2X11

Crystal structure of the complete EphA2 ectodomain in complex with ephrin A5 receptor binding domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.83 Å
  • R-Value Free: 0.314 
  • R-Value Work: 0.312 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

An Extracellular Steric Seeding Mechanism for Eph-Ephrin Signalling Platform Assembly

Seiradake, E.Harlos, K.Sutton, G.Aricescu, A.R.Jones, E.Y.

(2010) Nat.Struct.Mol.Biol. 17: 398

  • DOI: 10.1038/nsmb.1782
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Erythropoetin-producing hepatoma (Eph) receptors are cell-surface protein tyrosine kinases mediating cell-cell communication. Upon activation, they form signaling clusters. We report crystal structures of the full ectodomain of human EphA2 (eEphA2) b ...

    Erythropoetin-producing hepatoma (Eph) receptors are cell-surface protein tyrosine kinases mediating cell-cell communication. Upon activation, they form signaling clusters. We report crystal structures of the full ectodomain of human EphA2 (eEphA2) both alone and in complex with the receptor-binding domain of the ligand ephrinA5 (ephrinA5 RBD). Unliganded eEphA2 forms linear arrays of staggered parallel receptors involving two patches of residues conserved across A-class Ephs. eEphA2-ephrinA5 RBD forms a more elaborate assembly, whose interfaces include the same conserved regions on eEphA2, but rearranged to accommodate ephrinA5 RBD. Cell-surface expression of mutant EphA2s showed that these interfaces are critical for localization at cell-cell contacts and activation-dependent degradation. Our results suggest a 'nucleation' mechanism whereby a limited number of ligand-receptor interactions 'seed' an arrangement of receptors which can propagate into extended signaling arrays.


    Organizational Affiliation

    Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
EPHRIN TYPE-A RECEPTOR 2
A
545Homo sapiensMutation(s): 0 
Gene Names: EPHA2 (ECK)
EC: 2.7.10.1
Find proteins for P29317 (Homo sapiens)
Go to Gene View: EPHA2
Go to UniProtKB:  P29317
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
EPHRIN-A5
B
177Homo sapiensMutation(s): 0 
Gene Names: EFNA5 (EPLG7, LERK7)
Find proteins for P52803 (Homo sapiens)
Go to Gene View: EFNA5
Go to UniProtKB:  P52803
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.83 Å
  • R-Value Free: 0.314 
  • R-Value Work: 0.312 
  • Space Group: P 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 173.630α = 90.00
b = 59.630β = 90.00
c = 112.160γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
XSCALEdata scaling
XDSdata reduction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-03-16
    Type: Initial release
  • Version 1.1: 2011-08-31
    Type: Database references, Derived calculations, Refinement description, Version format compliance
  • Version 1.2: 2018-02-28
    Type: Source and taxonomy