4HGE

JAK2 kinase (JH1 domain) in complex with compound 8


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.181 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Discovery of potent and selective pyrazolopyrimidine janus kinase 2 inhibitors.

Hanan, E.J.van Abbema, A.Barrett, K.Blair, W.S.Blaney, J.Chang, C.Eigenbrot, C.Flynn, S.Gibbons, P.Hurley, C.A.Kenny, J.R.Kulagowski, J.Lee, L.Magnuson, S.R.Morris, C.Murray, J.Pastor, R.M.Rawson, T.Siu, M.Ultsch, M.Zhou, A.Sampath, D.Lyssikatos, J.P.

(2012) J.Med.Chem. 55: 10090-10107

  • DOI: 10.1021/jm3012239

  • PubMed Abstract: 
  • The discovery of somatic Jak2 mutations in patients with chronic myeloproliferative neoplasms has led to significant interest in discovering selective Jak2 inhibitors for use in treating these disorders. A high-throughput screening effort identified ...

    The discovery of somatic Jak2 mutations in patients with chronic myeloproliferative neoplasms has led to significant interest in discovering selective Jak2 inhibitors for use in treating these disorders. A high-throughput screening effort identified the pyrazolo[1,5-a]pyrimidine scaffold as a potent inhibitor of Jak2. Optimization of lead compounds 7a-b and 8 in this chemical series for activity against Jak2, selectivity against other Jak family kinases, and good in vivo pharmacokinetic properties led to the discovery of 7j. In a SET2 xenograft model that is dependent on Jak2 for growth, 7j demonstrated a time-dependent knock-down of pSTAT5, a downstream target of Jak2.


    Organizational Affiliation

    Department of Discovery Chemistry, Genentech, Inc. 1 DNA Way, South San Francisco, California 94080, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tyrosine-protein kinase JAK2
A, B
300Homo sapiensMutation(s): 0 
Gene Names: JAK2
EC: 2.7.10.2
Find proteins for O60674 (Homo sapiens)
Go to Gene View: JAK2
Go to UniProtKB:  O60674
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
15V
Query on 15V

Download SDF File 
Download CCD File 
A, B
N-[1-(3-chlorophenyl)-3-methyl-1H-pyrazol-5-yl]pyrazolo[1,5-a]pyrimidine-3-carboxamide
C17 H13 Cl N6 O
YLBXBHSEZZNJPX-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
PTR
Query on PTR
A, B
L-PEPTIDE LINKINGC9 H12 N O6 PTYR
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
15VKi: 11.9 nM (100) BINDINGDB
15VKi: 11.9 nM BINDINGMOAD
15VKi: 11.9 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.181 
  • Space Group: P 41
Unit Cell:
Length (Å)Angle (°)
a = 111.898α = 90.00
b = 111.898β = 90.00
c = 70.572γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
HKL-2000data reduction
BOSdata collection
HKL-2000data scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-10-24
    Type: Initial release
  • Version 1.1: 2012-12-12
    Type: Database references