3SE3

human IFNa2-IFNAR ternary complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.00 Å
  • R-Value Free: 0.311 
  • R-Value Work: 0.251 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structural linkage between ligand discrimination and receptor activation by type I interferons.

Thomas, C.Moraga, I.Levin, D.Krutzik, P.O.Podoplelova, Y.Trejo, A.Lee, C.Yarden, G.Vleck, S.E.Glenn, J.S.Nolan, G.P.Piehler, J.Schreiber, G.Garcia, K.C.

(2011) Cell 146: 621-632

  • DOI: 10.1016/j.cell.2011.06.048
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Type I Interferons (IFNs) are important cytokines for innate immunity against viruses and cancer. Sixteen human type I IFN variants signal through the same cell-surface receptors, IFNAR1 and IFNAR2, yet they can evoke markedly different physiological ...

    Type I Interferons (IFNs) are important cytokines for innate immunity against viruses and cancer. Sixteen human type I IFN variants signal through the same cell-surface receptors, IFNAR1 and IFNAR2, yet they can evoke markedly different physiological effects. The crystal structures of two human type I IFN ternary signaling complexes containing IFNα2 and IFNω reveal recognition modes and heterotrimeric architectures that are unique among the cytokine receptor superfamily but conserved between different type I IFNs. Receptor-ligand cross-reactivity is enabled by conserved receptor-ligand "anchor points" interspersed among ligand-specific interactions that "tune" the relative IFN-binding affinities, in an apparent extracellular "ligand proofreading" mechanism that modulates biological activity. Functional differences between IFNs are linked to their respective receptor recognition chemistries, in concert with a ligand-induced conformational change in IFNAR1, that collectively control signal initiation and complex stability, ultimately regulating differential STAT phosphorylation profiles, receptor internalization rates, and downstream gene expression patterns.


    Organizational Affiliation

    Howard Hughes Medical Institute, Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA 94305, USA.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Interferon alpha/beta receptor 1A414Homo sapiensMutation(s): 0 
Gene Names: IFNAR1IFNAR
Find proteins for P17181 (Homo sapiens)
Explore P17181 
Go to UniProtKB:  P17181
NIH Common Fund Data Resources
PHAROS  P17181
Protein Feature View
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  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Interferon alpha 2bB166Homo sapiensMutation(s): 3 
Gene Names: IFNA2IFNA2AIFNA2BIFNA2C
Find proteins for P01563 (Homo sapiens)
Explore P01563 
Go to UniProtKB:  P01563
NIH Common Fund Data Resources
PHAROS  P01563
Protein Feature View
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  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Interferon alpha/beta receptor 2C199Homo sapiensMutation(s): 0 
Gene Names: IFNAR2IFNABRIFNARB
Find proteins for P48551 (Homo sapiens)
Explore P48551 
Go to UniProtKB:  P48551
NIH Common Fund Data Resources
PHAROS  P48551
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download CCD File 
A
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: 4.00 Å
  • R-Value Free: 0.311 
  • R-Value Work: 0.251 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 93.37α = 90
b = 93.37β = 90
c = 401.5γ = 120
Software Package:
Software NamePurpose
Blu-Icedata collection
PHASERphasing
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-08-31
    Type: Initial release
  • Version 1.1: 2012-03-21
    Changes: Database references
  • Version 1.2: 2013-08-21
    Changes: Structure summary
  • Version 1.3: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Database references, Derived calculations, Structure summary