3ETP

The crystal structure of the ligand-binding domain of the EphB2 receptor at 2.0 A resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.198 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of the ligand-binding domain of the EphB2 receptor at 2 A resolution.

Goldgur, Y.Paavilainen, S.Nikolov, D.Himanen, J.P.

(2009) Acta Crystallogr.,Sect.F 65: 71-74

  • DOI: 10.1107/S1744309108043078

  • PubMed Abstract: 
  • Eph tyrosine kinase receptors, the largest group of receptor tyrosine kinases, and their ephrin ligands are important mediators of cell-cell communication regulating cell attachment, shape and mobility. Recently, several Eph receptors and ephrins hav ...

    Eph tyrosine kinase receptors, the largest group of receptor tyrosine kinases, and their ephrin ligands are important mediators of cell-cell communication regulating cell attachment, shape and mobility. Recently, several Eph receptors and ephrins have also been found to play important roles in the progression of cancer. Structural and biophysical studies have established detailed information on the binding and recognition of Eph receptors and ephrins. The initial high-affinity binding of Eph receptors to ephrin occurs through the penetration of an extended G-H loop of the ligand into a hydrophobic channel on the surface of the receptor. Consequently, the G-H loop-binding channel of Eph receptors is the main target in the search for Eph antagonists that could be used in the development of anticancer drugs and several peptides have been shown to specifically bind Eph receptors and compete with the cognate ephrin ligands. However, the molecular details of the conformational changes upon Eph/ephrin binding have remained speculative, since two of the loops were unstructured in the original model of the free EphB2 structure and their conformational changes upon ligand binding could consequently not be analyzed in detail. In this study, the X-ray structure of unbound EphB2 is reported at a considerably higher 2 A resolution, the conformational changes that the important receptor loops undergo upon ligand binding are described and the consequences that these findings have for the development of Eph antagonists are discussed.


    Organizational Affiliation

    Structural Biology Program, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York 10065, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ephrin type-B receptor 2
A
187Mus musculusMutation(s): 0 
Gene Names: Ephb2 (Epth3, Nuk, Sek3)
EC: 2.7.10.1
Find proteins for P54763 (Mus musculus)
Go to UniProtKB:  P54763
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.198 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 54.028α = 90.00
b = 54.028β = 90.00
c = 157.412γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
HKL-2000data scaling
REFMACrefinement
HKL-2000data reduction
HKL-2000data collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-10-21
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2018-01-24
    Type: Structure summary