4I0T

Crystal structure of spleen tyrosine kinase complexed with 2-(5,6,7,8-Tetrahydro-imidazo[1,5-a]pyridin-1-yl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid tert-butylamide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.234 

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
1B6
Query on 1B6

Download SDF File 
Download CCD File 
A
N-tert-butyl-2-(5,6,7,8-tetrahydroimidazo[1,5-a]pyridin-1-yl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxamide
C18 H22 N6 O
NEVNJCLJFXHCCC-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
1B6IC50: 26 - 634 nM (100) BINDINGDB
1B6IC50: 26 nM BINDINGMOAD
1B6IC50: 26 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.234 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 39.854α = 90.00
b = 87.405β = 90.00
c = 88.867γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
SCALAdata scaling
REFMACphasing
MAR345data collection
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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