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 

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

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: https://doi.org/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 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. Electronic address: chris_cox@merck.com.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
cAMP and cAMP-inhibited cGMP 3',5'-cyclic phosphodiesterase 10A
A, B
323Homo sapiensMutation(s): 0 
Gene Names: PDE10A
EC: 3.1.4.17 (PDB Primary Data), 3.1.4.35 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for Q9Y233 (Homo sapiens)
Explore Q9Y233 
Go to UniProtKB:  Q9Y233
PHAROS:  Q9Y233
GTEx:  ENSG00000112541 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9Y233
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
4Q0
Query on 4Q0

Download Ideal Coordinates CCD File 
H [auth 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
4PX
Query on 4PX

Download Ideal Coordinates CCD File 
E [auth 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
ZN
Query on ZN

Download Ideal Coordinates CCD File 
C [auth A],
F [auth B]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
MG
Query on MG

Download Ideal Coordinates CCD File 
D [auth A],
G [auth B]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
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



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

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

Revision History  (Full details and data files)

  • Version 1.0: 2015-08-12
    Type: Initial release
  • Version 1.1: 2015-10-28
    Changes: Database references
  • Version 1.2: 2023-09-27
    Changes: Data collection, Database references, Derived calculations, Refinement description