5CXH

SYK catalytic domain complexed with a potent orally bioavailable thiazole inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.176 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


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:  
    5CXH, 5CXZ, 5CY3

  • 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 kinase selectivity ...

    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

    Autoimmunity, Transplantation and Inflammation Research, Novartis Institutes for Biomedical Research, 4056 Basel, Switzerland.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Tyrosine-protein kinase SYKA289Homo sapiensMutation(s): 1 
Gene Names: SYK
EC: 2.7.10.2
UniProt & NIH Common Fund Data Resources
Find proteins for P43405 (Homo sapiens)
Explore P43405 
Go to UniProtKB:  P43405
PHAROS:  P43405
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
55M (Subject of Investigation/LOI)
Query on 55M

Download Ideal Coordinates CCD File 
B [auth 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
Binding Affinity Annotations 
IDSourceBinding Affinity
55M BindingDB:  5CXH IC50: min: 5, max: 517 (nM) from 3 assay(s)
Binding MOAD:  5CXH IC50: 5 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.176 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 40α = 90
b = 85.343β = 90
c = 90.076γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
BUSTER-TNTrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction
REFMACphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment  



Entry History 

Deposition Data

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

Revision History  (Full details and data files)

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