- Title
- Bacterial transcription inhibitor of RNA polymerase holoenzyme formation by structure-based drug design: from in silico screening to validation
- Creator
- Ma, Cong; Yang, Xiao; Lewis, Peter J.
- Relation
- ACS Infectious Diseases Vol. 2, Issue 1, p. 39-46
- Publisher Link
- http://dx.doi.org/10.1021/acsinfecdis.5b00058
- Publisher
- American Chemical Society
- Resource Type
- journal article
- Date
- 2016
- Description
- Bacterial transcription is a proven target for antibacterial research. However, most of the known inhibitors targeting transcription are from natural extracts or are hits from screens where the binding site remains unidentified. Using an RNA polymerase holoenzyme homology structure from the model Gram-positive organism Bacillus subtilis, we created a pharmacophore model and used it for in silico screening of a publicly available library for compounds able to inhibit holoenzyme formation. The hits demonstrated specific affinity to bacterial RNA polymerase and excellent activity using in vitro assays and showed no binding to the equivalent structure from human RNA polymerase II. The target specificity in live cells and antibacterial activity was demonstrated in microscopy and growth inhibition experiments. This is the first example of targeted inhibitor development for a bacterial RNA polymerase, outlining a complete discovery process from virtual screening to biochemical validation. This approach could serve as an appropriate platform for the future identification of inhibitors of bacterial transcription.
- Subject
- antibiotic discovery; bacteria; in silico screening; protein−protein interaction; target validation; transcription
- Identifier
- http://hdl.handle.net/1959.13/1317821
- Identifier
- uon:23516
- Identifier
- ISSN:2373-8227
- Rights
- This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Infectious Diseases, copyright ©American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/acsinfecdis.5b00058
- Language
- eng
- Full Text
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