Elucidating efflux inhibition and avoidance in Pseudomonas aeruginosa

Gervasoni, S. and Margiotta, E. and Bosin, A. and Vargiu, A.V. (2023) Elucidating efflux inhibition and avoidance in Pseudomonas aeruginosa. Il nuovo cimento C, 46 (4). pp. 1-4. ISSN 1826-9885

ncc12695.pdf - Published Version

Download (219kB) | Preview
Official URL: https://www.sif.it/riviste/sif/ncc/econtents/2023/...


Antibiotic resistance is a major threat to public health. Gramnegative pathogens, such as Pseudomonas aeruginosa, are of particular concern. One of the first bacterial defence mechanisms is the active export of drugs out of the cell, mainly mediated by resistance-nodulation-division (RND) efflux pumps. The major RND efflux pump of P. aeruginosa is MexAB-OprM, in which the inner membrane transporter MexB is responsible for the recognition and binding of compounds. Due to the difficulty of producing co-crystals,computational methods are crucial to gaining insights into the interactions between compounds and MexB. We exploited multi-copy molecular dynamics simulations to investigate the binding of peptidomimetics compounds to MexB. Based on microbiology studies, this series was shown to include efflux substrates, inhibitors, and avoiders. The detailed analysis of protein-ligand interactions (both direct and water-mediated) revealed characteristic patterns for each class of compounds, highlighting significant differences. Our results outline molecular-level information that could help the rational design of new inhibitors and new antibiotics less susceptible to the efflux mechanism.

Item Type: Article
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 08 Mar 2024 13:47
Last Modified: 08 Mar 2024 13:47
URI: http://eprints.bice.rm.cnr.it/id/eprint/22711

Actions (login required)

View Item View Item