2FDP image
Entry Detail
PDB ID:
2FDP
Keywords:
Title:
Crystal structure of beta-secretase complexed with an amino-ethylene inhibitor
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2005-12-14
Release Date:
2006-01-24
Method Details:
Experimental Method:
Resolution:
2.50 Å
R-Value Free:
0.25
R-Value Work:
0.22
R-Value Observed:
0.22
Space Group:
P 1 21 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Beta-secretase 1
Chain IDs:A, B, C
Chain Length:388
Number of Molecules:3
Biological Source:Homo sapiens
Ligand Molecules
Primary Citation
Aminoethylenes: a tetrahedral intermediate isostere yielding potent inhibitors of the aspartyl protease BACE-1.
J.Med.Chem. 49 839 842 (2006)
PMID: 16451048 DOI: 10.1021/jm0509142

Abstact

A series of novel beta-site amyloid precursor protein cleaving enzyme (BACE-1) inhibitors containing an aminoethylene (AE) tetrahedral intermediate isostere were synthesized and evaluated in comparison to corresponding hydroxyethylene (HE) compounds. Enzymatic inhibitory values were similar for both isosteres, as were structure-activity relationships with respect to stereochemical preference and substituent variation (P2/P3, P1, and P2'); however, the AE compounds were markedly more potent in a cell-based assay for reduction of beta-secretase activity. The incorporation of preferred P2/P3, P1, and P2' substituents into the AE pharmacophore yielded compound 7, which possessed enzymatic and cell assay IC(50)s of 26 nM and 180 nM, respectively. A three-dimensional crystal structure of 7 in complex with BACE-1 revealed that the amino group of the inhibitor core engages the catalytic aspartates in a manner analogous to hydroxyl groups in HE inhibitors. The AE isostere class represents a promising advance in the development of BACE-1 inhibitors.

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Primary Citation of related structures