6SM8

Human jak1 kinase domain in complex with inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.213 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Discovery of (2R)-N-[3-[2-[(3-Methoxy-1-methyl-pyrazol-4-yl)amino]pyrimidin-4-yl]-1H-indol-7-yl]-2-(4-methylpiperazin-1-yl)propenamide (AZD4205) as a Potent and Selective Janus Kinase 1 Inhibitor.

Su, Q.Banks, E.Bebernitz, G.Bell, K.Borenstein, C.F.Chen, H.Chuaqui, C.E.Deng, N.Ferguson, A.D.Kawatkar, S.Grimster, N.P.Ruston, L.Lyne, P.D.Read, J.A.Peng, X.Pei, X.Fawell, S.Tang, Z.Throner, S.Vasbinder, M.M.Wang, H.Winter-Holt, J.Woessner, R.Wu, A.Yang, W.Zinda, M.Kettle, J.G.

(2020) J Med Chem 63: 4517-4527

  • DOI: https://doi.org/10.1021/acs.jmedchem.9b01392
  • Primary Citation of Related Structures:  
    6SM8, 6SMB

  • PubMed Abstract: 

    JAK1, JAK2, JAK3, and TYK2 belong to the JAK (Janus kinase) family. They play critical roles in cytokine signaling. Constitutive activation of JAK/STAT pathways is associated with a wide variety of diseases. Particularly, pSTAT3 is observed in response to the treatment with inhibitors of oncogenic signaling pathways such as EGFR, MAPK, and AKT and is associated with resistance or poorer response to agents targeting these pathways. Among the JAK family kinases, JAK1 has been shown to be the primary driver of STAT3 phosphorylation and signaling; therefore, selective JAK1 inhibition can be a viable means to overcome such treatment resistances. Herein, an account of the medicinal chemistry optimization from the promiscuous kinase screening hit 3 to the candidate drug 21 (AZD4205), a highly selective JAK1 kinase inhibitor, is reported. Compound 21 has good preclinical pharmacokinetics. Compound 21 displayed an enhanced antitumor activity in combination with an approved EGFR inhibitor, osimertinib, in a preclinical non-small-cell lung cancer (NSCLC) xenograft NCI-H1975 model.


  • Organizational Affiliation

    Oncology R&D, AstraZeneca R&D, Waltham, Massachusetts 02451, United States.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Tyrosine-protein kinase JAK1302Homo sapiensMutation(s): 0 
Gene Names: JAK1JAK1AJAK1B
EC: 2.7.10.2
UniProt & NIH Common Fund Data Resources
Find proteins for P23458 (Homo sapiens)
Explore P23458 
Go to UniProtKB:  P23458
PHAROS:  P23458
GTEx:  ENSG00000162434 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP23458
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Tyrosine-protein kinase JAK1301Homo sapiensMutation(s): 0 
Gene Names: JAK1JAK1AJAK1B
EC: 2.7.10.2
UniProt & NIH Common Fund Data Resources
Find proteins for P23458 (Homo sapiens)
Explore P23458 
Go to UniProtKB:  P23458
PHAROS:  P23458
GTEx:  ENSG00000162434 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP23458
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.213 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 43.194α = 90
b = 174.065β = 94.16
c = 44.956γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
XSCALEdata scaling
AMoREphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2020-04-29
    Type: Initial release
  • Version 1.1: 2020-05-13
    Changes: Database references
  • Version 1.2: 2020-05-27
    Changes: Database references