Crystal structure of wildtype human Interleukin-4

Experimental Data Snapshot

  • Resolution: 1.80 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.212 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


A modular interface of IL-4 allows for scalable affinity without affecting specificity for the IL-4 receptor

Kraich, M.Klein, M.Patino, E.Harrer, H.Nickel, J.Sebald, W.Mueller, T.D.

(2006) BMC Biol 4: 13-13

  • DOI: https://doi.org/10.1186/1741-7007-4-13
  • Primary Citation of Related Structures:  
    2B8U, 2B8X, 2B8Y, 2B8Z, 2B90, 2B91, 2D48

  • PubMed Abstract: 

    Interleukin 4 (IL-4) is a key regulator of the immune system and an important factor in the development of allergic hypersensitivity. Together with interleukin 13 (IL-13), IL-4 plays an important role in exacerbating allergic and asthmatic symptoms. For signal transduction, both cytokines can utilise the same receptor, consisting of the IL-4Ralpha and the IL-13Ralpha1 chain, offering an explanation for their overlapping biological functions. Since both cytokine ligands share only moderate similarity on the amino acid sequence level, molecular recognition of the ligands by both receptor subunits is of great interest. IL-4 and IL-13 are interesting targets for allergy and asthma therapies. Knowledge of the binding mechanism will be important for the generation of either IL-4 or IL-13 specific drugs.

  • Organizational Affiliation

    Lehrstuhl für Physiologische Chemie II, Theodor-Boveri Institut für Biowissenschaften (Biozentrum) der Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany. kraich@biozentrum.uni-wuerzburg.de

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Interleukin-4129Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P05112 (Homo sapiens)
Explore P05112 
Go to UniProtKB:  P05112
PHAROS:  P05112
GTEx:  ENSG00000113520 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP05112
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.80 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.212 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 90.545α = 90
b = 90.545β = 90
c = 46.071γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
CCP4data scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-05-30
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.3: 2023-10-25
    Changes: Data collection, Database references, Derived calculations, Refinement description