1IAR

INTERLEUKIN-4 / RECEPTOR ALPHA CHAIN COMPLEX

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.218 

wwPDB Validation   3D Report Full Report


This is version 1.5 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

  • DOI: 10.1016/s0092-8674(00)80736-9
  • Primary Citation of Related Structures:  
    1IAR

  • 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). Subsequently, this intermediate complex recruits the common gamma chain (gamma c), thereby initiating transmembrane signaling ...

    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: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (INTERLEUKIN-4) A129Homo sapiensMutation(s): 0 
Gene Names: IL4
Find proteins for P05112 (Homo sapiens)
Explore P05112 
Go to UniProtKB:  P05112
NIH Common Fund Data Resources
PHAROS:  P05112
GTEx:  ENSG00000113520
Protein Feature View
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  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (INTERLEUKIN-4 RECEPTOR ALPHA CHAIN) B207Homo sapiensMutation(s): 2 
Gene Names: IL4R, IL4RA, 582J2.1
Find proteins for P24394 (Homo sapiens)
Explore P24394 
Go to UniProtKB:  P24394
NIH Common Fund Data Resources
PHAROS:  P24394
GTEx:  ENSG00000077238
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.218 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 49.72α = 90
b = 67.98β = 90
c = 108.46γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
ROTAVATA/AGROVATAdata reduction
MLPHAREphasing
X-PLORrefinement
CCP4data scaling
ROTAVATAdata scaling

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-03-03
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-04
    Changes: Refinement description
  • Version 1.4: 2018-03-14
    Changes: Database references
  • Version 1.5: 2019-11-06
    Changes: Data collection, Database references