measured binding to the IL-36 receptor/IL-1 receptor accessory protein complex and functional activation and inhibition of signaling. Our data reveal how the fine specificity of IL-36 signaling is distinct from that of IL-1.


  • Organizational Affiliation

    Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD 21201;


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Interleukin-36 receptor antagonist/Interleukin-36 gamma chimera protein154Homo sapiensMutation(s): 3 
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NZH8 (Homo sapiens)
Explore Q9NZH8 
Go to UniProtKB:  Q9NZH8
PHAROS:  Q9NZH8
GTEx:  ENSG00000136688 
Find proteins for Q9UBH0 (Homo sapiens)
Explore Q9UBH0 
Go to UniProtKB:  Q9UBH0
PHAROS:  Q9UBH0
GTEx:  ENSG00000136695 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsQ9UBH0Q9NZH8
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.182 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 42.773α = 90
b = 42.773β = 90
c = 119.794γ = 120
Software Package:
Software NamePurpose
XDSdata scaling
Aimlessdata scaling
PDB_EXTRACTdata extraction
PHASERphasing
PHENIXrefinement

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
American Asthma FoundationUnited States13-0066

Revision History  (Full details and data files)

  • Version 1.0: 2014-06-25
    Type: Initial release
  • Version 1.1: 2014-07-16
    Changes: Database references
  • Version 1.2: 2015-02-04
    Changes: Derived calculations
  • Version 1.3: 2017-11-22
    Changes: Derived calculations, Other, Refinement description, Source and taxonomy, Structure summary
  • Version 1.4: 2023-09-27
    Changes: Data collection, Database references, Refinement description