1IAR

INTERLEUKIN-4 / RECEPTOR ALPHA CHAIN COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.218 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal structure of the interleukin-4/receptor alpha chain complex reveals a mosaic binding interface.

Hage, T.Sebald, W.Reinemer, P.

(1999) Cell 97: 271-281


  • PubMed Abstract: 
  • Interleukin-4 (IL-4) is a principal regulatory cytokine during an immune response and a crucial determinant for allergy and asthma. IL-4 binds with high affinity and specificity to the ectodomain of the IL-4 receptor alpha chain (IL4-BP). Subsequentl ...

    Interleukin-4 (IL-4) is a principal regulatory cytokine during an immune response and a crucial determinant for allergy and asthma. IL-4 binds with high affinity and specificity to the ectodomain of the IL-4 receptor alpha chain (IL4-BP). Subsequently, this intermediate complex recruits the common gamma chain (gamma c), thereby initiating transmembrane signaling. The crystal structure of the intermediate complex between human IL-4 and IL4-BP was determined at 2.3 A resolution. It reveals a novel spatial orientation of the two proteins, a small but unexpected conformational change in the receptor-bound IL-4, and an interface with three separate clusters of trans-interacting residues. Novel insights on ligand binding in the cytokine receptor family and a paradigm for receptors of IL-2, IL-7, IL-9, and IL-15, which all utilize gamma c, are provided.


    Related Citations: 
    • Crystals of a 1:1 Complex between Human Interleukin-4 and the Extracellular Domain of its Receptor Alpha Chain
      Hage, T.,Reinemer, P.,Sebald, W.
      (1998) Eur.J.Biochem. 258: 831


    Organizational Affiliation

    Institut für Physiologische Chemie II, Theodor-Boveri-Institut für Biowissen Schaften (Biozentrum), Universität Würzburg, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (INTERLEUKIN-4)
A
129Homo sapiensGene Names: IL4
Find proteins for P05112 (Homo sapiens)
Go to Gene View: IL4
Go to UniProtKB:  P05112
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (INTERLEUKIN-4 RECEPTOR ALPHA CHAIN)
B
207Homo sapiensGene Names: IL4R (IL4RA)
Find proteins for P24394 (Homo sapiens)
Go to Gene View: IL4R
Go to UniProtKB:  P24394
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.218 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 49.720α = 90.00
b = 67.980β = 90.00
c = 108.460γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
X-PLORrefinement
MLPHAREphasing
CCP4data scaling
ROTAVATA/AGROVATAdata reduction
ROTAVATAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-03-03
    Type: Initial release
  • Version 1.1: 2008-04-26
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-04
    Type: Refinement description