1N6U

NMR structure of the interferon-binding ectodomain of the human interferon receptor


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 35 
  • Conformers Submitted: 22 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The human type I interferon receptor. NMR structure reveals the molecular basis of ligand binding.

Chill, J.H.Quadt, S.R.Levy, R.Schreiber, G.Anglister, J.

(2003) Structure 11: 791-802

  • Primary Citation of Related Structures:  1N6V

  • PubMed Abstract: 
  • The potent antiviral and antiproliferative activities of human type I interferons (IFNs) are mediated by a single receptor comprising two subunits, IFNAR1 and IFNAR2. The structure of the IFNAR2 IFN binding ectodomain (IFNAR2-EC), the first helical c ...

    The potent antiviral and antiproliferative activities of human type I interferons (IFNs) are mediated by a single receptor comprising two subunits, IFNAR1 and IFNAR2. The structure of the IFNAR2 IFN binding ectodomain (IFNAR2-EC), the first helical cytokine receptor structure determined in solution, reveals the molecular basis for IFN binding. The atypical perpendicular orientation of its two fibronectin domains explains the lack of C domain involvement in ligand binding. A model of the IFNAR2-EC/IFNalpha2 complex based on double mutant cycle-derived constraints uncovers an extensive and predominantly aliphatic hydrophobic patch on the receptor that interacts with a matching hydrophobic surface of IFNalpha2. An adjacent motif of alternating charged side chains guides the two proteins into a tight complex. The binding interface may account for crossreactivity and ligand specificity of the receptor. This molecular description of IFN binding should be invaluable for study and design of IFN-based biomedical agents.


    Related Citations: 
    • The human interferon receptor: NMR-based modeling, mapping of the IFN-alpha2 binding site, and observed ligand-induced tightening
      Chill, J.H.,Nivasch, R.,Levy, R.,Albeck, S.,Schreiber, G.,Anglister, J.
      (2002) Biochemistry 41: 3575


    Organizational Affiliation

    Department of Structural Biology, Weizmann Institute of Science, Rehovot 76100, Israel.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Interferon-alpha/beta receptor beta chain
A
212Homo sapiensGene Names: IFNAR2 (IFNABR, IFNARB)
Find proteins for P48551 (Homo sapiens)
Go to Gene View: IFNAR2
Go to UniProtKB:  P48551
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 35 
  • Conformers Submitted: 22 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 1N6U Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-07-15
    Type: Initial release
  • Version 1.1: 2008-04-28
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance