8DPV

The crystal structure of Interleukin-11, W147A mutant


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.48 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.184 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structures of the interleukin 11 signalling complex reveal gp130 dynamics and the inhibitory mechanism of a cytokine variant.

Metcalfe, R.D.Hanssen, E.Fung, K.Y.Aizel, K.Kosasih, C.C.Zlatic, C.O.Doughty, L.Morton, C.J.Leis, A.P.Parker, M.W.Gooley, P.R.Putoczki, T.L.Griffin, M.D.W.

(2023) Nat Commun 14: 7543-7543

  • DOI: https://doi.org/10.1038/s41467-023-42754-w
  • Primary Citation of Related Structures:  
    8DPS, 8DPT, 8DPU, 8DPV, 8DPW

  • PubMed Abstract: 

    Interleukin (IL-)11, an IL-6 family cytokine, has pivotal roles in autoimmune diseases, fibrotic complications, and solid cancers. Despite intense therapeutic targeting efforts, structural understanding of IL-11 signalling and mechanistic insights into current inhibitors are lacking. Here we present cryo-EM and crystal structures of the human IL-11 signalling complex, including the complex containing the complete extracellular domains of the shared IL-6 family β-receptor, gp130. We show that complex formation requires conformational reorganisation of IL-11 and that the membrane-proximal domains of gp130 are dynamic. We demonstrate that the cytokine mutant, IL-11 Mutein, competitively inhibits signalling in human cell lines. Structural shifts in IL-11 Mutein underlie inhibition by altering cytokine binding interactions at all three receptor-engaging sites and abrogating the final gp130 binding step. Our results reveal the structural basis of IL-11 signalling, define the molecular mechanisms of an inhibitor, and advance understanding of gp130-containing receptor complexes, with potential applications in therapeutic development.


  • Organizational Affiliation

    Department of Biochemistry and Pharmacology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, Victoria, 3010, Australia.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Interleukin-11169Homo sapiensMutation(s): 1 
Gene Names: IL11
UniProt & NIH Common Fund Data Resources
Find proteins for P20809 (Homo sapiens)
Explore P20809 
Go to UniProtKB:  P20809
PHAROS:  P20809
GTEx:  ENSG00000095752 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP20809
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.48 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.184 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 38.505α = 90
b = 133.996β = 90
c = 27.087γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
Aimlessdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Health and Medical Research Council (NHMRC, Australia)AustraliaAPP1147621

Revision History  (Full details and data files)

  • Version 1.0: 2023-11-29
    Type: Initial release
  • Version 1.1: 2024-05-01
    Changes: Database references