4DOH

IL20/IL201/IL20R2 Ternary Complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.230 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural basis for receptor sharing and activation by interleukin-20 receptor-2 (IL-20R2) binding cytokines.

Logsdon, N.J.Deshpande, A.Harris, B.D.Rajashankar, K.R.Walter, M.R.

(2012) Proc.Natl.Acad.Sci.USA 109: 12704-12709

  • DOI: 10.1073/pnas.1117551109

  • PubMed Abstract: 
  • Interleukin 20 (IL-20) is a pleotropic IL-10 family cytokine that protects epithelial surfaces from pathogens. However, dysregulated IL-20 signaling is implicated in several human pathologies including psoriasis, rheumatoid arthritis, atherosclerosis ...

    Interleukin 20 (IL-20) is a pleotropic IL-10 family cytokine that protects epithelial surfaces from pathogens. However, dysregulated IL-20 signaling is implicated in several human pathologies including psoriasis, rheumatoid arthritis, atherosclerosis, and osteoporosis. IL-20, and related cytokines IL-19 and IL-24, designated IL-20 subfamily cytokines (IL-20SFCs), induce cellular responses through an IL-20R1/IL-20R2 (type I) receptor heterodimer, whereas IL-20 and IL-24 also signal through the IL-22R1/IL-20R2 (type II) receptor complex. The crystal structure of the IL-20/IL-20R1/IL-20R2 complex reveals how type I and II complexes discriminate cognate from noncognate ligands. The structure also defines how the receptor-cytokine interfaces are affinity tuned to allow distinct signaling through a receptor complex shared by three different ligands. Our results provide unique insights into the complexity of IL-20SFC signaling that may be critical in the design of mechanistic-based inhibitors of IL-20SFC-mediated inflammatory disease.


    Organizational Affiliation

    Center for Biophysical Sciences, University of Alabama, Birmingham, AL 35294, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Interleukin-20
A, C
153Homo sapiensMutation(s): 0 
Gene Names: IL20 (ZCYTO10)
Find proteins for Q9NYY1 (Homo sapiens)
Go to Gene View: IL20
Go to UniProtKB:  Q9NYY1
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Interleukin-20 receptor subunit beta
B, D
206Homo sapiensMutation(s): 2 
Gene Names: IL20RB (DIRS1)
Find proteins for Q6UXL0 (Homo sapiens)
Go to Gene View: IL20RB
Go to UniProtKB:  Q6UXL0
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Interleukin-20 receptor subunit alpha
R, E
221Homo sapiensMutation(s): 2 
Gene Names: IL20RA
Find proteins for Q9UHF4 (Homo sapiens)
Go to Gene View: IL20RA
Go to UniProtKB:  Q9UHF4
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download SDF File 
Download CCD File 
B, D, E, R
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.230 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 103.115α = 90.00
b = 111.764β = 90.00
c = 136.334γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
PHENIXphasing
MAR345dtbdata collection
HKL-2000data reduction
PHENIXmodel building
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-07-18
    Type: Initial release
  • Version 1.1: 2012-08-08
    Type: Database references
  • Version 1.2: 2013-01-02
    Type: Database references
  • Version 1.3: 2013-10-16
    Type: Other