ISDA

Entry Detail

PDB ID:

3O56

Keywords:

HYDROLASE/HYDROLASE INHIBITOR

Title:

Catalytic domain of human phosphodiesterase 4b2b in complex with a 5-heterocycle pyrazolopyridine inhibitor

Biological Source:

Source Organism:

Homo sapiens

Host Organism:

Spodoptera frugiperda

PDB Version:

Deposition Date:

2010-07-28

Release Date:

2011-08-03

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.42 Å

R-Value Free:

0.26

R-Value Work:

0.19

R-Value Observed:

0.19

Space Group:

I 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:cAMP-specific 3',5'-cyclic phosphodiesterase 4B
Mutations:S482A, S487A, S489A
Chain IDs:A
Chain Length:353
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:Q07343 Pfam ID:PF00233 EC:3.1.4.53

Ligand Molecules

ARS

GOL

ZG1

Primary Citation

Pyrazolopyridines as potent PDE4B inhibitors: 5-heterocycle SAR.

Mitchell, C.J, Ballantine, S.P, Coe, D.M, Cook, C.M, Delves, C.J, Dowle, M.D, Edlin, C.D, Hamblin, J.N, Holman, S, Johnson, M.R, Jones, P.S, Keeling, S.E, Kranz, M, Lindvall, M, Lucas, F.S, Neu, M, Solanke, Y.E, Somers, D.O, Trivedi, N.A, Wiseman, J.O.Show

Bioorg.Med.Chem.Lett. 20 5803 5806 (2010)

PMID: 20732811 DOI: 10.1016/j.bmcl.2010.07.136

Abstact

Following the discovery of 4-(substituted amino)-1-alkyl-pyrazolo[3,4-b]pyridine-5-carboxamides as potent and selective phosphodiesterase 4B inhibitors, [Hamblin, J. N.; Angell, T.; Ballentine, S., et al. Bioorg. Med. Chem. Lett.2008, 18, 4237] the SAR of the 5-position was investigated further. A range of substituted heterocycles showed good potencies against PDE4. Optimisation using X-ray crystallography and computational modelling led to the discovery of 16, with sub-nM inhibition of LPS-induced TNF-α production from isolated human peripheral blood mononuclear cells.

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Primary Citation of related structures