1IHK

CRYSTAL STRUCTURE OF FIBROBLAST GROWTH FACTOR 9 (FGF9)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.203 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Crystal structure of fibroblast growth factor 9 reveals regions implicated in dimerization and autoinhibition.

Plotnikov, A.N.Eliseenkova, A.V.Ibrahimi, O.A.Shriver, Z.Sasisekharan, R.Lemmon, M.A.Mohammadi, M.

(2001) J Biol Chem 276: 4322-4329

  • DOI: https://doi.org/10.1074/jbc.M006502200
  • Primary Citation of Related Structures:  
    1IHK

  • PubMed Abstract: 

    Fibroblast growth factors (FGFs) constitute a large family of heparin-binding growth factors with diverse biological activities. FGF9 was originally described as glia-activating factor and is expressed in the nervous system as a potent mitogen for glia cells. Unlike most FGFs, FGF9 forms dimers in solution with a K(d) of 680 nm. To elucidate the molecular mechanism of FGF9 dimerization, the crystal structure of FGF9 was determined at 2.2 A resolution. FGF9 adopts a beta-trefoil fold similar to other FGFs. However, unlike other FGFs, the N- and C-terminal regions outside the beta-trefoil core in FGF9 are ordered and involved in the formation of a 2-fold crystallographic dimer. A significant surface area (>2000 A(2)) is buried in the dimer interface that occludes a major receptor binding site of FGF9. Thus, we propose an autoinhibitory mechanism for FGF9 that is dependent on sequences outside of the beta-trefoil core. Moreover, a model is presented providing a molecular basis for the preferential affinity of FGF9 toward FGFR3.


  • Organizational Affiliation

    Department of Pharmacology, New York University School of Medicine, New York, New York 10016, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
GLIA-ACTIVATING FACTOR174Homo sapiensMutation(s): 0 
Gene Names: FGF9
UniProt & NIH Common Fund Data Resources
Find proteins for P31371 (Homo sapiens)
Explore P31371 
Go to UniProtKB:  P31371
PHAROS:  P31371
GTEx:  ENSG00000102678 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP31371
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.203 
  • Space Group: I 41 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 87.823α = 90
b = 87.823β = 90
c = 115.636γ = 90
Software Package:
Software NamePurpose
AMoREphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2001-05-02
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2024-02-07
    Changes: Data collection, Database references, Derived calculations