3U2P

Crystal structure of N-terminal three extracellular domains of ErbB4/Her4


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.57 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.192 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

The ErbB4 extracellular region retains a tethered-like conformation in the absence of the tether.

Liu, P.Bouyain, S.Eigenbrot, C.Leahy, D.J.

(2012) Protein Sci. 21: 152-155

  • DOI: 10.1002/pro.753

  • PubMed Abstract: 
  • The epidermal growth factor receptor (EGFR) and its homologs ErbB3 and ErbB4 adopt a tethered conformation in the absence of ligand in which an extended hairpin loop from domain II contacts the juxtamembrane region of domain IV and tethers the domain ...

    The epidermal growth factor receptor (EGFR) and its homologs ErbB3 and ErbB4 adopt a tethered conformation in the absence of ligand in which an extended hairpin loop from domain II contacts the juxtamembrane region of domain IV and tethers the domain I/II pair to the domain III/IV pair. By burying the hairpin loop, which is required for formation of active receptor dimers, the tether contact was thought to prevent constitutive activation of EGFR and its homologs. Amino-acid substitutions at key sites within the tether contact region fail to result in constitutively active receptors however. We report here the 2.5 Å crystal structure of the N-terminal three extracellular domains of ErbB4, which bind ligand but lack domain IV and thus the tether contact. This ErbB4 fragment nonetheless adopts a domain arrangement very similar to the arrangement adopted in the presence of the tether suggesting that regions in addition to the tether contribute to maintaining this conformation and inactivity in the absence of the tether contact. We suggest that the tether conformation may have evolved to prevent crosstalk between different EGFR homologs and thus allow diversification of EGFR and its homologs.


    Organizational Affiliation

    Department of Biophysics and Biophysical Chemistry, Johns Hopkins University School of Medicine, 725 N. Wolfe St., Baltimore, MD 21205, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Receptor tyrosine-protein kinase erbB-4
A
497Homo sapiensMutation(s): 0 
Gene Names: ERBB4 (HER4)
EC: 2.7.10.1
Find proteins for Q15303 (Homo sapiens)
Go to Gene View: ERBB4
Go to UniProtKB:  Q15303
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download SDF File 
Download CCD File 
A
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.57 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.192 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 42.170α = 90.00
b = 85.560β = 90.00
c = 152.400γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
HKL-2000data collection
BUSTERrefinement
HKL-2000data reduction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-11-09
    Type: Initial release
  • Version 1.1: 2012-10-03
    Type: Database references