3V6B

VEGFR-2/VEGF-E complex structure


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.205 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.237 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Thermodynamic and structural description of allosterically regulated VEGFR-2 dimerization.

Brozzo, M.S.Bjelic, S.Kisko, K.Schleier, T.Leppanen, V.M.Alitalo, K.Winkler, F.K.Ballmer-Hofer, K.

(2012) Blood 119: 1781-1788

  • DOI: 10.1182/blood-2011-11-390922
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • VEGFs activate 3 receptor tyrosine kinases, VEGFR-1, VEGFR-2, and VEGFR-3, promoting angiogenic and lymphangiogenic signaling. The extracellular receptor domain (ECD) consists of 7 Ig-homology domains; domains 2 and 3 (D23) represent the ligand-bindi ...

    VEGFs activate 3 receptor tyrosine kinases, VEGFR-1, VEGFR-2, and VEGFR-3, promoting angiogenic and lymphangiogenic signaling. The extracellular receptor domain (ECD) consists of 7 Ig-homology domains; domains 2 and 3 (D23) represent the ligand-binding domain, whereas the function of D4-7 is unclear. Ligand binding promotes receptor dimerization and instigates transmembrane signaling and receptor kinase activation. In the present study, isothermal titration calorimetry showed that the Gibbs free energy of VEGF-A, VEGF-C, or VEGF-E binding to D23 or the full-length ECD of VEGFR-2 is dominated by favorable entropic contribution with enthalpic penalty. The free energy of VEGF binding to the ECD is 1.0-1.7 kcal/mol less favorable than for binding to D23. A model of the VEGF-E/VEGFR-2 ECD complex derived from small-angle scattering data provided evidence for homotypic interactions in D4-7. We also solved the crystal structures of complexes between VEGF-A or VEGF-E with D23, which revealed comparable binding surfaces and similar interactions between the ligands and the receptor, but showed variation in D23 twist angles. The energetically unfavorable homotypic interactions in D4-7 may be required for re-orientation of receptor monomers, and this mechanism might prevent ligand-independent activation of VEGFR-2 to evade the deleterious consequences for blood and lymph vessel homeostasis arising from inappropriate receptor activation.


    Organizational Affiliation

    Biomolecular Research, Molecular Cell Biology Paul Scherrer Institut, Villigen, Switzerland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
VEGF-E
A
137Orf virus (strain NZ2)Mutation(s): 0 
Find proteins for P52584 (Orf virus (strain NZ2))
Go to UniProtKB:  P52584
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Vascular endothelial growth factor receptor 2
R
424N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.205 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.237 
  • Space Group: P 65 2 2
Unit Cell:
Length (Å)Angle (°)
a = 79.879α = 90.00
b = 79.879β = 90.00
c = 340.044γ = 120.00
Software Package:
Software NamePurpose
RemDAqdata collection
PHASERphasing
XDSdata reduction
XSCALEdata scaling
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-01-18
    Type: Initial release
  • Version 1.1: 2012-03-07
    Type: Database references
  • Version 1.2: 2017-11-08
    Type: Refinement description