5CXH

SYK catalytic domain complexed with a potent orally bioavailable thiazole inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.175 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Orally bioavailable Syk inhibitors with activity in a rat PK/PD model.

Thoma, G.Veenstra, S.Strang, R.Blanz, J.Vangrevelinghe, E.Berghausen, J.Lee, C.C.Zerwes, H.G.

(2015) Bioorg.Med.Chem.Lett. 25: 4642-4647

  • DOI: 10.1016/j.bmcl.2015.08.037
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Design and optimization of benzo- and pyrido-thiazoles/isothiazoles are reported leading to the discovery of the potent, orally bioavailable Syk inhibitor 5, which was found to be active in a rat PK/PD model. Compound 5 showed acceptable overall kina ...

    Design and optimization of benzo- and pyrido-thiazoles/isothiazoles are reported leading to the discovery of the potent, orally bioavailable Syk inhibitor 5, which was found to be active in a rat PK/PD model. Compound 5 showed acceptable overall kinase selectivity. However, in addition to Syk it also inhibited Aurora kinase in enzymatic and cellular settings leading to findings in the micronucleus assay. As a consequence, compound 5 was not further pursued.


    Organizational Affiliation

    Global Discovery Chemistry, Novartis Institutes for Biomedical Research, 4056 Basel, Switzerland. Electronic address: gebhard.thoma@novartis.com.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tyrosine-protein kinase SYK
A
289Homo sapiensMutation(s): 1 
Gene Names: SYK
EC: 2.7.10.2
Find proteins for P43405 (Homo sapiens)
Go to Gene View: SYK
Go to UniProtKB:  P43405
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
55M
Query on 55M

Download SDF File 
Download CCD File 
A
(4R)-4-[(1R)-1-{[6-(3,4-dimethoxyphenyl)[1,3]thiazolo[5,4-c]pyridin-4-yl]oxy}ethyl]pyrrolidin-2-one
C20 H21 N3 O4 S
OTUKQYFHRKKGEI-DGCLKSJQSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
55MIC50: 5 - 517 nM (99) BINDINGDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.175 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 40.000α = 90.00
b = 85.343β = 90.00
c = 90.076γ = 90.00
Software Package:
Software NamePurpose
REFMACphasing
PDB_EXTRACTdata extraction
SCALEPACKdata scaling
HKL-2000data reduction
BUSTER-TNTrefinement
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2015-07-29 
  • Released Date: 2015-09-23 
  • Deposition Author(s): Lee, C.C.

Revision History 

  • Version 1.0: 2015-09-23
    Type: Initial release
  • Version 1.1: 2015-10-28
    Type: Database references
  • Version 1.2: 2015-12-16
    Type: Refinement description