1G0Y

IL-1 RECEPTOR TYPE 1 COMPLEXED WITH ANTAGONIST PEPTIDE AF10847


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.332 
  • R-Value Work: 0.223 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

X-ray crystal structure of a small antagonist peptide bound to interleukin-1 receptor type 1.

Vigers, G.P.Dripps, D.J.Edwards III, C.K.Brandhuber, B.J.

(2000) J.Biol.Chem. 275: 36927-36933

  • DOI: 10.1074/jbc.M006071200

  • PubMed Abstract: 
  • Interleukin (IL-1)alpha and IL-1beta are important mediators of inflammation. The binding of IL-1 to interleukin-1 receptor (IL-1R) type 1 is the initial step in IL-1 signal transduction and therefore is a tempting target for anti-inflammatory therap ...

    Interleukin (IL-1)alpha and IL-1beta are important mediators of inflammation. The binding of IL-1 to interleukin-1 receptor (IL-1R) type 1 is the initial step in IL-1 signal transduction and therefore is a tempting target for anti-inflammatory therapeutics. To advance our understanding of IL-1R1 binding interactions, we have determined the structure of the extracellular domains of IL-1R1 bound to a 21-amino acid IL-1 antagonist peptide at 3.0-A resolution. The antagonist peptide binds to the domain 1/2 junction of the receptor, which is a conserved binding site for IL-1beta and IL-1 receptor antagonist (IL-1ra). This co-crystal structure also reveals that considerable flexibility is present in IL-1R1 because the carboxyl-terminal domain of the receptor is rotated almost 170 degrees relative to the first two domains of the receptor compared with the previously solved IL-1R1.ligand structures. The structure shows an unexpected binding mode for the peptide and may contribute to the design of smaller IL-1R antagonists.


    Organizational Affiliation

    Department of Inflammation Research, Amgen, Incorporated, Boulder, Colorado 80301, USA. gvigers@arraybiopharma.com




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
INTERLEUKIN-1 RECEPTOR, TYPE I
R
312Homo sapiensMutation(s): 0 
Gene Names: IL1R1 (IL1R, IL1RA, IL1RT1)
Find proteins for P14778 (Homo sapiens)
Go to Gene View: IL1R1
Go to UniProtKB:  P14778
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
ANTAGONIST PEPTIDE AF10847
I
21N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.332 
  • R-Value Work: 0.223 
  • Space Group: P 65 2 2
Unit Cell:
Length (Å)Angle (°)
a = 95.898α = 90.00
b = 95.898β = 90.00
c = 208.017γ = 120.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
DENZOdata reduction
X-PLORrefinement
MLPHAREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-10-25
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-01-24
    Type: Database references
  • Version 1.4: 2018-01-31
    Type: Database references, Experimental preparation