RNA 3’end tailing safeguards cells against products of pervasive transcription termination
Guifen Wu,
Jérôme O. Rouvière,
Manfred Schmid
et al.
Abstract:Premature transcription termination yields a wealth of unadenylated (pA-) RNA. Although this can be targeted for degradation by the Nuclear EXosome Targeting (NEXT) complex, possible back-up pathways remain poorly understood. Here, we find RNA 3′ end uridylation and adenylation upon NEXT inactivation. U-tailed RNAs are generally short and modified by the cytoplasmic tailing enzymes, TUT4/7, following their PHAX-dependent nuclear export and prior to their degradation by the cytoplasmic exosome or the exoribonuc… Show more
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