3E64

Fragment based discovery of JAK-2 inhibitors


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.169 
  • R-Value Observed: 0.172 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Fragment-based discovery of JAK-2 inhibitors.

Antonysamy, S.Hirst, G.Park, F.Sprengeler, P.Stappenbeck, F.Steensma, R.Wilson, M.Wong, M.

(2009) Bioorg Med Chem Lett 19: 279-282

  • DOI: 10.1016/j.bmcl.2008.08.064
  • Primary Citation of Related Structures:  
    3E64, 3E62, 3E63

  • PubMed Abstract: 
  • Fragment-based hit identification coupled with crystallographically enabled structure-based drug design was used to design potent inhibitors of JAK-2. After two iterations from fragment 1, we were able to increase potency by greater than 500-fold to ...

    Fragment-based hit identification coupled with crystallographically enabled structure-based drug design was used to design potent inhibitors of JAK-2. After two iterations from fragment 1, we were able to increase potency by greater than 500-fold to provide sulfonamide 13, a 78-nM JAK-2 inhibitor.


    Organizational Affiliation

    Medicinal Chemistry, SGX Pharmaceuticals, Inc, San Diego, CA 92121, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Tyrosine-protein kinase JAK2A293Homo sapiensMutation(s): 0 
Gene Names: JAK2
EC: 2.7.10.2
Find proteins for O60674 (Homo sapiens)
Explore O60674 
Go to UniProtKB:  O60674
NIH Common Fund Data Resources
PHAROS  O60674
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
5B3
Query on 5B3

Download CCD File 
A
4-(3-amino-1H-indazol-5-yl)-N-tert-butylbenzenesulfonamide
C17 H20 N4 O2 S
KFJCXIOVAGJCKB-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
PTR
Query on PTR
AL-PEPTIDE LINKINGC9 H12 N O6 PTYR
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
5B3IC50:  78   nM  Binding MOAD
5B3IC50:  78   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.169 
  • R-Value Observed: 0.172 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 93.443α = 90
b = 103.121β = 90
c = 68.12γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-10-14
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2012-02-01
    Changes: Structure summary
  • Version 1.3: 2012-02-08
    Changes: Structure summary