4QRC

Crystal Structure of the Tyrosine Kinase Domain of FGF Receptor 4 in Complex with Ponatinib


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.901 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.170 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

DFG-out Mode of Inhibition by an Irreversible Type-1 Inhibitor Capable of Overcoming Gate-Keeper Mutations in FGF Receptors.

Huang, Z.Tan, L.Wang, H.Liu, Y.Blais, S.Deng, J.Neubert, T.A.Gray, N.S.Li, X.Mohammadi, M.

(2015) Acs Chem.Biol. 10: 299-309

  • DOI: 10.1021/cb500674s
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Drug-resistance acquisition through kinase gate-keeper mutations is a major hurdle in the clinic. Here, we determined the first crystal structures of the human FGFR4 kinase domain (FGFR4K) alone and complexed with ponatinib, a promiscuous type-2 (DFG ...

    Drug-resistance acquisition through kinase gate-keeper mutations is a major hurdle in the clinic. Here, we determined the first crystal structures of the human FGFR4 kinase domain (FGFR4K) alone and complexed with ponatinib, a promiscuous type-2 (DFG-out) kinase inhibitor, and an oncogenic FGFR4K harboring the V550L gate-keeper mutation bound to FIIN-2, a new type-1 irreversible inhibitor. Remarkably, like ponatinib, FIIN-2 also binds in the DFG-out mode despite lacking a functional group necessary to occupy the pocket vacated upon the DFG-out flip. Structural analysis reveals that the covalent bond between FIIN-2 and a cysteine, uniquely present in the glycine-rich loop of FGFR kinases, facilitates the DFG-out conformation, which together with the internal flexibility of FIIN-2 enables FIIN-2 to avoid the steric clash with the gate-keeper mutation that causes the ponatinib resistance. The structural data provide a blueprint for the development of next generation anticancer inhibitors through combining the salient inhibitory mechanisms of ponatinib and FIIN-2.


    Organizational Affiliation

    School of Pharmacy, Wenzhou Medical University , Wenzhou, Zhejiang 325035, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Fibroblast growth factor receptor 4
A
323Homo sapiensMutation(s): 2 
Gene Names: FGFR4 (JTK2, TKF)
EC: 2.7.10.1
Find proteins for P22455 (Homo sapiens)
Go to Gene View: FGFR4
Go to UniProtKB:  P22455
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
0LI
Query on 0LI

Download SDF File 
Download CCD File 
A
3-(imidazo[1,2-b]pyridazin-3-ylethynyl)-4-methyl-N-{4-[(4-methylpiperazin-1-yl)methyl]-3-(trifluoromethyl)phenyl}benzamide
Ponatinib
C29 H27 F3 N6 O
PHXJVRSECIGDHY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.901 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.170 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 42.722α = 90.00
b = 61.593β = 97.94
c = 60.311γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
PHENIXrefinement
PHASERphasing
HKL-2000data collection
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-10-29
    Type: Initial release
  • Version 1.1: 2015-01-28
    Type: Database references