Abstract
RNA regulation is influenced by the dynamic changes in conformational accessibility on the transcript. Here we discuss the initial validation of a cell-free antisense probing method for structured RNAs, using the Tetrahymena group I intron as a control target. We observe changes in signal that qualitatively match prior traditional DMS footprinting experiments. Importantly, we have shown that application of this technique can elucidate new RNA information given its sensitivity for detecting rare intermediates that are not as readily observed by single-hit kinetics chemical probing techniques. Observing changes in RNA accessibility has broad applications in determining the effect that regulatory elements have on regional structures. We speculate that this method could be useful in quickly observing those interactions, along with other phenomena that influence RNA accessibility including RNA-RNA interactions and small molecules.
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