2AHX

Crystal structure of ErbB4/HER4 extracellular domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.396 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.235 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

The extracellular region of ErbB4 adopts a tethered conformation in the absence of ligand

Bouyain, S.Longo, P.A.Li, S.Ferguson, K.M.Leahy, D.J.

(2005) Proc.Natl.Acad.Sci.USA 102: 15024-15029

  • DOI: 10.1073/pnas.0507591102

  • PubMed Abstract: 
  • The human ErbB family of receptor tyrosine kinases comprises the epidermal growth factor receptor (EGFR/ErbB1/HER1), ErbB2 (HER2/Neu), ErbB3 (HER3), and ErbB4 (HER4). ErbBs play fundamental roles in cell growth and differentiation events in embryonic ...

    The human ErbB family of receptor tyrosine kinases comprises the epidermal growth factor receptor (EGFR/ErbB1/HER1), ErbB2 (HER2/Neu), ErbB3 (HER3), and ErbB4 (HER4). ErbBs play fundamental roles in cell growth and differentiation events in embryonic and adult tissues, and inappropriate ErbB activity has been implicated in several human cancers. We report here the 2.4 A crystal structure of the extracellular region of human ErbB4 in the absence of ligand and show that it adopts a tethered conformation similar to inactive forms of ErbB1 and ErbB3. This structure completes the gallery of unliganded ErbB receptors and demonstrates that all human ligand-binding ErbBs adopt the autoinhibited conformation. We also show that the binding of neuregulin-1beta to ErbB4 and ErbB3 and the binding of betacellulin to both ErbB4 and ErbB1 does not decrease at low pH, unlike the binding of epidermal growth factor and transforming growth factor-alpha to ErbB1. These results indicate an important role for ligand in determining pH-dependent binding and may explain different responses observed when the same ErbB receptor is stimulated by different ligands.


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Receptor tyrosine-protein kinase erbB-4
A, B
617Homo sapiensGene 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 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
YT3
Query on YT3

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Download CCD File 
B
YTTRIUM (III) ION
Y
GRTBAGCGDOYUBE-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

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Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
NDG
Query on NDG

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Download CCD File 
A, B
2-(ACETYLAMINO)-2-DEOXY-A-D-GLUCOPYRANOSE
C8 H15 N O6
OVRNDRQMDRJTHS-PVFLNQBWSA-N
 Ligand Interaction
NAG
Query on NAG

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.396 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.235 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 76.960α = 90.00
b = 203.090β = 90.00
c = 261.320γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
AMoREphasing
SCALEPACKdata scaling
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-09-27
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Advisory, Version format compliance
  • Version 1.3: 2017-10-11
    Type: Refinement description