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- W2020256109 abstract "We demonstrate that binding of mixtures of aminoglycosides can be measured simultaneously against multiple RNA targets of identical length and similar (or identical) molecular weight. Addition of a neutral mass tag to one of the RNA targets shifts the detected peaks to a higher mass/charge ratio, where complexes with small molecules can be identified unambiguously. An appropriately placed neutral mass tag does not alter RNA--ligand binding. The utility of this strategy is demonstrated with model RNAs corresponding to the decoding region of the prokaryotic and eukaryotic rRNAs and a mixture of five aminoglycosides. Complexes are observed between the aminoglycoside library and the prokaryotic rRNA model, while no aminoglycoside was observed to bind to the mass-tagged eukaryotic rRNA model. The differential binding data is consistent with the eukaryotic A-site rRNA having a different conformation compared with the prokaryotic A-site that prevents entry and binding of neomycin-class aminoglycosides. Mass spectrometric analysis of neutral mass-tagged macromolecular targets represents a new high-throughput screening paradigm in which the interaction of multiple targets against a collection of small molecules can be evaluated in parallel." @default.
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- W2020256109 title "Multiplexed Screening of Neutral Mass-Tagged RNA Targets against Ligand Libraries with Electrospray Ionization FTICR MS: A Paradigm for High-Throughput Affinity Screening" @default.
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- W2020256109 doi "https://doi.org/10.1021/ac990262n" @default.
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