4EBW

Structure of Focal Adhesion Kinase catalytic domain in complex with novel allosteric inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.182 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Discovery and characterization of novel allosteric FAK inhibitors.

Iwatani, M.Iwata, H.Okabe, A.Skene, R.J.Tomita, N.Hayashi, Y.Aramaki, Y.Hosfield, D.J.Hori, A.Baba, A.Miki, H.

(2013) Eur.J.Med.Chem. 61: 49-60

  • DOI: 10.1016/j.ejmech.2012.06.035
  • Primary Citation of Related Structures:  4EBV

  • PubMed Abstract: 
  • Focal adhesion kinase (FAK) regulates cell survival and proliferation pathways. Here we report the discovery of a highly selective series of 1,5-dihydropyrazolo[4,3-c][2,1]benzothiazines that demonstrate a novel mode of allosteric inhibition of FAK. ...

    Focal adhesion kinase (FAK) regulates cell survival and proliferation pathways. Here we report the discovery of a highly selective series of 1,5-dihydropyrazolo[4,3-c][2,1]benzothiazines that demonstrate a novel mode of allosteric inhibition of FAK. These compounds showed slow dissociation from unphosphorylated FAK and were noncompetitive with ATP after long preincubation. Co-crystal structural analysis revealed that the compounds target a novel allosteric site within the C-lobe of the kinase domain, which induces disruption of ATP pocket formation leading to the inhibition of kinase activity. The potency of allosteric inhibition was reduced by phosphorylation of FAK. Coupled SAR analysis revealed that N-substitution of the fused pyrazole is critical to achieve allosteric binding and high selectivity among kinases.


    Organizational Affiliation

    Pharmaceutical Research Division, Takeda Pharmaceutical Company, Ltd., 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Focal adhesion kinase 1
A
304Homo sapiensGene Names: PTK2 (FAK, FAK1)
EC: 2.7.10.2
Find proteins for Q05397 (Homo sapiens)
Go to Gene View: PTK2
Go to UniProtKB:  Q05397
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
0PF
Query on 0PF

Download SDF File 
Download CCD File 
A
1-ethyl-8-(4-ethylphenyl)-5-methyl-1,5-dihydropyrazolo[4,3-c][2,1]benzothiazine 4,4-dioxide
C20 H21 N3 O2 S
LWMFYSSKMYKGNI-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
0PFIC50: 1000 - >30000 nM (100) BINDINGDB
0PFIC50: 8700 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.182 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 81.300α = 90.00
b = 47.860β = 118.39
c = 83.667γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data collection
PHASERphasing
HKL-2000data reduction
HKL-2000data scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-07-25
    Type: Initial release
  • Version 1.1: 2013-01-02
    Type: Database references
  • Version 1.2: 2013-01-16
    Type: Database references
  • Version 1.3: 2013-03-27
    Type: Database references