Experimental Data Snapshot

  • Resolution: 2.00 Å
  • R-Value Observed: 0.172 

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This is version 1.4 of the entry. See complete history


Crystallographic refinement of interleukin 1 beta at 2.0 A resolution.

Priestle, J.P.Schar, H.P.Grutter, M.G.

(1989) Proc Natl Acad Sci U S A 86: 9667-9671

  • DOI: https://doi.org/10.1073/pnas.86.24.9667
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The structure of human recombinant interleukin 1 beta (IL-1 beta) has been refined by a restrained least-squares method to a crystallographic R factor of 17.2% to 2.0 A resolution. One-hundred sixty-eight solvent molecules have been located, and isotropic temperature factors for each atom have been refined. The overall structure is composed of 12 beta-strands that can best be described as forming the four triangular faces of a tetrahedron with hydrogen bonding resembling normal antiparallel beta-sheets only at the vertices. The interior of this tetrahedron is filled by hydrophobic side chains. Analysis of sequence alignments with IL-1 beta from other mammalian species shows the interior to be very well conserved with the exterior residues markedly less so. There does not appear to be a clustering of invariant amino acid side chains on the surface of the molecule, suggesting an area of interaction with the IL-1 receptor. Comparison of the IL-1 beta structure with IL-1 alpha sequences indicates that IL-1 alpha probably has a similar overall folding as IL-1 beta but binds to the receptor in a different fashion. The three-dimensional structure of the IL-1 beta is analyzed in light of what has been suggested by previously published work on mutants and fragments of the molecule.

  • Organizational Affiliation

    Pharmaceuticals Research Division, CIBA-Geigy Ltd., Basel, Switzerland.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
INTERLEUKIN-1 BETA153Homo sapiensMutation(s): 0 
Gene Names: IL1BIL1F2
UniProt & NIH Common Fund Data Resources
Find proteins for P01584 (Homo sapiens)
Explore P01584 
Go to UniProtKB:  P01584
PHAROS:  P01584
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01584
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.00 Å
  • R-Value Observed: 0.172 
  • Space Group: P 43
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 54.9α = 90
b = 54.9β = 90
c = 76.8γ = 90
Software Package:
Software NamePurpose

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1990-04-15
    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: 2020-09-09
    Changes: Database references