4I0S

Crystal structure of spleen tyrosine kinase complexed with 2-(6-Chloro-1-methyl-1H-indazol-3-yl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid isopropylamide

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.217 

wwPDB Validation 3D Report Full Report


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

Literature

Pyrrolopyrazines as selective spleen tyrosine kinase inhibitors.

Padilla, F., Bhagirath, N., Chen, S., Chiao, E., Goldstein, D.M., Hermann, J.C., Hsu, J., Kennedy-Smith, J.J., Kuglstatter, A., Liao, C., Liu, W., Lowrie, L.E., Luk, K.C., Lynch, S.M., Menke, J., Niu, L., Owens, T.D., O-Yang, C., Railkar, A., Schoenfeld, R.C., Slade, M., Steiner, S., Tan, Y.C., Villasenor, A.G., Wang, C., Wanner, J., Xie, W., Xu, D., Zhang, X., Zhou, M., Lucas, M.C.

(2013) J.Med.Chem. 56: 1677-1692

  • DOI: 10.1021/jm301720p
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    • We describe the discovery of several pyrrolopyrazines as potent and selective Syk inhibitors and the efforts that eventually led to the desired improvements in physicochemical properties and human whole blood potencies. Ultimately, our mouse model re ...

    We describe the discovery of several pyrrolopyrazines as potent and selective Syk inhibitors and the efforts that eventually led to the desired improvements in physicochemical properties and human whole blood potencies. Ultimately, our mouse model revealed unexpected toxicity that precluded us from further advancing this series.

    Organizational Affiliation: 

    Hoffmann-La Roche Inc., pRED, Pharma Research & Early Development, 340 Kingsland Street, Nutley, New Jersey 07110, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tyrosine-protein kinase SYK
A
291Homo sapiensMutation(s): 0 
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
1B5
Query on 1B5
Download SDF File 
Download CCD File 
A
2-(6-chloro-1-methyl-1H-indazol-3-yl)-N-(propan-2-yl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxamide
C18 H17 Cl N6 O
QROQIIGDSDRLDZ-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
1B5IC50: 36 - 16600 nM (100) BINDINGDB
1B5IC50: 36 nM BINDINGMOAD
1B5IC50: 36 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.217 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 39.797α = 90.00
b = 85.341β = 90.00
c = 90.212γ = 90.00
Software Package:
Software NamePurpose
MAR345data collection
REFMACrefinement
HKL-2000data scaling
HKL-2000data reduction
REFMACphasing

Structure Validation

View Full Validation Report or Ramachandran Plots


View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-10-30
    Type: Initial release
  • Version 1.1: 2017-11-15
    Type: Refinement description