4RX8

SYK Catalytic Domain Complexed with a Potent Triazine Inhibitor2

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.59 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.175 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history. 


Literature

Discovery and profiling of a selective and efficacious syk inhibitor.

Thoma, G., Smith, A.B., van Eis, M.J., Vangrevelinghe, E., Blanz, J., Aichholz, R., Littlewood-Evans, A., Lee, C.C., Liu, H., Zerwes, H.G.

(2015) J Med Chem 58: 1950-1963

  • DOI: https://doi.org/10.1021/jm5018863
  • Primary Citation of Related Structures:  
    4RX7, 4RX8, 4RX9

  • PubMed Abstract: 

    • We describe the discovery of selective and potent Syk inhibitor 11, which exhibited favorable PK profiles in rat and dog and was found to be active in a collagen-induced arthritis model in rats. Compound 11 was selected for further profiling, but, unfortunately, in GLP toxicological studies it showed liver findings in rat and dog ...

    We describe the discovery of selective and potent Syk inhibitor 11, which exhibited favorable PK profiles in rat and dog and was found to be active in a collagen-induced arthritis model in rats. Compound 11 was selected for further profiling, but, unfortunately, in GLP toxicological studies it showed liver findings in rat and dog. Nevertheless, 11 could become a valuable tool compound to investigate the rich biology of Syk in vitro and in vivo.

    Organizational Affiliation: 

    Global Discovery Chemistry, ‡Analytical Sciences & Imaging, §Autoimmunity, Transplantation and Inflammation Research, Novartis Institutes for Biomedical Research , 4056 Basel, Switzerland.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Tyrosine-protein kinase SYK289Homo sapiensMutation(s): 0 
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
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP43405
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
3YX
Query on 3YX
Download Ideal Coordinates CCD File 
D [auth A]3-{[(1R,2S)-2-aminocyclohexyl]amino}-5-(1H-indol-7-ylamino)-1,2,4-triazine-6-carboxamide
C18 H22 N8 O
FPQNRXITKTZFMF-NWDGAFQWSA-N		 Ligand Interaction
GOL
Query on GOL
Download Ideal Coordinates CCD File 
B [auth A],
C [auth A]		GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N		 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
3YX BindingDB:  4RX8 Kd: 0.64 (nM) from 1 assay(s)
IC50: min: 23, max: 367 (nM) from 4 assay(s)
Binding MOAD:  4RX8 IC50: 35 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.59 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.175 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 39.955α = 90
b = 85.333β = 90
c = 89.53γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
BUSTER-TNTrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction
HKL-2000data scaling
BUSTERrefinement

Structure Validation

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Ligand Structure Quality Assessment 


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Entry History 

Deposition Data

  • Released Date: 2015-03-18 
    • Deposition Author(s): Lee, C.C.

Revision History  (Full details and data files)

  • Version 1.0: 2015-03-18
    Type: Initial release
  • Version 1.1: 2017-11-22
    Changes: Refinement description