4OTW

HER3 pseudokinase domain bound to bosutinib


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.506 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.199 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

An ATP-Competitive Inhibitor Modulates the Allosteric Function of the HER3 Pseudokinase.

Littlefield, P.Moasser, M.M.Jura, N.

(2014) Chem.Biol. 21: 453-458

  • DOI: 10.1016/j.chembiol.2014.02.011

  • PubMed Abstract: 
  • Human epidermal growth factor receptor 3 (HER3) is a receptor tyrosine kinase that lacks catalytic activity but is essential for cellular homeostasis due to its ability to allosterically activate EGFR and HER2. Although catalytically inactive, HER3 b ...

    Human epidermal growth factor receptor 3 (HER3) is a receptor tyrosine kinase that lacks catalytic activity but is essential for cellular homeostasis due to its ability to allosterically activate EGFR and HER2. Although catalytically inactive, HER3 binds ATP tightly, hinting at a possible role of the nucleotide-binding pocket in modulating HER3 function. We report a structure of the HER3 pseudokinase bound to the ATP-competitive inhibitor bosutinib. Previously solved structures show that bosutinib can potently interact with multiple kinase domain conformations. In complex with HER3, bosutinib binds to yet another conformation, which is nearly identical to that observed in the HER3-ATP complex. Interestingly, occupation of the ATP-binding site by bosutinib improves the ability of HER3 to act as an allosteric activator of EGFR in vitro by increasing the affinity of the HER3-EGFR heterodimer in a membrane-dependent manner.


    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
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
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
DB8
Query on DB8

Download SDF File 
Download CCD File 
A
4-[(2,4-dichloro-5-methoxyphenyl)amino]-6-methoxy-7-[3-(4-methylpiperazin-1-yl)propoxy]quinoline-3-carbonitrile
Bosutinib
C26 H29 Cl2 N5 O3
UBPYILGKFZZVDX-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
DB8Kd: 0.8 nM (99) BINDINGDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.506 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.199 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 116.316α = 90.00
b = 116.316β = 90.00
c = 58.140γ = 120.00
Software Package:
Software NamePurpose
Blu-Icedata collection
PHASERphasing
MOSFLMdata reduction
SCALAdata scaling
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-04-02
    Type: Initial release
  • Version 1.1: 2014-05-14
    Type: Database references
  • Version 1.2: 2014-08-13
    Type: Other