1FF5

STRUCTURE OF E-CADHERIN DOUBLE DOMAIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.93 Å

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

A new crystal structure, Ca2+ dependence and mutational analysis reveal molecular details of E-cadherin homoassociation.

Pertz, O.Bozic, D.Koch, A.W.Fauser, C.Brancaccio, A.Engel, J.

(1999) EMBO J. 18: 1738-1747

  • DOI: 10.1093/emboj/18.7.1738

  • PubMed Abstract: 
  • Electron microscopy of ECADCOMP, a recombinant E-cadherin ectodomain pentamerized by the assembly domain of cartilage oligomeric matrix protein, has been used to analyze the role of cis-dimerization and trans-interaction in the homophilic association ...

    Electron microscopy of ECADCOMP, a recombinant E-cadherin ectodomain pentamerized by the assembly domain of cartilage oligomeric matrix protein, has been used to analyze the role of cis-dimerization and trans-interaction in the homophilic association of this cell adhesion molecule. The Ca2+ dependency of both interactions was investigated. Low Ca2+ concentrations (50 microM) stabilized the rod-like structure of E-cadherin. At medium Ca2+ concentration (500 microM), two adjacent ectodomains in a pentamer formed cis-dimers. At high Ca2+ concentration (>1 mM), two cis-dimers from different pentamers formed a trans-interaction. The X-ray structure of an N-terminal domain pair of E-cadherin revealed two molecules per asymmetric unit in an intertwisted X-shaped arrangement with closest contacts in the Ca2+-binding region between domains 1 and 2. Contrary to previous data, Trp2 was docked in the hydrophobic cavity of its own molecule, and was therefore not involved in cis-dimerization of two molecules. This was supported further by W2A and A80I (a residue involved in the hydrophobic cavity surrounding Trp2) mutations in ECADCOMP which both led to abrogation of the trans- but not the cis-interaction. Structural and biochemical data suggest a link between Ca2+ binding in the millimolar range and Trp2 docking, both events being essential for the trans-association.


    Organizational Affiliation

    Department of Biophysical Chemistry, Biozentrum, University of Basel, Klingelbergstrasse 70, 4056 Basel, Switzerland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
EPITHELIAL CADHERIN
A, B
219Mus musculusMutation(s): 0 
Gene Names: Cdh1
Find proteins for P09803 (Mus musculus)
Go to UniProtKB:  P09803
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
A, B
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.93 Å
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 122.500α = 90.00
b = 80.560β = 113.98
c = 73.440γ = 90.00
Software Package:
Software NamePurpose
ROTAVATAdata scaling
AMoREphasing
CCP4data scaling
X-PLORrefinement
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-08-23
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-04
    Type: Refinement description