1QXW image
Deposition Date 2003-09-09
Release Date 2004-03-16
Last Version Date 2024-02-14
Entry Detail
PDB ID:
1QXW
Keywords:
Title:
Crystal structure of Staphyloccocus aureus in complex with an aminoketone inhibitor 54135.
Biological Source:
Source Organism:
Host Organism:
Method Details:
Experimental Method:
Resolution:
1.67 Å
R-Value Free:
0.18
R-Value Work:
0.15
R-Value Observed:
0.15
Space Group:
P 1 21 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:methionyl aminopeptidase
Chain IDs:A
Chain Length:252
Number of Molecules:1
Biological Source:Staphylococcus aureus
Primary Citation
Crystal structures of staphylococcusaureus methionine aminopeptidase complexed with keto heterocycle and aminoketone inhibitors reveal the formation of a tetrahedral intermediate.
J.Med.Chem. 47 1325 1328 (2004)
PMID: 14998322 DOI: 10.1021/jm034188j

Abstact

High-resolution crystal structures of Staphylococcus aureus methionine aminopeptidase I in complex with various keto heterocycles and aminoketones were determined, and the intermolecular ligand interactions with the enzyme are reported. The compounds are effective inhibitors of the S. aureus enzyme because of the formation of an uncleavable tetrahedral intermediate upon binding. The electron densities unequivocally show the enzyme-catalyzed transition-state analogue mimicking that for amide bond hydrolysis of substrates.

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