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Keywords = isepamicin analogs

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11 pages, 1063 KB  
Article
Development of 6′-N-Acylated Isepamicin Analogs with Improved Antibacterial Activity against Isepamicin-Resistant Pathogens
by Yeon Hee Ban, Myoung Chong Song, Hee Jin Kim, Heejeong Lee, Jae Bok Wi, Je Won Park, Dong Gun Lee and Yeo Joon Yoon
Biomolecules 2020, 10(6), 893; https://doi.org/10.3390/biom10060893 - 11 Jun 2020
Cited by 4 | Viewed by 3370
Abstract
The development of new aminoglycoside (AG) antibiotics has been required to overcome the resistance mechanism of AG-modifying enzymes (AMEs) of AG-resistant pathogens. The AG acetyltransferase, AAC(6′)-APH(2″), one of the most typical AMEs, exhibiting substrate promiscuity towards a variety of AGs and acyl-CoAs, was [...] Read more.
The development of new aminoglycoside (AG) antibiotics has been required to overcome the resistance mechanism of AG-modifying enzymes (AMEs) of AG-resistant pathogens. The AG acetyltransferase, AAC(6′)-APH(2″), one of the most typical AMEs, exhibiting substrate promiscuity towards a variety of AGs and acyl-CoAs, was employed to enzymatically synthesize new 6′-N-acylated isepamicin (ISP) analogs, 6′-N-acetyl/-propionyl/-malonyl ISPs. They were all active against the ISP-resistant Gram-negative bacteria tested, and the 6′-N-acetyl ISP displayed reduced toxicity compared to ISP in vitro. This study demonstrated the importance of the modification of the 6′-amino group in circumventing AG-resistance and the potential of regioselective enzymatic modification of AG scaffolds for the development of more robust AG antibiotics. Full article
(This article belongs to the Special Issue Recent Advance of Actinomycetes)
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