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Artificial RNA Polymerase II Elongation Complexes for Dissecting Co-transcriptional RNA Processing Events

Artificial RNA Polymerase II Elongation Complexes for Dissecting Co-transcriptional RNA Processing Events

Published on: May 13, 2019

Coordinated Control of rRNA Processing by RNA Polymerase I.

Catherine E Scull¹, David A Schneider¹

¹Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Birmingham, AL 35294, USA.

Trends in Genetics : TIG

|July 31, 2019

Summary

Ribosomal RNA processing is tightly linked to RNA polymerase I transcription elongation. Understanding this connection reveals how cells manage rRNA production and respond to stress.

Area of Science:

Molecular Biology
Cell Biology
Biochemistry

Background:

Ribosomal RNA (rRNA) undergoes co- and post-transcriptional processing to form functional ribosomes.
This processing is modulated by covalent modifications of RNA polymerase I (Pol I) and cofactor interactions.
Pol I activity influences rRNA processing, impacting cellular signaling and stress responses.

Purpose of the Study:

To review the intricate relationship between transcription elongation and rRNA processing.
To highlight the dynamic regulation of rRNA synthesis and maturation.
To explore the implications of altered Pol I transcription rates on cellular events.

Main Methods:

Literature review of studies on rRNA processing and Pol I transcription.
Analysis of regulatory mechanisms involving Pol I modifications and cofactors.
Examination of species-specific organization of rRNA processing during elongation.

Main Results:

Transcription elongation rate by Pol I directly impacts nascent rRNA processing.
Changes in Pol I transcription lead to alternative rRNA processing pathways.
Robust organization of rRNA processing events during transcription elongation is conserved across species.

Conclusions:

The interplay between transcription elongation and rRNA processing is crucial for ribosome biogenesis.
Understanding this relationship provides insights into cellular stress responses and signaling.
Further research is needed to fully elucidate the complex regulatory network.

Keywords:

RNA polymerase I RNA processing ribosome transcription elongation

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