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Pol II Preferentially Regulates Ribosomal Protein Expression by Trapping Disassociated Subunits

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Mus musculus Homo sapiens

PROVIDER: GSE225455 | GEO | 2023/02/16

REPOSITORIES: GEO

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Pol II Preferentially Regulates Ribosomal Protein Expression by Trapping Disassociated Subunits [ChIP-seq]

Project description: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 demonstrated that dRPB3 functions as a regulatory component of Pol II to enable the preferential control of 3’ end processing of ribosomal protein genes directly through N-terminal domain of RPB3. Machine learning analysis of large-scale genomic features revealed that the little elongation complex helps to specialize the functions of dRPB3. Mechanistically, dRPB3 facilitates CBC-PCF11 axis activity to increase the efficiency of 3’ end processing. Furthermore, RPB3 is dynamically regulated during development and diseases. These findings suggest that Pol II gains specific regulatory functions by trapping disassociated subunits.

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Pol II Preferentially Regulates Ribosomal Protein Expression by Trapping Disassociated Subunits [ChAR-seq]

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Pol II Preferentially Regulates Ribosomal Protein Expression by Trapping Disassociated Subunits [RNA-seq]

Project description: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.

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Pol II preferentially regulates ribosomal protein expression by trapping disassociated subunits

Project description: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 demonstrated that dRPB3 functions as a regulatory component of Pol II to enable the preferential control of 3’ end processing of ribosomal protein genes directly through its N-terminal domain. Machine learning analysis of large-scale genomic features revealed that the little elongation complex helps to specialize the functions of dRPB3. Mechanistically, dRPB3 facilitates CBC-PCF11 axis activity to increase the efficiency of 3’ end processing. Furthermore, RPB3 is dynamically regulated during development and diseases. These findings suggest that Pol II gains specific regulatory functions by trapping disassociated subunits.

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Pol II Preferentially Regulates Ribosomal Protein Expression by Trapping Disassociated Subunits

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Pol II Preferentially Regulates Ribosomal Protein Expression by Trapping Disassociated Subunits [ChIP-seq]

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