4R6U

IL-18 receptor complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.233 
  • R-Value Observed: 0.236 

wwPDB Validation   3D Report Full Report


This is version 1.2 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
  • Primary Citation of Related Structures:  
    4R6U

  • 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 crystal structure of IL-18 with the ectodomain of IL-18Rα, which reveals the structural basis for their specific recognition ...

    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. Electronic address: xinquanwang@mail.tsinghua.edu.cn.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Interleukin-18 receptor 1B [auth A], A [auth C]317Homo sapiensMutation(s): 0 
Gene Names: IL18R1IL1RRP
EC: 3.2.2.6
Find proteins for Q13478 (Homo sapiens)
Explore Q13478 
Go to UniProtKB:  Q13478
NIH Common Fund Data Resources
PHAROS:  Q13478
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Interleukin-18C [auth B], D157Homo sapiensMutation(s): 4 
Gene Names: IL18IGIFIL1F4
Find proteins for Q14116 (Homo sapiens)
Explore Q14116 
Go to UniProtKB:  Q14116
NIH Common Fund Data Resources
PHAROS:  Q14116
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.233 
  • R-Value Observed: 0.236 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 71.392α = 90
b = 85.603β = 97.6
c = 88.117γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
PHASERphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

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

Revision History  (Full details and data files)

  • Version 1.0: 2014-10-15
    Type: Initial release
  • Version 1.1: 2014-12-17
    Changes: Database references
  • Version 1.2: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Database references, Derived calculations, Structure summary