ISDA

Deposition Date 2015-05-06

Release Date 2015-08-12

Last Version Date 2023-09-27

Entry Detail

PDB ID:

4ZO5

Keywords:

hydrolase/hydrolase inhibitor

Title:

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

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.50 Å

R-Value Free:

0.28

R-Value Work:

0.23

R-Value Observed:

0.24

Space Group:

P 21 21 21

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:cAMP and cAMP-inhibited cGMP 3',5'-cyclic phosphodiesterase 10A
Gene (Uniprot):PDE10A
Chain IDs:A, B
Chain Length:323
Number of Molecules:2
Biological Source:Homo sapiens

UniProt ID:Q9Y233 EC:3.1.4.17

Ligand Molecules

4PX

4Q0

Primary Citation

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.Show

Bioorg.Med.Chem.Lett. 25 4893 4898 (2015)

PMID: 26077491 DOI: 10.1016/j.bmcl.2015.05.080

Abstact

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.

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