ISDA

Entry Detail

PDB ID:

5UP0

Keywords:

Title:

Crystal structure of human PDE1B catalytic domain in complex with inhibitor 3 (6-(4-chlorobenzyl)-8,9,10,11-tetrahydrobenzo[4,5]thieno[3,2-e][1,2,4]triazolo[1,5-c]pyrimidin-5(6H)-one)

Biological Source:

Source Organism:

Homo sapiens

Host Organism:

Escherichia coli

PDB Version:

Deposition Date:

2017-02-01

Release Date:

2017-04-26

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.04 Å

R-Value Free:

0.22

R-Value Work:

0.19

R-Value Observed:

0.19

Space Group:

P 43 21 2

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Calcium/calmodulin-dependent 3',5'-cyclic nucleotide phosphodiesterase 1B
Chain IDs:A
Chain Length:361
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:Q01064 Pfam ID:PF00233 EC:3.1.4.17

Ligand Molecules

8HP

Primary Citation

Discovery of Selective Phosphodiesterase 1 Inhibitors with Memory Enhancing Properties.

Dyck, B, Branstetter, B, Gharbaoui, T, Hudson, A.R, Breitenbucher, J.G, Gomez, L, Botrous, I, Marrone, T, Barido, R, Allerston, C.K, Cedervall, E.P, Xu, R, Sridhar, V, Barker, R, Aertgeerts, K, Schmelzer, K, Neul, D, Lee, D, Massari, M.E, Andersen, C.B, Sebring, K, Zhou, X, Petroski, R, Limberis, J, Augustin, M, Chun, L.E, Edwards, T.E, Peters, M, Tabatabaei, A.Show

J. Med. Chem. 60 3472 3483 (2017)

PMID: 28406621 DOI: 10.1021/acs.jmedchem.7b00302

Abstact

A series of potent thienotriazolopyrimidinone-based PDE1 inhibitors was discovered. X-ray crystal structures of example compounds from this series in complex with the catalytic domain of PDE1B and PDE10A were determined, allowing optimization of PDE1B potency and PDE selectivity. Reduction of hERG affinity led to greater than a 3000-fold selectivity for PDE1B over hERG. 6-(4-Methoxybenzyl)-9-((tetrahydro-2H-pyran-4-yl)methyl)-8,9,10,11-tetrahydropyrido[4',3':4,5]thieno[3,2-e][1,2,4]triazolo[1,5-c]pyrimidin-5(6H)-one was identified as an orally bioavailable and brain penetrating PDE1B enzyme inhibitor with potent memory-enhancing effects in a rat model of object recognition memory.

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