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CRL3ARMC5 ubiquitin ligase and Integrator phosphatase form parallel mechanisms to control early stages of RNA Pol II transcription
Cacioppo, Gillis, Shlamovitz, Zeller, et al. show that CRL3ARMC5 ubiquitylates RNA Pol II at early stages of transcription as part of a major homeostatic RNA Pol II turnover mechanism. CRL3ARMC5 and the Integrator phosphatase act as complementary pathways, monitoring the quantity and quality of RNA Pol II complexes before they are licensed into elongation.