3DS6 image
Entry Detail
PDB ID:
3DS6
Keywords:
Title:
P38 complex with a phthalazine inhibitor
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2008-07-11
Release Date:
2008-10-07
Method Details:
Experimental Method:
Resolution:
2.90 Å
R-Value Free:
0.31
R-Value Work:
0.22
Space Group:
P 21 21 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Mitogen-activated protein kinase 14
Mutations:remnants of his tag at Nterminal(GSHMLE)
Chain IDs:A, B, C, D
Chain Length:366
Number of Molecules:4
Biological Source:Homo sapiens
Ligand Molecules
Primary Citation
Discovery of highly selective and potent p38 inhibitors based on a phthalazine scaffold.
J.Med.Chem. 51 6271 6279 (2008)
PMID: 18817365 DOI: 10.1021/jm8005417

Abstact

Investigations into the structure-activity relationships (SAR) of a series of phthalazine-based inhibitors of p38 are described. These efforts originated from quinazoline 1 and through rational design led to the development of a series of orally bioavailable, potent, and selective inhibitors. Kinase selectivity was achieved by exploiting a collection of interactions with p38alpha including close contact to Ala157, occupation of the hydrophobic gatekeeper pocket, and a residue flip with Gly110. Substitutions on the phthalazine influenced the pharmacokinetic properties, of which compound 16 displayed the most desirable profile. Oral dosing (0.03 mg/kg) of 16 in rats 1 h prior to LPS challenge gave a >50% decrease in TNFalpha production.

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Primary Citation of related structures