期刊
CHEMMEDCHEM
卷 16, 期 21, 页码 3368-3373出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cmdc.202100435
关键词
click chemistry; density functional theory; macrolide; solithromycin; pi-stacking
资金
- NIH [GM126221]
- NSF [CHE-1665407]
- National Science Foundation Graduate Research Fellowship Program [DEG-12262]
- Pennsylvania Department of Health
The urgent need for new antibiotics to combat antibiotic resistance has led to the identification of solithromycin as a promising candidate. Research has shown that the molecular interactions between solithromycin analogs and ribosomal subunits involve pi-stacking and hydrogen bonding mechanisms.
There is an urgent need for new antibiotics to mitigate the existential threat posed by antibiotic resistance. Within the ketolide class, solithromycin has emerged as one of the most promising candidates for further development. Crystallographic studies of bacterial ribosomes and ribosomal subunits complexed with solithromycin have shed light on the nature of molecular interactions (pi-stacking and H-bonding) between from the biaryl side-chain of the drug and key residues in the 50S ribosomal subunit. We have designed and synthesized a library of solithromycin analogs to study their structure-activity relationships (SAR) in tandem with new computational studies. The biological activity of each analog was evaluated in terms of ribosomal affinity (K-d determined by fluorescence polarization), as well as minimum inhibitory concentration assays (MICs). Density functional theory (DFT) studies of a simple binding site model identify key H-bonding interactions that modulate the potency of solithromycin analogs.
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