4I4E

Structure of Focal Adhesion Kinase catalytic domain in complex with hinge binding pyrazolobenzothiazine compound.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.165 
  • R-Value Observed: 0.166 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Structure-based discovery of cellular-active allosteric inhibitors of FAK.

Tomita, N.Hayashi, Y.Suzuki, S.Oomori, Y.Aramaki, Y.Matsushita, Y.Iwatani, M.Iwata, H.Okabe, A.Awazu, Y.Isono, O.Skene, R.J.Hosfield, D.J.Miki, H.Kawamoto, T.Hori, A.Baba, A.

(2013) Bioorg Med Chem Lett 23: 1779-1785

  • DOI: 10.1016/j.bmcl.2013.01.047
  • Primary Citation of Related Structures:  
    4I4E, 4I4F

  • PubMed Abstract: 
  • In order to develop potent and selective focal adhesion kinase (FAK) inhibitors, synthetic studies on pyrazolo[4,3-c][2,1]benzothiazines targeted for the FAK allosteric site were carried out. Based on the X-ray structural analysis of the co-crystal of the lead compound, 8-(4-ethylphenyl)-5-methyl-1,5-dihydropyrazolo[4,3-c][2,1]benzothiazine 4,4-dioxide 1 with FAK, we designed and prepared 1,5-dimethyl-1,5-dihydropyrazolo[4,3-c][2,1]benzothiazin derivatives which selectively inhibited kinase activity of FAK without affecting seven other kinases ...

    In order to develop potent and selective focal adhesion kinase (FAK) inhibitors, synthetic studies on pyrazolo[4,3-c][2,1]benzothiazines targeted for the FAK allosteric site were carried out. Based on the X-ray structural analysis of the co-crystal of the lead compound, 8-(4-ethylphenyl)-5-methyl-1,5-dihydropyrazolo[4,3-c][2,1]benzothiazine 4,4-dioxide 1 with FAK, we designed and prepared 1,5-dimethyl-1,5-dihydropyrazolo[4,3-c][2,1]benzothiazin derivatives which selectively inhibited kinase activity of FAK without affecting seven other kinases. The optimized compound, N-(4-tert-butylbenzyl)-1,5-dimethyl-1,5-dihydropyrazolo[4,3-c][2,1]benzothiazin-8-amine 4,4-dioxide 30 possessed significant FAK kinase inhibitory activities both in cell-free (IC50=0.64μM) and in cellular assays (IC50=7.1μM). These results clearly demonstrated a potential of FAK allosteric inhibitors as antitumor agents.


    Organizational Affiliation

    Pharmaceutical Research Division, Takeda Pharmaceutical Company Ltd, 26-1 Muraoka-Higashi 2-Chome, Fujisawa, Kanagawa 251-8555, Japan. naoki.tomita@takeda.com



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Focal adhesion kinase 1A281Homo sapiensMutation(s): 0 
Gene Names: PTK2FAKFAK1
EC: 2.7.10.2
UniProt & NIH Common Fund Data Resources
Find proteins for Q05397 (Homo sapiens)
Explore Q05397 
Go to UniProtKB:  Q05397
PHAROS:  Q05397
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
1BQ (Subject of Investigation/LOI)
Query on 1BQ

Download Ideal Coordinates CCD File 
B [auth A][4-(2-hydroxyethyl)piperidin-1-yl][4-(5-methyl-4,4-dioxido-1,5-dihydropyrazolo[4,3-c][2,1]benzothiazin-8-yl)phenyl]methanone
C24 H26 N4 O4 S
FADYFQASOSLUAS-UHFFFAOYSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
1BQ PDBBind:  4I4E IC50: 500 (nM) from 1 assay(s)
Binding MOAD:  4I4E IC50: 500 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.165 
  • R-Value Observed: 0.166 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 45.584α = 90
b = 47.339β = 98.99
c = 62.686γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
MOLREPphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-03-06
    Type: Initial release
  • Version 1.1: 2013-04-24
    Changes: Database references