Experimental Data Snapshot

  • Resolution: 2.30 Å
  • R-Value Work: 0.190 

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Structure of interleukin 1 alpha at 2.7-A resolution.

Graves, B.J.Hatada, M.H.Hendrickson, W.A.Miller, J.K.Madison, V.S.Satow, Y.

(1990) Biochemistry 29: 2679-2684

  • DOI: https://doi.org/10.1021/bi00463a009
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The interleukin 1 (IL-1) family of proteins has a central role in modulating immune and inflammatory responses. Two major IL-1 proteins, designated alpha (IL-1 alpha) and beta (IL-1 beta), are produced by activated macrophages and other cell types. In an effort to understand the similarities and differences in the physicochemical and functional properties of these two proteins, a program was initiated to determine their structures. Crystals of IL-1 alpha were grown, and the three-dimensional structure at 2.7-A resolution was solved. The technique of multiple-wavelength anomalous dispersion (MAD) with the selenomethionine form of IL-1 alpha was utilized in combination with a single mercury derivative to provide the starting phases. Partial refinement of the IL-1 alpha model has been performed as well. The overall structure is composed of 14 beta-strands and a 3(10) helix. The core of this structure is a capped beta-barrell that possesses 3-fold symmetry and displays a topology similar to that observed for IL-1 beta [Priestle, J. P., et al. (1988) EMBO J. 7, 339-343] and soybean trypsin inhibitor (STI) [McLachlan, A. D. (1979) J. Mol. Biol. 133, 557-563]. In this paper, the overall structure of IL-1 alpha and the nature and fidelity of the internal 3-fold symmetry are discussed. Comparisons with IL-1 beta and STI are made within these contexts.

  • Organizational Affiliation

    Roche Research Center, Hoffmann-La Roche Inc., Nutley, New Jersey 07110.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
INTERLEUKIN-1 ALPHA155Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P01583 (Homo sapiens)
Explore P01583 
Go to UniProtKB:  P01583
PHAROS:  P01583
GTEx:  ENSG00000115008 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01583
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.30 Å
  • R-Value Work: 0.190 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 31.97α = 90
b = 54.52β = 108.63
c = 45.63γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1992-10-15
    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: 2024-02-21
    Changes: Data collection, Database references, Other