3TJC

Co-crystal structure of jak2 with thienopyridine 8


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.265 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Discovery of potent and highly selective thienopyridine janus kinase 2 inhibitors.

Schenkel, L.B.Huang, X.Cheng, A.Deak, H.L.Doherty, E.Emkey, R.Gu, Y.Gunaydin, H.Kim, J.L.Lee, J.Loberg, R.Olivieri, P.Pistillo, J.Tang, J.Wan, Q.Wang, H.L.Wang, S.W.Wells, M.C.Wu, B.Yu, V.Liu, L.Geuns-Meyer, S.

(2011) J.Med.Chem. 54: 8440-8450

  • DOI: 10.1021/jm200911r
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Developing Janus kinase 2 (Jak2) inhibitors has become a significant focus for small molecule drug discovery programs in recent years due to the identification of a Jak2 gain-of-function mutation in the majority of patients with myeloproliferative di ...

    Developing Janus kinase 2 (Jak2) inhibitors has become a significant focus for small molecule drug discovery programs in recent years due to the identification of a Jak2 gain-of-function mutation in the majority of patients with myeloproliferative disorders (MPD). Here, we describe the discovery of a thienopyridine series of Jak2 inhibitors that culminates with compounds showing 100- to >500-fold selectivity over the related Jak family kinases in enzyme assays. Selectivity for Jak2 was also observed in TEL-Jak cellular assays, as well as in cytokine-stimulated peripheral blood mononuclear cell (PBMC) and whole blood assays. X-ray cocrystal structures of 8 and 19 bound to the Jak2 kinase domain aided structure-activity relationship efforts and, along with a previously reported small molecule X-ray cocrystal structure of the Jak1 kinase domain, provided structural rationale for the observed high levels of Jak2 selectivity.


    Organizational Affiliation

    Department of Medicinal Chemistry, Amgen, Inc., 360 Binney Street, Cambridge, Massachusetts 02142, USA. laurie.schenkel@amgen.com




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tyrosine-protein kinase JAK2
A, B
298Homo 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
0TP
Query on 0TP

Download SDF File 
Download CCD File 
A, B
4-amino-N-methyl-2-[4-(morpholin-4-yl)phenyl]thieno[3,2-c]pyridine-7-carboxamide
C19 H20 N4 O2 S
JNNQSTULXLHQBB-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 %)
0TPIC50: 31 - 3940 nM (100) BINDINGDB
0TPIC50: 31 nM BINDINGMOAD
0TPIC50: 31 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.265 
  • Space Group: P 41
Unit Cell:
Length (Å)Angle (°)
a = 112.470α = 90.00
b = 112.470β = 90.00
c = 70.820γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
SCALEPACKdata scaling
DENZOdata reduction
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2011-08-24 
  • Released Date: 2011-11-30 
  • Deposition Author(s): Huang, X.

Revision History 

  • Version 1.0: 2011-11-30
    Type: Initial release
  • Version 1.1: 2011-12-28
    Type: Database references