1QSV

THE VEGF-BINDING DOMAIN OF FLT-1, 20 NMR STRUCTURES


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 20 
  • Selection Criteria: STRUCTURES WITH ACCEPTABLE COVALENT GEOMETRY,STRUCTURES WITH THE LEAST RESTRAINT VIOLATIONS 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Solution structure of the VEGF-binding domain of Flt-1: comparison of its free and bound states.

Starovasnik, M.A.Christinger, H.W.Wiesmann, C.Champe, M.A.de Vos, A.M.Skelton, N.J.

(1999) J.Mol.Biol. 293: 531-544

  • DOI: 10.1006/jmbi.1999.3134
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The extracellular portion of the VEGF and PlGF receptor, Flt-1 (or VEGFR-1), consists of seven immunoglobulin-like domains. The second domain from the N terminus (Flt-1D2) is necessary and sufficient for high affinity VEGF binding. The 1.7 A resoluti ...

    The extracellular portion of the VEGF and PlGF receptor, Flt-1 (or VEGFR-1), consists of seven immunoglobulin-like domains. The second domain from the N terminus (Flt-1D2) is necessary and sufficient for high affinity VEGF binding. The 1.7 A resolution crystal structure of Flt-1D2 bound to VEGF revealed that this domain is a member of the I-set of the immunoglobulin superfamily, but has several unusual features including a region near the N terminus that bulges away from the domain rather than pairing with the neighboring beta-strand. Some of the residues in this region make contact with VEGF, raising the possibility that this bulge could be a consequence of VEGF binding and might not be present in the absence of ligand. Here we report the three-dimensional structure of Flt-1D2 in its uncomplexed form determined by NMR spectroscopy. A semi-automated method for NOE assignment that takes advantage of the previously solved crystal structure was used to facilitate rapid analysis of the 3D NOESY spectra. The solution structure is very similar to the previously reported VEGF-bound crystal structure; the N-terminal bulge is present, albeit in a different conformation. We also report the 2.7 A crystal structure of Flt-1D2 in complex with VEGF solved in a different crystal form that reveals yet another conformation for the N-terminal bulge region. (1)H-(15)N heteronuclear NOEs indicate this region is flexible in solution; the crystal structures show that this region is able to adopt more than one conformation even when bound to VEGF. Thus, VEGF-binding is not accompanied by significant structural change in Flt-1D2, and the unusual structural features of Flt-1D2 are an intrinsic property of this domain.


    Organizational Affiliation

    Department of Protein Engineering, Genentech, Inc., One DNA Way, South San Francisco, CA, 94080, USA. star@gene.com




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
VASCULAR ENDOTHELIAL GROWTH FACTOR RECEPTOR 1
A
101Homo sapiensMutation(s): 0 
Gene Names: FLT1 (FLT, FRT, VEGFR1)
EC: 2.7.10.1
Find proteins for P17948 (Homo sapiens)
Go to Gene View: FLT1
Go to UniProtKB:  P17948
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 20 
  • Selection Criteria: STRUCTURES WITH ACCEPTABLE COVALENT GEOMETRY,STRUCTURES WITH THE LEAST RESTRAINT VIOLATIONS 
  • Olderado: 1QSV Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-11-10
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance