4tpm

From Proteopedia

Crystal structure of 2-(3-alkoxy-1-azetidinyl) quinolines as PDE10A Inhibitors

PDB ID 4tpm

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Structural highlights

4tpm is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.77Å
Ligands:	, , ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

PDE10_HUMAN Plays a role in signal transduction by regulating the intracellular concentration of cyclic nucleotides. Can hydrolyze both cAMP and cGMP, but has higher affinity for cAMP and is more efficient with cAMP as substrate.^[1]

Publication Abstract from PubMed

We report the discovery of a novel series of 2-(3-alkoxy-1-azetidinyl) quinolines as potent and selective PDE10A inhibitors. Structure-activity studies improved the solubility (pH 7.4) and maintained high PDE10A activity compared to initial lead compound 3, with select compounds demonstrating good oral bioavailability. X-ray crystallographic studies revealed two distinct binding modes to the catalytic site of the PDE10A enzyme. An ex vivo receptor occupancy assay in rats demonstrated that this series of compounds covered the target within the striatum.

Synthesis and preliminary biological evaluation of potent and selective 2-(3-alkoxy-1-azetidinyl) quinolines as novel PDE10A inhibitors with improved solubility.,Rzasa RM, Frohn MJ, Andrews KL, Chmait S, Chen N, Clarine JG, Davis C, Eastwood HA, Horne DB, Hu E, Jones AD, Kaller MR, Kunz RK, Miller S, Monenschein H, Nguyen T, Pickrell AJ, Porter A, Reichelt A, Zhao X, Treanor JJ, Allen JR Bioorg Med Chem. 2014 Oct 22;22(23):6570-6585. doi: 10.1016/j.bmc.2014.10.013. PMID:25456383^[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Wang H, Liu Y, Hou J, Zheng M, Robinson H, Ke H. Structural insight into substrate specificity of phosphodiesterase 10. Proc Natl Acad Sci U S A. 2007 Apr 3;104(14):5782-7. Epub 2007 Mar 26. PMID:17389385
↑ Rzasa RM, Frohn MJ, Andrews KL, Chmait S, Chen N, Clarine JG, Davis C, Eastwood HA, Horne DB, Hu E, Jones AD, Kaller MR, Kunz RK, Miller S, Monenschein H, Nguyen T, Pickrell AJ, Porter A, Reichelt A, Zhao X, Treanor JJ, Allen JR. Synthesis and preliminary biological evaluation of potent and selective 2-(3-alkoxy-1-azetidinyl) quinolines as novel PDE10A inhibitors with improved solubility. Bioorg Med Chem. 2014 Oct 22;22(23):6570-6585. doi: 10.1016/j.bmc.2014.10.013. PMID:25456383 doi:http://dx.doi.org/10.1016/j.bmc.2014.10.013