RNA degradation in mammalian cells is performed by multiple enzymes and cofactors making it difficult to identify the specific impact of each of them separately. The auxin-inducible degron system enables direct depletion of a protein of interest limiting the time of depletion and thus reducing secondary effects due to cell adaptation. In this chapter, using XRN1 as an example of cytoplasmic RNA decay enzyme, we describe a combination of methods to introduce the auxin-inducible degron by CRISPR-Cas9, together with downstream analyses of RNA levels after protein depletion.
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