6OBF

JAK2 JH2 in complex with JAK179


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.71 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.199 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Selective Janus Kinase 2 (JAK2) Pseudokinase Ligands with a Diaminotriazole Core.

Liosi, M.E.Krimmer, S.G.Newton, A.S.Dawson, T.K.Puleo, D.E.Cutrona, K.J.Suzuki, Y.Schlessinger, J.Jorgensen, W.L.

(2020) J Med Chem 63: 5324-5340

  • DOI: https://doi.org/10.1021/acs.jmedchem.0c00192
  • Primary Citation of Related Structures:  
    6OAV, 6OBB, 6OBF, 6OBL, 6OCC

  • PubMed Abstract: 

    Janus kinases (JAKs) are non-receptor tyrosine kinases that are essential components of the JAK-STAT signaling pathway. Associated aberrant signaling is responsible for many forms of cancer and disorders of the immune system. The present focus is on the discovery of molecules that may regulate the activity of JAK2 by selective binding to the JAK2 pseudokinase domain, JH2. Specifically, the Val617Phe mutation in JH2 stimulates the activity of the adjacent kinase domain (JH1) resulting in myeloproliferative disorders. Starting from a non-selective screening hit, we have achieved the goal of discovering molecules that preferentially bind to the ATP binding site in JH2 instead of JH1. We report the design and synthesis of the compounds and binding results for the JH1, JH2, and JH2 V617F domains, as well as five crystal structures for JH2 complexes. Testing with a selective and non-selective JH2 binder on the autophosphorylation of wild-type and V617F JAK2 is also contrasted.


  • Organizational Affiliation

    Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Tyrosine-protein kinase JAK2289Homo sapiensMutation(s): 3 
Gene Names: JAK2
EC: 2.7.10.2
UniProt & NIH Common Fund Data Resources
Find proteins for O60674 (Homo sapiens)
Explore O60674 
Go to UniProtKB:  O60674
PHAROS:  O60674
GTEx:  ENSG00000096968 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO60674
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
M4G
Query on M4G

Download Ideal Coordinates CCD File 
C [auth A][4-({5-amino-3-[(4-sulfamoylphenyl)amino]-1H-1,2,4-triazole-1-carbonyl}amino)phenoxy]acetic acid
C17 H17 N7 O6 S
QQXWNIAQCDPFCH-UHFFFAOYSA-N
GOL
Query on GOL

Download Ideal Coordinates CCD File 
B [auth A]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
M4G BindingDB:  6OBF Kd: min: 310, max: 4.23e+4 (nM) from 4 assay(s)
IC50: min: 4.65e+4, max: 1.00e+5 (nM) from 2 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.71 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.199 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 44.246α = 90
b = 57.395β = 111.2
c = 60.617γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM32136
German Research Foundation (DFG)GermanyKR5228/1-1

Revision History  (Full details and data files)

  • Version 1.0: 2020-03-25
    Type: Initial release
  • Version 1.1: 2021-04-28
    Changes: Database references
  • Version 1.2: 2023-10-11
    Changes: Data collection, Database references, Refinement description