3WO2

Crystal structure of human interleukin-18


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.33 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.221 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

The structural basis for receptor recognition of human interleukin-18

Tsutsumi, N.Kimura, T.Arita, K.Ariyoshi, M.Ohnishi, H.Yamamoto, T.Zuo, X.Maenaka, K.Park, E.Y.Kondo, N.Shirakawa, M.Tochio, H.Kato, Z.

(2014) Nat Commun 5: 5340-5340

  • DOI: 10.1038/ncomms6340
  • Primary Citation of Related Structures:  
    3WO3, 3WO4, 3WO2

  • PubMed Abstract: 
  • Interleukin (IL)-18 is a proinflammatory cytokine that belongs to the IL-1 family and plays an important role in inflammation. The uncontrolled release of this cytokine is associated with severe chronic inflammatory disease. IL-18 forms a signalling complex with the IL-18 receptor α (Rα) and β (Rβ) chains at the plasma membrane, which induces multiple inflammatory cytokines ...

    Interleukin (IL)-18 is a proinflammatory cytokine that belongs to the IL-1 family and plays an important role in inflammation. The uncontrolled release of this cytokine is associated with severe chronic inflammatory disease. IL-18 forms a signalling complex with the IL-18 receptor α (Rα) and β (Rβ) chains at the plasma membrane, which induces multiple inflammatory cytokines. Here, we present a crystal structure of human IL-18 bound to the two receptor extracellular domains. Generally, the receptors' recognition mode for IL-18 is similar to IL-1β; however, certain notable differences were observed. The architecture of the IL-18 receptor second domain (D2) is unique among the other IL-1R family members, which presumably distinguishes them from the IL-1 receptors that exhibit a more promiscuous ligand recognition mode. The structures and associated biochemical and cellular data should aid in developing novel drugs to neutralize IL-18 activity.


    Organizational Affiliation

    1] Department of Pediatrics, Graduate School of Medicine, Gifu University, Yanagido 1-1, Gifu 501-1194, Japan [2] Biomedical Informatics, Medical Information Sciences Division, The United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1194, Japan.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Interleukin-18A, B, C, D157Homo sapiensMutation(s): 0 
Gene Names: IL18IGIFIL1F4
UniProt & NIH Common Fund Data Resources
Find proteins for Q14116 (Homo sapiens)
Explore Q14116 
Go to UniProtKB:  Q14116
PHAROS:  Q14116
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CPS (Subject of Investigation/LOI)
Query on CPS

Download Ideal Coordinates CCD File 
E [auth A] , F [auth A] , G [auth A] , J [auth B] , K [auth B] , L [auth B] , N [auth C] , O [auth C] , 
E [auth A],  F [auth A],  G [auth A],  J [auth B],  K [auth B],  L [auth B],  N [auth C],  O [auth C],  P [auth C],  R [auth D],  S [auth D],  T [auth D]
3-[(3-CHOLAMIDOPROPYL)DIMETHYLAMMONIO]-1-PROPANESULFONATE
C32 H58 N2 O7 S
UMCMPZBLKLEWAF-BCTGSCMUSA-N
 Ligand Interaction
SO4
Query on SO4

Download Ideal Coordinates CCD File 
H [auth A], I [auth A], M [auth B], Q [auth C]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.33 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.221 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.146α = 90
b = 79.511β = 100.97
c = 73.46γ = 90
Software Package:
Software NamePurpose
BSSdata collection
PHASERphasing
BUSTERrefinement
XDSdata reduction
SCALAdata scaling

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-12-17
    Type: Initial release
  • Version 1.1: 2016-01-20
    Changes: Database references