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Exploring the interaction of N-(benzothiazol-2-yl)pyrrolamide DNA gyrase inhibitors with the GyrB ATP-binding site lipophilic floor : a medicinal chemistry and QTAIM studyZidar, Nace ...N-(Benzothiazole-2-yl)pyrrolamide DNA gyrase inhibitors with benzyl or phenethyl substituents attached to position 3 of the benzothiazole ring or to the carboxamide nitrogen atom were prepared and ... studied for their inhibition of Escherichia coli DNA gyrase by supercoiling assay. Compared to inhibitors bearing the substituents at position 4 of the benzothiazole ring, the inhibition was attenuated by moving the substituent to position 3 and further to the carboxamide nitrogen atom. A co-crystal structure of (Z)-3-benzyl-2-((4,5-dibromo-1H-pyrrole-2-carbonyl)imino)-2,3-dihydrobenzo[d]-thiazole-6-carboxylic acid (I) in complex with E. coli GyrB24 (ATPase subdomain) was solved, revealing the binding mode of this type of inhibitor to the ATP-binding pocket of the E. coli GyrB subunit. The key binding interactions were identified and their contribution to binding was rationalised by quantum theory of atoms in molecules (QTAIM) analysis. Our study shows that the benzyl or phenethyl substituents bound to the benzothiazole core interact with the lipophilic floor of the active site, which consists mainly of residues Gly101, Gly102, Lys103 and Ser108. Compounds with substituents at position 3 of the benzothiazole core were up to two orders of magnitude more effective than compounds with substituents at the carboxamide nitrogen. In addition, the 6-oxalylamino compounds were more potent inhibitors of E. coli DNA gyrase than the corresponding 6-acetamido analogues.Vir: Bioorganic & Medicinal Chemistry. - ISSN 0968-0896 (Vol. 109, art. 117798, 2024, 16 str.)Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasleLeto - 2024Jezik - angleškiCOBISS.SI-ID - 199171075
Avtor
Zidar, Nace |
Cotman, Andrej Emanuel |
Sinnige, Wessel |
Benek, Ondřej |
Barančokova, Michaela |
Zega, Anamarija |
Peterlin-Mašič, Lucija |
Tomašič, Tihomir |
Ilaš, Janez |
Kikelj, Danijel
Teme
Farmacevtska kemija |
antibacterial agent |
DNA gyrase |
ATP-binding site |
N-(benzothiazol-2-yl)pyrrolamide |
inhibitor |
QTAIM analysis
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Zidar, Nace | 28905 |
Cotman, Andrej Emanuel | 37459 |
Sinnige, Wessel | ![]() |
Benek, Ondřej | ![]() |
Barančokova, Michaela | 39784 |
Zega, Anamarija | 18633 |
Peterlin-Mašič, Lucija | 19317 |
Tomašič, Tihomir | 28334 |
Ilaš, Janez | 24400 |
Kikelj, Danijel | 01463 |
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