4ZQT image
Deposition Date 2015-05-11
Release Date 2015-10-07
Last Version Date 2023-09-27
Entry Detail
PDB ID:
4ZQT
Title:
Crystal structure of PfA-M1 with virtual ligand inhibitor
Biological Source:
Source Organism:
Host Organism:
Method Details:
Experimental Method:
Resolution:
1.98 Å
R-Value Free:
0.20
R-Value Work:
0.15
R-Value Observed:
0.16
Space Group:
P 21 21 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:M1 family aminopeptidase
Gene (Uniprot):M1AAP
Chain IDs:A
Chain Length:889
Number of Molecules:1
Biological Source:Plasmodium falciparum 3D7
Primary Citation
Identification and Validation of a Potent Dual Inhibitor of the P. falciparum M1 and M17 Aminopeptidases Using Virtual Screening.
Plos One 10 e0138957 e0138957 (2015)
PMID: 26406322 DOI: 10.1371/journal.pone.0138957

Abstact

The Plasmodium falciparum PfA-M1 and PfA-M17 metalloaminopeptidases are validated drug targets for the discovery of antimalarial agents. In order to identify dual inhibitors of both proteins, we developed a hierarchical virtual screening approach, followed by in vitro evaluation of the highest scoring hits. Starting from the ZINC database of purchasable compounds, sequential 3D-pharmacophore and molecular docking steps were applied to filter the virtual 'hits'. At the end of virtual screening, 12 compounds were chosen and tested against the in vitro aminopeptidase activity of both PfA-M1 and PfA-M17. Two molecules showed significant inhibitory activity (low micromolar/nanomolar range) against both proteins. Finally, the crystal structure of the most potent compound in complex with both PfA-M1 and PfA-M17 was solved, revealing the binding mode and validating our computational approach.

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