4ZO5

PDE10 complexed with 4-isopropoxy-2-(2-(3-(4-methoxyphenyl)-4-oxo-3,4-dihydroquinazolin-2-yl)ethyl)isoindoline-1,3-dione


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.238 
  • R-Value Observed: 0.241 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Discovery of [(11)C]MK-8193 as a PET tracer to measure target engagement of phosphodiesterase 10A (PDE10A) inhibitors.

Cox, C.D.Hostetler, E.D.Flores, B.A.Evelhoch, J.L.Fan, H.Gantert, L.Holahan, M.Eng, W.Joshi, A.McGaughey, G.Meng, X.Purcell, M.Raheem, I.T.Riffel, K.Yan, Y.Renger, J.J.Smith, S.M.Coleman, P.J.

(2015) Bioorg Med Chem Lett 25: 4893-4898

  • DOI: 10.1016/j.bmcl.2015.05.080
  • Primary Citation of Related Structures:  
    4ZO5

  • PubMed Abstract: 
  • Phosphodiesterase 10A (PDE10A) inhibition has recently been identified as a potential mechanism to treat multiple symptoms that manifest in schizophrenia. In order to facilitate preclinical development and support key proof-of-concept clinical trials ...

    Phosphodiesterase 10A (PDE10A) inhibition has recently been identified as a potential mechanism to treat multiple symptoms that manifest in schizophrenia. In order to facilitate preclinical development and support key proof-of-concept clinical trials of novel PDE10A inhibitors, it is critical to discover positron emission tomography (PET) tracers that enable plasma concentration/PDE10A occupancy relationships to be established across species with structurally diverse PDE10A inhibitors. In this Letter, we describe how a high-throughput screening hit was optimized to provide [(11)C]MK-8193 (8j), a PET tracer that supports the determination of plasma concentration/PDE10A occupancy relationships for structurally diverse series of PDE10A inhibitors in both rat and rhesus monkey.


    Organizational Affiliation

    Discovery Chemistry, Merck Research Laboratories, West Point, PA 19486, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
cAMP and cAMP-inhibited cGMP 3',5'-cyclic phosphodiesterase 10AAB323Homo sapiensMutation(s): 0 
Gene Names: PDE10A
EC: 3.1.4.17 (PDB Primary Data), 3.1.4.35 (PDB Primary Data)
Find proteins for Q9Y233 (Homo sapiens)
Explore Q9Y233 
Go to UniProtKB:  Q9Y233
NIH Common Fund Data Resources
PHAROS  Q9Y233
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
4Q0
Query on 4Q0

Download CCD File 
B
2-{2-[3-(4-methoxyphenyl)-4-oxo-3,4-dihydroquinazolin-2-yl]ethyl}-4-(propan-2-yloxy)-1H-isoindole-1,3(2H)-dione
C28 H25 N3 O5
UUAAHYNWZKQZBM-UHFFFAOYSA-N
 Ligand Interaction
4PX
Query on 4PX

Download CCD File 
A
3-(1-hydroxy-2-methylpropan-2-yl)-5-phenyl-3,5-dihydro-1H-imidazo[4,5-c][1,8]naphthyridine-2,4-dione
C19 H18 N4 O3
ZQRNBXXBVMUYDO-UHFFFAOYSA-N
 Ligand Interaction
ZN
Query on ZN

Download CCD File 
A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
4Q0Ki:  0.15000000596046448   nM  Binding MOAD
4Q0Ki:  0.15000000596046448   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.238 
  • R-Value Observed: 0.241 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 51.07α = 90
b = 81.38β = 90
c = 159.18γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
BUSTER-TNTrefinement
PDB_EXTRACTdata extraction
DENZOdata reduction
BUSTERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2015-05-06 
  • Released Date: 2015-08-12 
  • Deposition Author(s): Yan, Y.

Revision History 

  • Version 1.0: 2015-08-12
    Type: Initial release
  • Version 1.1: 2015-10-28
    Changes: Database references