1HUL

A NOVEL DIMER CONFIGURATION REVEALED BY THE CRYSTAL STRUCTURE AT 2.4 ANGSTROMS RESOLUTION OF HUMAN INTERLEUKIN-5


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.369 
  • R-Value Work: 0.213 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A novel dimer configuration revealed by the crystal structure at 2.4 A resolution of human interleukin-5.

Milburn, M.V.Hassell, A.M.Lambert, M.H.Jordan, S.R.Proudfoot, A.E.Graber, P.Wells, T.N.

(1993) Nature 363: 172-176

  • DOI: 10.1038/363172a0

  • PubMed Abstract: 
  • Interleukin-5 (IL-5) is a lineage-specific cytokine for eosinophilpoiesis and plays an important part in diseases associated with increased eosinophils, such as asthma. Human IL-5 is a disulphide-linked homodimer with 115 amino-acid residues in each ...

    Interleukin-5 (IL-5) is a lineage-specific cytokine for eosinophilpoiesis and plays an important part in diseases associated with increased eosinophils, such as asthma. Human IL-5 is a disulphide-linked homodimer with 115 amino-acid residues in each chain. The crystal structure at 2.4 A resolution reveals a novel two-domain structure, with each domain showing a striking similarity to the cytokine fold found in granulocyte macrophage and macrophage colony-stimulating factors, IL-2 (ref. 5), IL-4 (ref. 6), and human and porcine growth hormones. IL-5 is unique in that each domain requires the participation of two chains. The IL-5 structure consists of two left-handed bundles of four helices laid end to end and two short beta-sheets on opposite sides of the molecule. Surprisingly, the C-terminal strand and helix of one chain complete a bundle of four helices and a beta-sheet with the N-terminal three helices and one strand of the other chain. The structure of IL-5 provides a molecular basis for the design of antagonists and agonists that would delineate receptor recognition determinants critical in signal transduction. This structure determination extends the family of the cytokine bundle of four helices and emphasizes its fundamental significance and versatility in recognizing its receptor.


    Organizational Affiliation

    Laboratory of Molecular Medicine, Children's Hospital/Ender 673, Boston, Massachusetts 02115-5737.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
INTERLEUKIN-5
A, B
108Homo sapiensMutation(s): 0 
Gene Names: IL5
Find proteins for P05113 (Homo sapiens)
Go to Gene View: IL5
Go to UniProtKB:  P05113
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.369 
  • R-Value Work: 0.213 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 122.100α = 90.00
b = 36.110β = 98.59
c = 56.420γ = 90.00
Software Package:
Software NamePurpose
X-PLORphasing
X-PLORmodel building
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 1995-03-17 
  • Released Date: 1995-12-07 
  • Deposition Author(s): Milburn, M.V.

Revision History 

  • Version 1.0: 1995-12-07
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance