2B5I

cytokine receptor complex

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.225 

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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
  • Primary Citation of Related Structures:  
    2B5I

  • 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 complex as visualized at a resolution of 2 ...

    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
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Interleukin-2A133Homo sapiensMutation(s): 0 
Gene Names: IL2
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PHAROS:  P60568
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UniProt GroupP60568
Protein Feature View
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Interleukin-2 receptor beta chainB214Homo sapiensMutation(s): 3 
Gene Names: IL2RB, IL15RB
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Find proteins for P14784 (Homo sapiens)
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PHAROS:  P14784
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UniProt GroupP14784
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Cytokine receptor common gamma chainC199Homo sapiensMutation(s): 1 
Gene Names: IL2RG
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Find proteins for P31785 (Homo sapiens)
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PHAROS:  P31785
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UniProt GroupP31785
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Interleukin-2 receptor alpha chainD217Homo sapiensMutation(s): 1 
Gene Names: IL2RA
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Find proteins for P01589 (Homo sapiens)
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PHAROS:  P01589
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Oligosaccharides

Help

Entity ID: 5
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseE, F 2N-Glycosylation Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG
Download Ideal Coordinates CCD File 
G [auth C],
H [auth C]		2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.225 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 113.913α = 90
b = 87.709β = 116.32
c = 130.177γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
CCP4data scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-11-29
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary
  • Version 2.1: 2021-10-20
    Changes: Database references, Structure summary