4R6U

IL-18 receptor complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.233 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural basis for the specific recognition of IL-18 by its alpha receptor.

Wei, H.Wang, D.Qian, Y.Liu, X.Fan, S.Yin, H.S.Wang, X.

(2014) Febs Lett. 588: 3838-3843

  • DOI: 10.1016/j.febslet.2014.09.019

  • PubMed Abstract: 
  • Interleukin 18 (IL-18), a member of the IL-1 family of cytokines, is an important regulator of innate and acquired immune responses. It signals through its ligand-binding primary receptor IL-18Rα and accessory receptor IL-18Rβ. Here we report the cry ...

    Interleukin 18 (IL-18), a member of the IL-1 family of cytokines, is an important regulator of innate and acquired immune responses. It signals through its ligand-binding primary receptor IL-18Rα and accessory receptor IL-18Rβ. Here we report the crystal structure of IL-18 with the ectodomain of IL-18Rα, which reveals the structural basis for their specific recognition. It confirms that surface charge complementarity determines the ligand-binding specificity of primary receptors in the IL-1 receptor family. We suggest that IL-18 signaling complex adopts an architecture similar to other agonistic cytokines and propose a general ligand-receptor assembly and activation model for the IL-1 family.


    Organizational Affiliation

    Ministry of Education Key Laboratory of Protein Science, Center for Structural Biology, Collaborative Innovation Center for Biotherapy, School of Life Sciences, Tsinghua University, Beijing 100084, China; Collaborative Innovation Center for Biotherapy, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Interleukin-18 receptor 1
C, A
317Homo sapiensMutation(s): 0 
Gene Names: IL18R1 (IL1RRP)
Find proteins for Q13478 (Homo sapiens)
Go to Gene View: IL18R1
Go to UniProtKB:  Q13478
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Interleukin-18
B, D
157Homo sapiensMutation(s): 4 
Gene Names: IL18 (IGIF, IL1F4)
Find proteins for Q14116 (Homo sapiens)
Go to Gene View: IL18
Go to UniProtKB:  Q14116
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download SDF File 
Download CCD File 
A, C
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: 0.282 
  • R-Value Work: 0.233 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 71.392α = 90.00
b = 85.603β = 97.60
c = 88.117γ = 90.00
Software Package:
Software NamePurpose
ADSCdata collection
HKL-2000data reduction
HKL-2000data scaling
PHENIXrefinement
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2014-08-26 
  • Released Date: 2014-10-15 
  • Deposition Author(s): Wei, H., Wang, X.

Revision History 

  • Version 1.0: 2014-10-15
    Type: Initial release
  • Version 1.1: 2014-12-17
    Type: Database references