6NSL

CRYSTAL STRUCTURE OF TYROSINE KINASE 2 JH2 (PSEUDO KINASE DOMAIN) COMPLEXED WITH Compound-6c AKA 6-((1-(4-CYANOPHENY L)-2-OXO-1,2-DIHYDRO-3-PYRIDINYL)AMINO)-N-CYCLOPROPYL-8-(M ETHYLAMINO)IMIDAZO[1,2-B]PYRIDAZINE-3-CARBOXAMIDE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.203 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Identification of Imidazo[1,2-b]pyridazine Derivatives as Potent, Selective, and Orally Active Tyk2 JH2 Inhibitors.

Liu, C.Lin, J.Moslin, R.Tokarski, J.S.Muckelbauer, J.Chang, C.Tredup, J.Xie, D.Park, H.Li, P.Wu, D.R.Strnad, J.Zupa-Fernandez, A.Cheng, L.Chaudhry, C.Chen, J.Chen, C.Sun, H.Elzinga, P.D'arienzo, C.Gillooly, K.Taylor, T.L.McIntyre, K.W.Salter-Cid, L.Lombardo, L.J.Carter, P.H.Aranibar, N.Burke, J.R.Weinstein, D.S.

(2019) ACS Med Chem Lett 10: 383-388

  • DOI: 10.1021/acsmedchemlett.9b00035
  • Primary Citation of Related Structures:  
    6NSL

  • PubMed Abstract: 
  • In sharp contrast to a previously reported series of 6-anilino imidazopyridazine based Tyk2 JH2 ligands, 6-((2-oxo- N 1-substituted-1,2-dihydropyridin-3-yl)amino)imidazo[1,2- b ]pyridazine analogs were found to display dramatically improved metabolic stability ...

    In sharp contrast to a previously reported series of 6-anilino imidazopyridazine based Tyk2 JH2 ligands, 6-((2-oxo- N 1-substituted-1,2-dihydropyridin-3-yl)amino)imidazo[1,2- b ]pyridazine analogs were found to display dramatically improved metabolic stability. The N1-substituent on 2-oxo-1,2-dihydropyridine ring can be a variety of alkyl, aryl, and heteroaryl groups, but among them, 2-pyridyl provided much enhanced Caco-2 permeability, attributed to its ability to form intramolecular hydrogen bonds. Further structure-activity relationship studies at the C3 position led to the identification of highly potent and selective Tyk2 JH2 inhibitor 6 , which proved to be highly effective in inhibiting IFNγ production in a rat pharmacodynamics model and fully efficacious in a rat adjuvant arthritis model.


    Organizational Affiliation

    Research & Development, Bristol-Myers Squibb, P.O. Box 5400, Princeton, New Jersey 08543, United States.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Non-receptor tyrosine-protein kinase TYK2A, B317Homo sapiensMutation(s): 0 
Gene Names: TYK2
EC: 2.7.10.2
UniProt & NIH Common Fund Data Resources
Find proteins for P29597 (Homo sapiens)
Explore P29597 
Go to UniProtKB:  P29597
PHAROS:  P29597
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
KZJ (Subject of Investigation/LOI)
Query on KZJ

Download Ideal Coordinates CCD File 
C [auth A], E [auth B]6-{[1-(4-cyanophenyl)-2-oxo-1,2-dihydropyridin-3-yl]amino}-N-cyclopropyl-8-(methylamino)imidazo[1,2-b]pyridazine-3-carboxamide
C23 H20 N8 O2
LMOIQLXOGZDGRD-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download Ideal Coordinates CCD File 
D [auth A], F [auth B], G [auth B]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.203 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70.015α = 90
b = 65.654β = 112.7
c = 74.68γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2020-01-29
    Type: Initial release
  • Version 1.1: 2020-04-15
    Changes: Database references