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Título: | Putative histidine kinase inhibitors with antibacterial effect against multi-drug resistant clinical isolates identified by in vitro and in silico screens |
Autor: | Velikova, Nadya CSIC ORCID; Fulle, Simone; Sousa Manso, Ana; Mechkarska, Milena; Finn, Paul; Conlon, J. Michael; Rinaldo Oggioni, Marco; Wells, Jerry M.; Marina, Alberto CSIC ORCID | Fecha de publicación: | 13-may-2016 | Editor: | Nature Publishing Group | Citación: | Scientific Reports 6:26085 (2016) | Resumen: | Novel antibacterials are urgently needed to address the growing problem of bacterial resistance to conventional antibiotics. Two-component systems (TCS) are widely used by bacteria to regulate gene expression in response to various environmental stimuli and physiological stress and have been previously proposed as promising antibacterial targets. TCS consist of a sensor histidine kinase (HK) and an effector response regulator. The HK component contains a highly conserved ATP-binding site that is considered to be a promising target for broad-spectrum antibacterial drugs. Here, we describe the identification of putative HK autophosphorylation inhibitors following two independent experimental approaches: in vitro fragment-based screen via differential scanning fluorimetry and in silico structure-based screening, each followed up by the exploration of analogue compounds as identified by ligand-based similarity searches. Nine of the tested compounds showed antibacterial effect against multi-drug resistant clinical isolates of bacterial pathogens and include three novel scaffolds, which have not been explored so far in other antibacterial compounds. Overall, putative HK autophosphorylation inhibitors were found that together provide a promising starting point for further optimization as antibacterials. | Descripción: | 16 páginas, 6 figuras. Contiene material suplementario accesible online | Versión del editor: | http://dx.doi.org/10.1038/srep26085 | URI: | http://hdl.handle.net/10261/132721 | DOI: | 10.1038/srep26085 | E-ISSN: | 2045-2322 |
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2016 Sci Rep 006-26085.pdf | Artículo principal | 2,21 MB | Adobe PDF | Visualizar/Abrir |
2016 Sci Rep 006-26085-s1.doc | Material Suplementario | 1,01 MB | Microsoft Word | Visualizar/Abrir |
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