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: 2.5 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.238 

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

  • 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. Electronic address: chris_cox@merck.com.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
cAMP and cAMP-inhibited cGMP 3',5'-cyclic phosphodiesterase 10A
A, B
323Homo sapiensMutation(s): 0 
Gene Names: PDE10A
EC: 3.1.4.17, 3.1.4.35
Find proteins for Q9Y233 (Homo sapiens)
Go to Gene View: PDE10A
Go to UniProtKB:  Q9Y233
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
4Q0
Query on 4Q0

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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
MG
Query on MG

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Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
4PX
Query on 4PX

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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
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
4Q0Ki: 0.2 nM (100) BINDINGDB
4Q0Ki: 0.15 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.238 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 51.070α = 90.00
b = 81.380β = 90.00
c = 159.180γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
BUSTERphasing
DENZOdata reduction
BUSTER-TNTrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



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
    Type: Database references