3VNT

Crystal Structure of the Kinase domain of Human VEGFR2 with a [1,3]thiazolo[5,4-b]pyridine derivative


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.64 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.151 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Design and synthesis of novel DFG-out RAF/vascular endothelial growth factor receptor 2 (VEGFR2) inhibitors. 1. Exploration of [5,6]-fused bicyclic scaffolds

Okaniwa, M.Hirose, M.Imada, T.Ohashi, T.Hayashi, Y.Miyazaki, T.Arita, T.Yabuki, M.Kakoi, K.Kato, J.Takagi, T.Kawamoto, T.Yao, S.Sumita, A.Tsutsumi, S.Tottori, T.Oki, H.Sang, B.C.Yano, J.Aertgeerts, K.Yoshida, S.Ishikawa, T.

(2012) J.Med.Chem. 55: 3452-3478

  • DOI: 10.1021/jm300126x
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • To develop RAF/VEGFR2 inhibitors that bind to the inactive DFG-out conformation, we conducted structure-based drug design using the X-ray cocrystal structures of BRAF, starting from an imidazo[1,2-b]pyridazine derivative. We designed various [5,6]-fu ...

    To develop RAF/VEGFR2 inhibitors that bind to the inactive DFG-out conformation, we conducted structure-based drug design using the X-ray cocrystal structures of BRAF, starting from an imidazo[1,2-b]pyridazine derivative. We designed various [5,6]-fused bicyclic scaffolds (ring A, 1-6) possessing an anilide group that forms two hydrogen bond interactions with Cys532. Stabilizing the planarity of this anilide and the nitrogen atom on the six-membered ring of the scaffold was critical for enhancing BRAF inhibition. The selected [1,3]thiazolo[5,4-b]pyridine derivative 6d showed potent inhibitory activity in both BRAF and VEGFR2. Solid dispersion formulation of 6d (6d-SD) maximized its oral absorption in rats and showed significant suppression of ERK1/2 phosphorylation in an A375 melanoma xenograft model in rats by single administration. Tumor regression (T/C = -7.0%) in twice-daily repetitive studies at a dose of 50 mg/kg in rats confirmed that 6d is a promising RAF/VEGFR2 inhibitor showing potent anticancer activity.


    Organizational Affiliation

    Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-Chome, Fujisawa, Kanagawa 251-8555, Japan. masanori.okaniwa@takeda.com




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Vascular endothelial growth factor receptor 2
A
318Homo sapiensMutation(s): 0 
Gene Names: KDR (FLK1, VEGFR2)
EC: 2.7.10.1
Find proteins for P35968 (Homo sapiens)
Go to Gene View: KDR
Go to UniProtKB:  P35968
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EDO
Query on EDO

Download SDF File 
Download CCD File 
A
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
0JA
Query on 0JA

Download SDF File 
Download CCD File 
A
2-chloro-3-(1-cyanocyclopropyl)-N-[5-({2-[(cyclopropylcarbonyl)amino][1,3]thiazolo[5,4-b]pyridin-5-yl}oxy)-2-fluorophenyl]benzamide
C27 H19 Cl F N5 O3 S
MDPMAXSABUPRJI-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
0JAIC50: 2.2 nM BINDINGMOAD
0JAIC50: 2.2 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.64 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.151 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 135.615α = 90.00
b = 56.618β = 94.88
c = 51.819γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
REFMACrefinement
MOLREPphasing
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2012-01-17 
  • Released Date: 2012-04-11 
  • Deposition Author(s): Oki, H.

Revision History 

  • Version 1.0: 2012-04-11
    Type: Initial release
  • Version 1.1: 2013-08-07
    Type: Database references