4HR9

Human interleukin 17A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.48 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.210 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structures of interleukin 17A and its complex with IL-17 receptor A.

Liu, S.Song, X.Chrunyk, B.A.Shanker, S.Hoth, L.R.Marr, E.S.Griffor, M.C.

(2013) Nat Commun 4: 1888-1888

  • DOI: 10.1038/ncomms2880
  • Primary Citation of Related Structures:  4HSA

  • PubMed Abstract: 
  • The constituent polypeptides of the interleukin-17 family form six different homodimeric cytokines (IL-17A-F) and the heterodimeric IL-17A/F. Their interactions with IL-17 receptors A-E (IL-17RA-E) mediate host defenses while also contributing to inf ...

    The constituent polypeptides of the interleukin-17 family form six different homodimeric cytokines (IL-17A-F) and the heterodimeric IL-17A/F. Their interactions with IL-17 receptors A-E (IL-17RA-E) mediate host defenses while also contributing to inflammatory and autoimmune responses. IL-17A and IL-17F both preferentially engage a receptor complex containing one molecule of IL-17RA and one molecule of IL-17RC. More generally, IL-17RA appears to be a shared receptor that pairs with other members of its family to allow signaling of different IL-17 cytokines. Here we report crystal structures of homodimeric IL-17A and its complex with IL-17RA. Binding to IL-17RA at one side of the IL-17A molecule induces a conformational change in the second, symmetry-related receptor site of IL-17A. This change favors, and is sufficient to account for, the selection of a different receptor polypeptide to complete the cytokine-receptor complex. The structural results are supported by biophysical studies with IL-17A variants produced by site-directed mutagenesis.


    Organizational Affiliation

    Structural Biology and Biophysics Group, Pfizer Groton Laboratories, Eastern Point Road, Groton, Connecticut 06340, USA. shenping.liu@pfizer.com




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Interleukin-17A
A, B
122Homo sapiensGene Names: IL17A (CTLA8, IL17)
Find proteins for Q16552 (Homo sapiens)
Go to Gene View: IL17A
Go to UniProtKB:  Q16552
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.48 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.210 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 64.350α = 90.00
b = 85.250β = 90.00
c = 119.860γ = 90.00
Software Package:
Software NamePurpose
BUSTERrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2012-10-26 
  • Released Date: 2013-05-22 
  • Deposition Author(s): Liu, S.

Revision History 

  • Version 1.0: 2013-05-22
    Type: Initial release
  • Version 1.1: 2013-06-05
    Type: Database references
  • Version 1.2: 2013-06-19
    Type: Database references