3VA2

Crystal structure of human Interleukin-5 in complex with its alpha receptor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.703 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.223 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structural basis of interleukin-5 dimer recognition by its alpha receptor

Kusano, S.Kukimoto-Niino, M.Hino, N.Ohsawa, N.Ikutani, M.Takaki, S.Sakamoto, K.Hara-Yokoyama, M.Shirouzu, M.Takatsu, K.Yokoyama, S.

(2012) Protein Sci. 21: 850-864

  • DOI: 10.1002/pro.2072

  • PubMed Abstract: 
  • Interleukin-5 (IL-5), a major hematopoietin, stimulates eosinophil proliferation, migration, and activation, which have been implicated in the pathogenesis of allergic inflammatory diseases, such as asthma. The specific IL-5 receptor (IL-5R) consists ...

    Interleukin-5 (IL-5), a major hematopoietin, stimulates eosinophil proliferation, migration, and activation, which have been implicated in the pathogenesis of allergic inflammatory diseases, such as asthma. The specific IL-5 receptor (IL-5R) consists of the IL-5 receptor α subunit (IL-5RA) and the common receptor β subunit (βc). IL-5 binding to IL-5R on target cells induces rapid tyrosine phosphorylation and activation of various cellular proteins, including JAK1/JAK2 and STAT1/STAT5. Here, we report the crystal structure of dimeric IL-5 in complex with the IL-5RA extracellular domains. The structure revealed that IL-5RA sandwiches the IL-5 homodimer by three tandem domains, arranged in a "wrench-like" architecture. This association mode was confirmed for human cells expressing IL-5 and the full-length IL-5RA by applying expanded genetic code technology: protein photo-cross-linking experiments revealed that the two proteins interact with each other in vivo in the same manner as that in the crystal structure. Furthermore, a comparison with the previously reported, partial GM-CSF•GM-CSFRA•βc structure enabled us to propose complete structural models for the IL-5 and GM-CSF receptor complexes, and to identify the residues conferring the cytokine-specificities of IL-5RA and GM-CSFRA.


    Organizational Affiliation

    RIKEN Systems and Structural Biology Center, Tsurumi-ku, Yokohama, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Interleukin-5
A, B
119Homo sapiensMutation(s): 0 
Gene Names: IL5
Find proteins for P05113 (Homo sapiens)
Go to Gene View: IL5
Go to UniProtKB:  P05113
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Interleukin-5 receptor subunit alpha
C
322Homo sapiensMutation(s): 0 
Gene Names: IL5RA (IL5R)
Find proteins for Q01344 (Homo sapiens)
Go to Gene View: IL5RA
Go to UniProtKB:  Q01344
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.703 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.223 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 58.633α = 90.00
b = 88.680β = 90.00
c = 126.674γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
SOLVEphasing
SCALEPACKdata scaling
HKL-2000data collection
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-07-25
    Type: Initial release