3ZMM

Inhibitors of Jak2 Kinase domain

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.51 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.193 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history. 

Literature

Discovery of Novel Jak2-Stat Pathway Inhibitors with Extended Residence Time on Target.

Guan, H., Lamb, M.L., Peng, B., Huang, S., Degrace, N., Read, J., Hussain, S., Wu, J., Rivard, C., Alimzhanov, M., Bebernitz, G., Bell, K., Ye, M., Zinda, M., Ioannidis, S.

(2013) Bioorg.Med.Chem.Lett. 23: 3105

  • DOI: 10.1016/j.bmcl.2013.02.111

  • PubMed Abstract: 

    • The discovery of the activating mutation V617F in the JH2 domain of Jak2 and the modulation of oncogenic Stat3 by Jak2 inhibitors have spurred a great interest in the inhibition of the Jak2/Stat pathway in oncology. In this Letter, we communicate the ...

    The discovery of the activating mutation V617F in the JH2 domain of Jak2 and the modulation of oncogenic Stat3 by Jak2 inhibitors have spurred a great interest in the inhibition of the Jak2/Stat pathway in oncology. In this Letter, we communicate the discovery of novel inhibitors of the Jak2/Stat5 axis, the N-(1H-pyrazol-3-yl)pyrimidin-2-amino derivatives. The rationale, synthesis and biological evaluation of these derivatives are reported. Two lead analogs from this series, 6 and 9, displayed prolonged residence time on Jak2, at enzymatic level. Although 6 and 9 exhibited moderate selectivity in a selected kinase panel, we chose to test these inhibitors in vivo as a consequence to their long residence time. However, extended inhibition of Jak2 due to the long residence time, in the form of inhibiting phosphorylation of downstream Stat5, was not recapitulated in an in vivo setting.

    Organizational Affiliation: 

    Department of Cancer Chemistry, Oncology Innovative Medicines Unit, AstraZeneca R&D Boston, 35 Gatehouse Drive, Waltham, MA 02451, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TYROSINE-PROTEIN KINASE JAK2
A, B
298Homo sapiensMutation(s): 2 
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 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
F9J
Query on F9J
Download SDF File 
Download CCD File 
A, B
5-FLUORO-4-[(1S)-1-(5-FLUOROPYRIMIDIN-2-YL)ETHOXY]-N-(5-METHYL-1H-PYRAZOL-3-YL)-6-MORPHOLINO-PYRIMIDIN-2-AMINE
C18 H20 F2 N8 O2
NFYAORHLODKCQX-NSHDSACASA-N
 Ligand Interaction
ACE
Query on ACE
Download SDF File 
Download CCD File 
A, B
ACETYL GROUP
C2 H4 O
IKHGUXGNUITLKF-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 %)
F9JKi: 0.7 nM (98) BINDINGDB
F9JKi: 0.72 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.51 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.193 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 44.506α = 90.00
b = 126.688β = 97.22
c = 135.593γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
MOSFLMdata reduction
AMoREphasing
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots


View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-04-17
    Type: Initial release
  • Version 1.1: 2013-05-08
    Type: Database references, Source and taxonomy
  • Version 1.2: 2017-06-28
    Type: Data collection