5H8G

Crystal structure of CK2 with compound 7b


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.159 
  • R-Value Observed: 0.161 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Potent and Selective CK2 Kinase Inhibitors with Effects on Wnt Pathway Signaling in Vivo.

Dowling, J.E.Alimzhanov, M.Bao, L.Chuaqui, C.Denz, C.R.Jenkins, E.Larsen, N.A.Lyne, P.D.Pontz, T.Ye, Q.Holdgate, G.A.Snow, L.O'Connell, N.Ferguson, A.D.

(2016) ACS Med Chem Lett 7: 300-305

  • DOI: https://doi.org/10.1021/acsmedchemlett.5b00452
  • Primary Citation of Related Structures:  
    5H8B, 5H8E, 5H8G

  • PubMed Abstract: 

    The Wnt pathway is an evolutionarily conserved and tightly regulated signaling network with important roles in embryonic development and adult tissue regeneration. Impaired Wnt pathway regulation, arising from mutations in Wnt signaling components, such as Axin, APC, and β-catenin, results in uncontrolled cell growth and triggers oncogenesis. To explore the reported link between CK2 kinase activity and Wnt pathway signaling, we sought to identify a potent, selective inhibitor of CK2 suitable for proof of concept studies in vivo. Starting from a pyrazolo[1,5-a]pyrimidine lead (2), we identified compound 7h, a potent CK2 inhibitor with picomolar affinity that is highly selectivity against other kinase family enzymes and inhibits Wnt pathway signaling (IC50 = 50 nM) in DLD-1 cells. In addition, compound 7h has physicochemical properties that are suitable for formulation as an intravenous solution, has demonstrated good pharmacokinetics in preclinical species, and exhibits a high level of activity as a monotherapy in HCT-116 and SW-620 xenografts.


  • Organizational Affiliation

    Oncology Innovative Medicines Unit, AstraZeneca R&D , 35 Gatehouse Drive, Waltham, Massachusetts 02451, United States.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Casein kinase II subunit alpha333Homo sapiensMutation(s): 0 
Gene Names: CSNK2A1CK2A1
EC: 2.7.11.1
UniProt & NIH Common Fund Data Resources
Find proteins for P68400 (Homo sapiens)
Explore P68400 
Go to UniProtKB:  P68400
PHAROS:  P68400
GTEx:  ENSG00000101266 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP68400
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
5Y4
Query on 5Y4

Download Ideal Coordinates CCD File 
V [auth A]~{N}-[5-[[3-cyano-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidin-5-yl]amino]-2-[2-(dimethylamino)ethyl-methyl-amino]phenyl]ethanamide
C23 H29 N9 O
SRABOMKMQRYXIK-UHFFFAOYSA-N
EDO
Query on EDO

Download Ideal Coordinates CCD File 
D [auth A]
E [auth A]
F [auth A]
G [auth A]
H [auth A]
D [auth A],
E [auth A],
F [auth A],
G [auth A],
H [auth A],
I [auth A],
J [auth A],
K [auth A],
L [auth A],
M [auth A],
N [auth A],
O [auth A],
P [auth A],
Q [auth A],
R [auth A],
S [auth A],
T [auth A],
U [auth A]
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
CL
Query on CL

Download Ideal Coordinates CCD File 
B [auth A],
C [auth A]
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
Binding Affinity Annotations 
IDSourceBinding Affinity
5Y4 BindingDB:  5H8G Kd: 0.05 (nM) from 1 assay(s)
IC50: min: 3, max: 4000 (nM) from 2 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.159 
  • R-Value Observed: 0.161 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.81α = 90
b = 78.81β = 90
c = 81.88γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
XDSdata reduction
Aimlessdata scaling
MOLREPphasing
Cootmodel building

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-02-10
    Type: Initial release
  • Version 1.1: 2016-03-30
    Changes: Database references
  • Version 1.2: 2023-09-27
    Changes: Data collection, Database references, Derived calculations, Refinement description