2AXM

HEPARIN-LINKED BIOLOGICALLY-ACTIVE DIMER OF FIBROBLAST GROWTH FACTOR


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.307 
  • R-Value Work: 0.218 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of a heparin-linked biologically active dimer of fibroblast growth factor.

DiGabriele, A.D.Lax, I.Chen, D.I.Svahn, C.M.Jaye, M.Schlessinger, J.Hendrickson, W.A.

(1998) Nature 393: 812-817

  • DOI: 10.1038/31741
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The fibroblast growth factors (FGFs) form a large family of structurally related, multifunctional proteins that regulate various biological responses. They mediate cellular functions by binding to transmembrane FGF receptors, which are protein tyrosi ...

    The fibroblast growth factors (FGFs) form a large family of structurally related, multifunctional proteins that regulate various biological responses. They mediate cellular functions by binding to transmembrane FGF receptors, which are protein tyrosine kinases. FGF receptors are activated by oligomerization, and both this activation and FGF-stimulated biological responses require heparin-like molecules as well as FGF. Heparins are linear anionic polysaccharide chains; they are typically heterogeneously sulphated on alternating L-iduronic and D-glucosamino sugars, and are nearly ubiquitous in animal tissues as heparan sulphate proteoglycans on cell surfaces and in the extracellular matrix. Although several crystal structures have been described for FGF molecules in complexes with heparin-like sugars, the nature of a biologically active complex has been unknown until now. Here we describe the X-ray crystal structure, at 2.9 A resolution, of a biologically active dimer of human acidic FGF in a complex with a fully sulphated, homogeneous heparin decassacharide. The dimerization of heparin-linked acidic FGF observed here is an elegant mechanism for the modulation of signalling through combinatorial homodimerization and heterodimerization of the 12 known members of the FGF family.


    Related Citations: 
    • Heparin Structure and Interactions with Basic Fibroblast Growth Factor
      Faham, S.,Hileman, R.E.,Fromm, J.R.,Linhardt, R.J.,Rees, D.C.
      (1996) Science 271: 1116
    • Structural Studies of the Binding of the Anti-Ulcer Drug Sucrose Octasulfate to Acidic Fibroblast Growth Factor
      Zhu, X.,Hsu, B.T.,Rees, D.C.
      (1993) Structure 1: 27
    • X-ray crystal structure of human acidic fibroblast growth factor.
      Blaber, M.,DiSalvo, J.,Thomas, K.A.
      (1996) Biochemistry 35: 2086


    Organizational Affiliation

    Department of Biochemistry and Molecular Biophysics, Columbia University, New York, New York 10032, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ACIDIC FIBROBLAST GROWTH FACTOR
A, B
135Homo sapiensMutation(s): 0 
Gene Names: FGF1 (FGFA)
Find proteins for P05230 (Homo sapiens)
Go to Gene View: FGF1
Go to UniProtKB:  P05230
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SGN
Query on SGN

Download SDF File 
Download CCD File 
B
N,O6-DISULFO-GLUCOSAMINE
C6 H13 N O11 S2
DQTRACMFIGDHSN-UKFBFLRUSA-N
 Ligand Interaction
IDS
Query on IDS

Download SDF File 
Download CCD File 
B
2-O-sulfo-alpha-L-idopyranuronic acid
O2-SULFO-GLUCURONIC ACID
C6 H10 O10 S
COJBCAMFZDFGFK-VCSGLWQLSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.307 
  • R-Value Work: 0.218 
  • Space Group: P 61 2 2
Unit Cell:
Length (Å)Angle (°)
a = 91.100α = 90.00
b = 91.100β = 90.00
c = 193.900γ = 120.00
Software Package:
Software NamePurpose
ROTAVATA)data scaling
X-PLORrefinement
X-PLORphasing
X-PLORmodel building
DENZOdata reduction
CCP4data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-04-22
    Type: Initial release
  • Version 1.1: 2008-03-10
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance