2ASK

Structure of human Artemin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.231 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Artemin crystal structure reveals insights into heparan sulfate binding.

Silvian, L.Jin, P.Carmillo, P.Boriack-Sjodin, P.A.Pelletier, C.Rushe, M.Gong, B.J.Sah, D.Pepinsky, B.Rossomando, A.

(2006) Biochemistry 45: 6801-6812

  • DOI: https://doi.org/10.1021/bi060035x
  • Primary Citation of Related Structures:  
    2ASK

  • PubMed Abstract: 

    Artemin (ART) promotes the growth of developing peripheral neurons by signaling through a multicomponent receptor complex comprised of a transmembrane tyrosine kinase receptor (cRET) and a specific glycosylphosphatidylinositol-linked co-receptor (GFRalpha3). Glial cell line-derived neurotrophic factor (GDNF) signals through a similar ternary complex but requires heparan sulfate proteoglycans (HSPGs) for full activity. HSPG has not been demonstrated as a requirement for ART signaling. We crystallized ART in the presence of sulfate and solved its structure by isomorphous replacement. The structure reveals ordered sulfate anions bound to arginine residues in the pre-helix and amino-terminal regions that were organized in a triad arrangement characteristic of heparan sulfate. Three residues in the pre-helix were singly or triply substituted with glutamic acid, and the resulting proteins were shown to have reduced heparin-binding affinity that is partly reflected in their ability to activate cRET. This study suggests that ART binds HSPGs and identifies residues that may be involved in HSPG binding.


  • Organizational Affiliation

    Department of Drug Discovery, Biogen Idec, Inc., 12 Cambridge Center, Cambridge, Massachusetts 02142, USA. laura.silvian@biogenidec.com


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
artemin
A, B
113Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q5T4W7 (Homo sapiens)
Explore Q5T4W7 
Go to UniProtKB:  Q5T4W7
PHAROS:  Q5T4W7
GTEx:  ENSG00000117407 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5T4W7
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.231 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 114.631α = 90
b = 33.674β = 98.95
c = 55.58γ = 90
Software Package:
Software NamePurpose
CNXrefinement
DENZOdata reduction
SCALEPACKdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-06-13
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance