5VO6

CRYSTAL STRUCTURE OF JAK3 KINASE DOMAIN IN COMPLEX WITH A PYRROLOPYRIDAZINE INHIBITOR


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.215 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Discovery of potent and efficacious pyrrolopyridazines as dual JAK1/3 inhibitors.

Hynes, J.Wu, H.Kempson, J.Duan, J.J.Lu, Z.Jiang, B.Stachura, S.Tokarski, J.S.Sack, J.S.Khan, J.A.Lippy, J.S.Zhang, R.F.Pitt, S.Shen, G.Gillooly, K.McIntyre, K.Carter, P.H.Barrish, J.C.Nadler, S.G.Salter-Cid, L.M.Fura, A.Schieven, G.L.Pitts, W.J.Wrobleski, S.T.

(2017) Bioorg Med Chem Lett 27: 3101-3106

  • DOI: 10.1016/j.bmcl.2017.05.043
  • Primary Citation of Related Structures:  
    5VO6

  • PubMed Abstract: 
  • A series of potent dual JAK1/3 inhibitors have been developed from a moderately selective JAK3 inhibitor. Substitution at the C6 position of the pyrrolopyridazine core with aryl groups provided exceptional biochemical potency against JAK1 and JAK3 wh ...

    A series of potent dual JAK1/3 inhibitors have been developed from a moderately selective JAK3 inhibitor. Substitution at the C6 position of the pyrrolopyridazine core with aryl groups provided exceptional biochemical potency against JAK1 and JAK3 while maintaining good selectivity against JAK2 and Tyk2. Translation to in vivo efficacy was observed in a murine model of chronic inflammation. X-ray co-crystal structure determination confirmed the presumed inhibitor binding orientation in JAK3. Efforts to reduce hERG channel inhibition will be described.


    Organizational Affiliation

    Research and Development, Bristol-Myers Squibb Research and Development, P.O. Box 4000, Princeton, NJ 08543, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Tyrosine-protein kinase JAK3A293Homo sapiensMutation(s): 2 
Gene Names: JAK3
EC: 2.7.10.2
Find proteins for P52333 (Homo sapiens)
Explore P52333 
Go to UniProtKB:  P52333
NIH Common Fund Data Resources
PHAROS  P52333
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
9J4
Query on 9J4

Download CCD File 
A
4-{[(1R,3S)-3-amino-2,2,3-trimethylcyclopentyl]amino}-6-phenylpyrrolo[1,2-b]pyridazine-3-carboxamide
C22 H27 N5 O
DIFGSGNUHRNWPK-GCJKJVERSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.215 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.35α = 90
b = 75.04β = 90
c = 86.96γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling
BUSTERrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2017-05-02 
  • Released Date: 2017-05-31 
  • Deposition Author(s): Sack, J.S.

Revision History 

  • Version 1.0: 2017-05-31
    Type: Initial release
  • Version 1.1: 2017-06-07
    Changes: Database references
  • Version 1.2: 2017-06-21
    Changes: Database references