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CRYSTAL STRUCTURE OF A TERNARY FGF1-FGFR2-HEPARIN COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.274 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal Structure of Fibroblast Growth Factor Receptor Ectodomain Bound to Ligand and Heparin

Pellegrini, L.Burke, D.F.von Delft, F.Mulloy, B.Blundell, T.L.

(2000) Nature 407: 1029

  • DOI: 10.1038/35039551

  • PubMed Abstract: 
  • Fibroblast growth factors (FGFs) are a large family of structurally related proteins with a wide range of physiological and pathological activities. Signal transduction requires association of FGF with its receptor tyrosine kinase (FGFR) and heparan ...

    Fibroblast growth factors (FGFs) are a large family of structurally related proteins with a wide range of physiological and pathological activities. Signal transduction requires association of FGF with its receptor tyrosine kinase (FGFR) and heparan sulphate proteoglycan in a specific complex on the cell surface. Direct involvement of the heparan sulphate glycosaminoglycan polysaccharide in the molecular association between FGF and its receptor is essential for biological activity. Although crystal structures of binary complexes of FGF-heparin and FGF-FGFR have been described, the molecular architecture of the FGF signalling complex has not been elucidated. Here we report the crystal structure of the FGFR2 ectodomain in a dimeric form that is induced by simultaneous binding to FGF1 and a heparin decasaccharide. The complex is assembled around a central heparin molecule linking two FGF1 ligands into a dimer that bridges between two receptor chains. The asymmetric heparin binding involves contacts with both FGF1 molecules but only one receptor chain. The structure of the FGF1-FGFR2-heparin ternary complex provides a structural basis for the essential role of heparan sulphate in FGF signalling.


    Organizational Affiliation

    Department of Biochemistry, University of Cambridge, UK. luca@cryst.bioc.cam.ac.uk




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FIBROBLAST GROWTH FACTOR 1
A, C
140Homo sapiensMutation(s): 0 
Gene Names: FGF1 (FGFA)
Find proteins for P05230 (Homo sapiens)
Go to Gene View: FGF1
Go to UniProtKB:  P05230
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
FIBROBLAST GROWTH FACTOR RECEPTOR 2
B, D
219Homo sapiensMutation(s): 0 
Gene Names: FGFR2 (BEK, KGFR, KSAM)
EC: 2.7.10.1
Find proteins for P21802 (Homo sapiens)
Go to Gene View: FGFR2
Go to UniProtKB:  P21802
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
C, D
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
SGN
Query on SGN

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

Download SDF File 
Download CCD File 
A
2-O-sulfo-alpha-L-idopyranuronic acid
O2-SULFO-GLUCURONIC ACID
C6 H10 O10 S
COJBCAMFZDFGFK-VCSGLWQLSA-N
 Ligand Interaction
NI
Query on NI

Download SDF File 
Download CCD File 
A, B, C, D
NICKEL (II) ION
Ni
VEQPNABPJHWNSG-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.274 
  • Space Group: P 62
Unit Cell:
Length (Å)Angle (°)
a = 195.900α = 90.00
b = 195.900β = 90.00
c = 68.860γ = 120.00
Software Package:
Software NamePurpose
SHARPphasing
MOSFLMdata reduction
CNSrefinement
SHELXphasing
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-10-23
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-12-13
    Type: Database references, Source and taxonomy, Structure summary