4FK6

JAK1 kinase (JH1 domain) in complex with compound 72


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.211 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structure-based discovery of C-2 substituted imidazo-pyrrolopyridine JAK1 inhibitors with improved selectivity over JAK2.

Labadie, S.Dragovich, P.S.Barrett, K.Blair, W.S.Bergeron, P.Chang, C.Deshmukh, G.Eigenbrot, C.Ghilardi, N.Gibbons, P.Hurley, C.A.Johnson, A.Kenny, J.R.Kohli, P.B.Kulagowski, J.J.Liimatta, M.Lupardus, P.J.Mendonca, R.Murray, J.M.Pulk, R.Shia, S.Steffek, M.Ubhayakar, S.Ultsch, M.van Abbema, A.Ward, S.Zak, M.

(2012) Bioorg Med Chem Lett 22: 7627-7633

  • DOI: 10.1016/j.bmcl.2012.10.008
  • Primary Citation of Related Structures:  
    4FK6

  • PubMed Abstract: 
  • Herein we describe our successful efforts in obtaining C-2 substituted imidazo-pyrrolopyridines with improved JAK1 selectivity relative to JAK2 by targeting an amino acid residue that differs between the two isoforms (JAK1: E966; JAK2: D939). Efforts to improve cellular potency by reducing the polarity of the inhibitors are also detailed ...

    Herein we describe our successful efforts in obtaining C-2 substituted imidazo-pyrrolopyridines with improved JAK1 selectivity relative to JAK2 by targeting an amino acid residue that differs between the two isoforms (JAK1: E966; JAK2: D939). Efforts to improve cellular potency by reducing the polarity of the inhibitors are also detailed. The X-ray crystal structure of a representative inhibitor in complex with the JAK1 enzyme is also disclosed.


    Organizational Affiliation

    Small Molecule Discovery Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States. sharadal@gene.com



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Tyrosine-protein kinase JAK1 AB302Homo sapiensMutation(s): 0 
Gene Names: JAK1JAK1AJAK1B
EC: 2.7.10.2
Find proteins for P23458 (Homo sapiens)
Explore P23458 
Go to UniProtKB:  P23458
NIH Common Fund Data Resources
PHAROS:  P23458
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
0UJ
Query on 0UJ

Download Ideal Coordinates CCD File 
A, B
N-({1-[(1R,2R,4S)-bicyclo[2.2.1]hept-2-yl]-1,6-dihydroimidazo[4,5-d]pyrrolo[2,3-b]pyridin-2-yl}methyl)methanesulfonamide
C17 H21 N5 O2 S
IQHKHGHDPGFXAV-MISXGVKJSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
PTR
Query on PTR
A,BL-PEPTIDE LINKINGC9 H12 N O6 PTYR
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
0UJKi:  0.30000001192092896   nM  BindingDB
0UJEC50:  355   nM  BindingDB
0UJKi:  0.20000000298023224   nM  BindingDB
0UJKi:  3.200000047683716   nM  BindingDB
0UJKi :  0.20000000298023224   nM  PDBBind
0UJIC50:  1   nM  BindingDB
0UJEC50:  118   nM  BindingDB
0UJEC50:  30   nM  BindingDB
0UJKi:  0.20000000298023224   nM  Binding MOAD
0UJEC50:  13   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.211 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 43.248α = 90
b = 169.966β = 90.51
c = 43.805γ = 90
Software Package:
Software NamePurpose
Blu-Icedata collection
PHASERphasing
BUSTERrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-11-07
    Type: Initial release
  • Version 1.1: 2012-12-12
    Changes: Database references