In silico screening for antibiotic escort molecules to overcome efflux.

Rahman, S.S., Simovic, I., Gibbons, S. and Zloh, M. (2011) In silico screening for antibiotic escort molecules to overcome efflux. Journal of Molecular Modeling, 17 (11). pp. 2863-2872. 10.1007/s00894-011-0978-7.

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DOI: 10.1007/s00894-011-0978-7

Abstract

Resistance to antibiotics is a growing problem worldwide and occurs in part due to the overexpression of efflux pumps responsible for the removal of antibiotics from bacterial cells. The current study examines complex formation between efflux pump substrates and escort molecules as a criterion for an in silico screening method for molecules that are able to potentiate antibiotic activities. Initially, the SUPERDRUG database was queried to select molecules that were similar to known multidrug resistance (MDR) modulators. Molecular interaction fields generated by GRID and the docking module GLUE were used to calculate the interaction energies between the selected molecules and the antibiotic norfloxacin. Ten compounds forming the most stable complexes with favourable changes to the norfloxacin molecular properties were tested for their potentiation ability by efflux pump modulation assays. Encouragingly, two molecules were proven to act as efflux pump modulators, and hence provide evidence that complex formation between a substrate and a drug can be used for in silico screening for novel escort molecules.

Item Type:Article
Uncontrolled Keywords:Efflux pumps; Escort molecules; In silico screening; MDR; Molecular interaction fields; Multidrug resistance
Departments, units and centres:Department of Pharmaceutics > Department of Pharmaceutics
ID Code:1841
Journal or Publication Title:Journal of Molecular Modeling
Deposited By:Library Staff
Deposited On:27 Feb 2011 19:17
Last Modified:23 Mar 2012 11:46

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