Pol II Preferentially Regulates Ribosomal Protein Expression by Trapping Disassociated Subunits [RNA-seq]
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ABSTRACT: Pol II has been recognized as a passively regulated holoenzyme. However, whether Pol II plays specific regulatory roles remain unclear. Here, fractions containing disassociated RPB3 (dRPB3) were identified by size exclusion chromatography in various cells. Through a unique strategy, Specific Degradation of Disassociated Subunits (SDDS), we showed that dRPB3 functions as a regulatory component of Pol II to enable the preferential control of 3’ end processing of ribosomal protein genes. Machine learning analysis of large-scale genomic features revealed that the little elongation complex helps to determine the functional specificity of dRPB3. Mechanistically, dRPB3 facilitates CBC-PCF11 axis activity to increase the efficiency of 3’ end processing. Furthermore, the coordination between RPB3 and ribosomal proteins was widespread in diverse tissues and cancer cells. These findings suggest that Pol II gains specific regulatory functions by trapping disassociated subunits.
ORGANISM(S): Mus musculus
PROVIDER: GSE225448 | GEO | 2023/02/16
REPOSITORIES: GEO
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