7UWM

Structure of the IL-17A-IL-17RA binary complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Organizing structural principles of the IL-17 ligand-receptor axis.

Wilson, S.C.Caveney, N.A.Yen, M.Pollmann, C.Xiang, X.Jude, K.M.Hafer, M.Tsutsumi, N.Piehler, J.Garcia, K.C.

(2022) Nature 609: 622-629

  • DOI: https://doi.org/10.1038/s41586-022-05116-y
  • Primary Citation of Related Structures:  
    7UWJ, 7UWK, 7UWL, 7UWM, 7UWN

  • PubMed Abstract: 

    The IL-17 family of cytokines and receptors have central roles in host defence against infection and development of inflammatory diseases 1 . The compositions and structures of functional IL-17 family ligand-receptor signalling assemblies remain unclear. IL-17E (also known as IL-25) is a key regulator of type 2 immune responses and driver of inflammatory diseases, such as allergic asthma, and requires both IL-17 receptor A (IL-17RA) and IL-17RB to elicit functional responses 2 . Here we studied IL-25-IL-17RB binary and IL-25-IL-17RB-IL-17RA ternary complexes using a combination of cryo-electron microscopy, single-molecule imaging and cell-based signalling approaches. The IL-25-IL-17RB-IL-17RA ternary signalling assembly is a C2-symmetric complex in which the IL-25-IL-17RB homodimer is flanked by two 'wing-like' IL-17RA co-receptors through a 'tip-to-tip' geometry that is the key receptor-receptor interaction required for initiation of signal transduction. IL-25 interacts solely with IL-17RB to allosterically promote the formation of the IL-17RB-IL-17RA tip-to-tip interface. The resulting large separation between the receptors at the membrane-proximal level may reflect proximity constraints imposed by the intracellular domains for signalling. Cryo-electron microscopy structures of IL-17A-IL-17RA and IL-17A-IL-17RA-IL-17RC complexes reveal that this tip-to-tip architecture is a key organizing principle of the IL-17 receptor family. Furthermore, these studies reveal dual actions for IL-17RA sharing among IL-17 cytokine complexes, by either directly engaging IL-17 cytokines or alternatively functioning as a co-receptor.


  • Organizational Affiliation

    Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Interleukin-17A
A, B, D, E
169Homo sapiensMutation(s): 0 
Gene Names: IL17ACTLA8IL17
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for Q16552 (Homo sapiens)
Explore Q16552 
Go to UniProtKB:  Q16552
PHAROS:  Q16552
GTEx:  ENSG00000112115 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ16552
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Interleukin-17 receptor A
C, F
272Homo sapiensMutation(s): 0 
Gene Names: IL17RAIL17R
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for Q96F46 (Homo sapiens)
Explore Q96F46 
Go to UniProtKB:  Q96F46
PHAROS:  Q96F46
GTEx:  ENSG00000177663 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ96F46
Glycosylation
Glycosylation Sites: 5Go to GlyGen: Q96F46-1
Sequence Annotations
Expand
  • Reference Sequence
Oligosaccharides

Help

Entity ID: 3
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
G
2N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesR01-AI51321

Revision History  (Full details and data files)

  • Version 1.0: 2022-07-27
    Type: Initial release
  • Version 1.1: 2022-08-03
    Changes: Database references
  • Version 1.2: 2022-09-07
    Changes: Database references
  • Version 1.3: 2022-09-28
    Changes: Database references
  • Version 1.4: 2024-11-06
    Changes: Data collection, Structure summary