1ILT

X-RAY STRUCTURE OF INTERLEUKIN-1 RECEPTOR ANTAGONIST AT 2.0 ANGSTROMS RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Work: 0.236 
  • R-Value Observed: 0.236 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

X-ray structure of interleukin-1 receptor antagonist at 2.0-A resolution.

Vigers, G.P.Caffes, P.Evans, R.J.Thompson, R.C.Eisenberg, S.P.Brandhuber, B.J.

(1994) J Biol Chem 269: 12874-12879

  • Primary Citation of Related Structures:  
    1ILT

  • PubMed Abstract: 

    Interleukin-1 receptor antagonist (IL-1ra) is a natural competitive antagonist of IL-1. In order to further elucidate the mechanism by which IL-1ra binds without activating the IL-1 receptor, we have solved the crystal structure of IL-1ra at 2.0-A resolution. IL-1ra has the same overall beta-trefoil fold as IL-1 alpha and IL-1 beta and has a very similar hydrophobic core. However, there are a number of structural differences between the molecules, including significant differences at the open end of the beta-barrel, which has been identified in IL-1 beta as a receptor binding site.


  • Organizational Affiliation

    Synergen, Inc., Boulder, Colorado 80301.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
INTERLEUKIN-1 RECEPTOR ANTAGONIST
A, B
152Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P18510 (Homo sapiens)
Explore P18510 
Go to UniProtKB:  P18510
PHAROS:  P18510
GTEx:  ENSG00000136689 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP18510
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Work: 0.236 
  • R-Value Observed: 0.236 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 71.11α = 90
b = 71.11β = 90
c = 112.61γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1995-04-01
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-11-29
    Changes: Derived calculations, Other
  • Version 1.4: 2024-02-07
    Changes: Data collection, Database references