8R1B image
Entry Detail
PDB ID:
8R1B
Keywords:
Title:
Crystal structure of recombinant LasB from Pseudomonas aeruginosa PAO1 in complex with 6466
Biological Source:
Host Organism:
PDB Version:
Deposition Date:
2023-11-01
Release Date:
2024-10-16
Method Details:
Experimental Method:
Resolution:
1.31 Å
R-Value Free:
0.16
R-Value Work:
0.14
R-Value Observed:
0.14
Space Group:
P 1 21 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Pro-elastase
Chain IDs:A
Chain Length:514
Number of Molecules:1
Biological Source:Pseudomonas aeruginosa PAO1
Primary Citation
Dipeptidic Phosphonates: Potent Inhibitors of Pseudomonas aeruginosa Elastase B Showing Efficacy in a Murine Keratitis Model.
Adv Sci 12 e2411807 e2411807 (2025)
PMID: 39973061 DOI: 10.1002/advs.202411807

Abstact

The ubiquitous opportunistic pathogen Pseudomonas aeruginosa is responsible for severe infections and notoriously known for acquiring antimicrobial resistance. Inhibiting the bacterium's extracellular elastase, LasB - a zinc-dependent protease - presents a promising strategy to mitigate its virulence. Within this medicinal chemistry-driven hit-to-lead optimization campaign, a new series of highly potent dipeptidic phosphonates is designed and synthesized following a structure-based drug-discovery approach. In vitro and in vivo evaluation reveal beneficial pharmacokinetic profiles, excellent selectivity over human off-targets and good tolerability in murine toxicity studies. Ultimately, the scaffold presented herein demonstrates promising in vivo efficacy in a murine Pseudomonas aeruginosa keratitis model in combination with the antibiotic meropenem.

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