2B5I

cytokine receptor complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.223 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of the quaternary complex of interleukin-2 with its alpha, beta, and gammac receptors.

Wang, X.Rickert, M.Garcia, K.C.

(2005) Science 310: 1159-1163

  • DOI: 10.1126/science.1117893

  • PubMed Abstract: 
  • Interleukin-2 (IL-2) is an immunoregulatory cytokine that acts through a quaternary receptor signaling complex containing alpha (IL-2Ralpha), beta (IL-2Rbeta), and common gamma chain (gc) receptors. In the structure of the quaternary ectodomain compl ...

    Interleukin-2 (IL-2) is an immunoregulatory cytokine that acts through a quaternary receptor signaling complex containing alpha (IL-2Ralpha), beta (IL-2Rbeta), and common gamma chain (gc) receptors. In the structure of the quaternary ectodomain complex as visualized at a resolution of 2.3 angstroms, the binding of IL-2Ralpha to IL-2 stabilizes a secondary binding site for presentation to IL-2Rbeta. gammac is then recruited to the composite surface formed by the IL-2/IL-2Rbeta complex. Consistent with its role as a shared receptor for IL-4, IL-7, IL-9, IL-15, and IL-21, gammac forms degenerate contacts with IL-2. The structure of gammac provides a rationale for loss-of-function mutations found in patients with X-linked severe combined immunodeficiency diseases (X-SCID). This complex structure provides a framework for other gammac-dependent cytokine-receptor interactions and for the engineering of improved IL-2 therapeutics.


    Organizational Affiliation

    Howard Hughes Medical Institute, Department of Microbiology and Immunology, Stanford University School of Medicine, 299 Campus Drive, Fairchild D319, Stanford, CA 94305, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Interleukin-2
A
133Homo sapiensMutation(s): 0 
Gene Names: IL2
Find proteins for P60568 (Homo sapiens)
Go to Gene View: IL2
Go to UniProtKB:  P60568
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Interleukin-2 receptor beta chain
B
214Homo sapiensMutation(s): 3 
Gene Names: IL2RB (IL15RB)
Find proteins for P14784 (Homo sapiens)
Go to Gene View: IL2RB
Go to UniProtKB:  P14784
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Cytokine receptor common gamma chain
C
199Homo sapiensMutation(s): 1 
Gene Names: IL2RG
Find proteins for P31785 (Homo sapiens)
Go to Gene View: IL2RG
Go to UniProtKB:  P31785
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Interleukin-2 receptor alpha chain
D
217Homo sapiensMutation(s): 1 
Gene Names: IL2RA
Find proteins for P01589 (Homo sapiens)
Go to Gene View: IL2RA
Go to UniProtKB:  P01589
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download SDF File 
Download CCD File 
B, C
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.223 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 113.913α = 90.00
b = 87.709β = 116.32
c = 130.177γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
CCP4data scaling
PHASERphasing
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-11-29
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Advisory, Version format compliance