Abstract

Steady-state levels of cellular RNA are determined by both transcriptional rate and RNA half-life. Commonly used methods for transcriptional analysis are only capable of profiling total RNA and do not distinguish changes in synthesis and decay rates. Hence, a better understanding of the temporal dynamics of cellular response for a given condition at the transcriptional level requires techniques for the analysis of nascent transcripts. Here we describe a protocol that allows isolation of nascent transcripts with a copper-catalyzed azide-alkyne cycloaddition (CuAAC) also known as a click chemistry reaction.

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