5NAN

Crystal Structure of human IL-17AF in complex with human IL-17RA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.189 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

The human IL-17A/F heterodimer: a two-faced cytokine with unique receptor recognition properties.

Goepfert, A.Lehmann, S.Wirth, E.Rondeau, J.M.

(2017) Sci Rep 7: 8906-8906

  • DOI: 10.1038/s41598-017-08360-9
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • IL-17A and IL-17F are prominent members of the IL-17 family of cytokines that regulates both innate and adaptive immunity. IL-17A has been implicated in chronic inflammatory and autoimmune diseases, and anti-IL-17A antibodies have shown remarkable cl ...

    IL-17A and IL-17F are prominent members of the IL-17 family of cytokines that regulates both innate and adaptive immunity. IL-17A has been implicated in chronic inflammatory and autoimmune diseases, and anti-IL-17A antibodies have shown remarkable clinical efficacy in psoriasis and psoriatic arthritis patients. IL-17A and IL-17F are homodimeric cytokines that can also form the IL-17A/F heterodimer whose precise role in health and disease remains elusive. All three cytokines signal through the assembly of a ternary complex with the IL-17RA and IL-17RC receptors. Here we report the X-ray analysis of the human IL-17A/F heterodimer that reveals a two-faced cytokine closely mimicking IL-17A as well as IL-17F. We also present the crystal structure of its complex with the IL-17RA receptor. Unexpectedly in view of the much higher affinity of this receptor toward IL-17A, we find that IL-17RA is bound to the "F-face" of the heterodimer in the crystal. Using site-directed mutagenesis, we then demonstrate that IL-17RA can also bind to the "A-face" of IL-17A/F with similar affinity. Further, we show that IL-17RC does not discriminate between the two faces of the cytokine heterodimer either, thus enabling the formation of two topologically-distinct heterotrimeric complexes with potentially different signaling properties.


    Organizational Affiliation

    Novartis Institutes for BioMedical Research, Novartis Pharma AG, CH-4002, Basel, Switzerland. jeanmichel.rondeau@novartis.com.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Interleukin-17A
A, D
132Homo sapiensMutation(s): 0 
Gene Names: IL17ACTLA8IL17
Find proteins for Q16552 (Homo sapiens)
Go to UniProtKB:  Q16552
NIH Common Fund Data Resources
PHAROS  Q16552
Protein Feature View
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Interleukin-17 receptor A
B, C
311Homo sapiensMutation(s): 0 
Gene Names: IL17RAIL17R
Find proteins for Q96F46 (Homo sapiens)
Go to UniProtKB:  Q96F46
NIH Common Fund Data Resources
PHAROS  Q96F46
Protein Feature View
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Interleukin-17F
E, F
139Homo sapiensMutation(s): 0 
Gene Names: IL17F
Find proteins for Q96PD4 (Homo sapiens)
Go to UniProtKB:  Q96PD4
NIH Common Fund Data Resources
PHAROS  Q96PD4
Protein Feature View
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download CCD File 
B, C, E, F
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
GAL
Query on GAL

Download CCD File 
F
BETA-D-GALACTOSE
C6 H12 O6
WQZGKKKJIJFFOK-FPRJBGLDSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.189 
  • Space Group: P 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 100.002α = 90
b = 66.103β = 90.13
c = 104.119γ = 90
Software Package:
Software NamePurpose
XSCALEdata scaling
BUSTERrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-09-06
    Type: Initial release
  • Version 1.1: 2017-09-13
    Changes: Structure summary
  • Version 1.2: 2017-09-20
    Changes: Database references
  • Version 1.3: 2018-01-24
    Changes: Source and taxonomy