4RIW

Crystal structure of an EGFR/HER3 kinase domain heterodimer

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.287 
  • R-Value Work: 0.227 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history. 

Literature

Structural analysis of the EGFR/HER3 heterodimer reveals the molecular basis for activating HER3 mutations.

Littlefield, P., Liu, L., Mysore, V., Shan, Y., Shaw, D.E., Jura, N.

(2014) Sci.Signal. 7: ra114-ra114

  • DOI: 10.1126/scisignal.2005786
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    • The human epidermal growth factor receptor (HER) tyrosine kinases homo- and heterodimerize to activate downstream signaling pathways. HER3 is a catalytically impaired member of the HER family that contributes to the development of several human malig ...

    The human epidermal growth factor receptor (HER) tyrosine kinases homo- and heterodimerize to activate downstream signaling pathways. HER3 is a catalytically impaired member of the HER family that contributes to the development of several human malignancies and is mutated in a subset of cancers. HER3 signaling depends on heterodimerization with a catalytically active partner, in particular epidermal growth factor receptor (EGFR) (the founding family member, also known as HER1) or HER2. The activity of homodimeric complexes of catalytically active HER family members depends on allosteric activation between the two kinase domains. To determine the structural basis for HER3 signaling through heterodimerization with a catalytically active HER family member, we solved the crystal structure of the heterodimeric complex formed by the isolated kinase domains of EGFR and HER3. The structure showed HER3 as an allosteric activator of EGFR and revealed a conserved role of the allosteric mechanism in activation of HER family members through heterodimerization. To understand the effects of cancer-associated HER3 mutations at the molecular level, we solved the structures of two kinase domains of HER3 mutants, each in a heterodimeric complex with the kinase domain of EGFR. These structures, combined with biochemical analysis and molecular dynamics simulations, indicated that the cancer-associated HER3 mutations enhanced the allosteric activator function of HER3 by redesigning local interactions at the dimerization interface.

    Organizational Affiliation: 

    Cardiovascular Research Institute, University of California San Francisco, San Francisco, CA 94158, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Receptor tyrosine-protein kinase erbB-3
A, C
326Homo sapiensMutation(s): 0 
Gene Names: ERBB3 (HER3)
EC: 2.7.10.1
Find proteins for P21860 (Homo sapiens)
Go to Gene View: ERBB3
Go to UniProtKB:  P21860
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Epidermal growth factor receptor
B, D
345Homo sapiensMutation(s): 3 
Gene Names: EGFR (ERBB, ERBB1, HER1)
EC: 2.7.10.1
Find proteins for P00533 (Homo sapiens)
Go to Gene View: EGFR
Go to UniProtKB:  P00533
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP
Download SDF File 
Download CCD File 
B, D
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
ANP
Query on ANP
Download SDF File 
Download CCD File 
A, C
PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
C10 H17 N6 O12 P3
PVKSNHVPLWYQGJ-KQYNXXCUSA-N
 Ligand Interaction
MG
Query on MG
Download SDF File 
Download CCD File 
A, B, C, D
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.287 
  • R-Value Work: 0.227 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 65.780α = 90.00
b = 154.640β = 110.89
c = 86.970γ = 90.00
Software Package:
Software NamePurpose
Blu-Icedata collection
PHENIXrefinement
PHASERphasing
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots


View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-12-10
    Type: Initial release
  • Version 1.1: 2014-12-17
    Type: Database references