5L3A

Fragment-based discovery of 6-arylindazole JAK inhibitors


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.233 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Fragment-Based Discovery of 6-Arylindazole JAK Inhibitors.

Ritzen, A.Srensen, M.D.Dack, K.N.Greve, D.R.Jerre, A.Carnerup, M.A.Rytved, K.A.Bagger-Bahnsen, J.

(2016) Acs Med.Chem.Lett. 7: 641-646

  • DOI: 10.1021/acsmedchemlett.6b00087

  • PubMed Abstract: 
  • Janus kinase (JAK) inhibitors are emerging as novel and efficacious drugs for treating psoriasis and other inflammatory skin disorders, but their full potential is hampered by systemic side effects. To overcome this limitation, we set out to discover ...

    Janus kinase (JAK) inhibitors are emerging as novel and efficacious drugs for treating psoriasis and other inflammatory skin disorders, but their full potential is hampered by systemic side effects. To overcome this limitation, we set out to discover soft drug JAK inhibitors for topical use. A fragment screen yielded an indazole hit that was elaborated into a potent JAK inhibitor using structure-based design. Growing the fragment by installing a phenol moiety in the 6-position afforded a greatly improved potency. Fine-tuning the substituents on the phenol and sulfonamide moieties afforded a set of compounds with lead-like properties, but they were found to be phototoxic and unstable in the presence of light.


    Organizational Affiliation

    Drug Design, In Vitro Biology, Skin PK and Early Safety, and Preformulation & Early Analytical Development, Global R&D, LEO Pharma A/S , Industriparken 55, DK-2750 Ballerup, Denmark.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tyrosine-protein kinase JAK2
A
295Homo 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 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
6DP
Query on 6DP

Download SDF File 
Download CCD File 
A
~{N}-(1~{H}-indazol-4-yl)methanesulfonamide
C8 H9 N3 O2 S
CAMWAWBWBXRPRP-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
6DPKd: 13000 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.233 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 108.140α = 90.00
b = 69.700β = 98.28
c = 50.650γ = 90.00
Software Package:
Software NamePurpose
REFMACphasing
Aimlessdata scaling
xia2data reduction
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-04-27
    Type: Initial release
  • Version 1.1: 2016-06-29
    Type: Database references
  • Version 1.2: 2019-04-03
    Type: Data collection, Source and taxonomy