5W4W

Identification and Profiling of a Selective and Brain Penetrant Radioligand for In Vivo Target Occupancy Measurement of Casein Kinase 1 (CK1) Inhibitors


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.99 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.180 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Identification and Profiling of a Selective and Brain Penetrant Radioligand for in Vivo Target Occupancy Measurement of Casein Kinase 1 (CK1) Inhibitors.

Wager, T.T.Galatsis, P.Chandrasekaran, R.Y.Butler, T.W.Li, J.Zhang, L.Mente, S.Subramanyam, C.Liu, S.Doran, A.C.Chang, C.Fisher, K.Grimwood, S.Hedde, J.R.Marconi, M.Schildknegt, K.

(2017) ACS Chem Neurosci 8: 1995-2004

  • DOI: 10.1021/acschemneuro.7b00155

  • PubMed Abstract: 
  • To enable the clinical development of our CNS casein kinase 1 delta/epsilon (CK1δ/ε) inhibitor project, we investigated the possibility of developing a CNS positron emission tomography (PET) radioligand. For this effort, we focused our design and syn ...

    To enable the clinical development of our CNS casein kinase 1 delta/epsilon (CK1δ/ε) inhibitor project, we investigated the possibility of developing a CNS positron emission tomography (PET) radioligand. For this effort, we focused our design and synthesis efforts on the initial CK1δ/ε inhibitor HTS hits with the goal of identifying a compound that would fulfill a set of recommended PET ligand criteria. We identified [3H]PF-5236216 (9) as a tool ligand that meets most of the key CNS PET attributes including high CNS MPO PET desirability score and kinase selectivity, CNS penetration, and low nonspecific binding. We further used [3H]-9 to determine the binding affinity for PF-670462, a literature CK1δ/ε inhibitor tool compound. Lastly, [3H]-9 was used to measure in vivo target occupancy (TO) of PF-670462 in mouse and correlated TO with CK1δ/ε in vivo pharmacology (circadian rhythm modulation).


    Organizational Affiliation

    Worldwide Medicinal Chemistry, Pfizer Worldwide Research and Development , 1 Portland, Cambridge, Massachusetts 02139, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Casein kinase I isoform delta
A, B, C, D
331Homo sapiensMutation(s): 0 
Gene Names: CSNK1D (HCKID)
EC: 2.7.11.1
Find proteins for P48730 (Homo sapiens)
Go to Gene View: CSNK1D
Go to UniProtKB:  P48730
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B, C, D
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
9WG
Query on 9WG

Download SDF File 
Download CCD File 
A, B, C, D
4-[3-(4-fluorophenyl)-1-methyl-1H-pyrazol-4-yl]-6-methyl-6,7-dihydro-5H-pyrrolo[3,4-b]pyridin-5-one
C18 H15 F N4 O
NGDXEOHYWJHBTJ-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
9WGIC50: 8 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.99 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.180 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 48.884α = 70.37
b = 84.584β = 74.27
c = 89.042γ = 86.77
Software Package:
Software NamePurpose
BUSTERrefinement
SCALAdata scaling
XDSdata reduction
BUSTERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2017-06-13 
  • Released Date: 2017-06-28 
  • Deposition Author(s): Liu, S.

Revision History 

  • Version 1.0: 2017-06-28
    Type: Initial release
  • Version 1.1: 2017-10-04
    Type: Database references