Identification and Biochemical Characterization of Pyrrolidinediones as Novel Inhibitors of the Bacterial Enzyme MurA.

ABSTRACT: To develop novel antibiotics, targeting the early steps of cell wall peptidoglycan biosynthesis seems to be a promising strategy that is still underutilized. MurA, the first enzyme in this pathway, is targeted by the clinically used irreversible inhibitor fosfomycin. However, mutations in its binding site can cause bacterial resistance. We herein report a series of novel reversible pyrrolidinedione-based MurA inhibitors that equally inhibit wild type (WT) MurA and the fosfomycin-resistant MurA C115D mutant, showing an additive effect with fosfomycin for the inhibition of WT MurA. For the most potent inhibitor 46 (IC₅₀ = 4.5 μM), the mode of inhibition was analyzed using native mass spectrometry and protein NMR spectroscopy. The compound class was nontoxic against human ce

SUBMITTER: Fathalla RK 

PROVIDER: S-EPMC9989942 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature