Functional Interaction Between the RNA Exosome and the Sirtuin Deacetylase Hst3 Maintains Transcriptional Homeostasis
Overview
Authors
Affiliations
Eukaryotic cells maintain an optimal level of mRNAs through unknown mechanisms that balance RNA synthesis and degradation. We found that inactivation of the RNA exosome leads to global reduction of nascent mRNA transcripts, and that this defect is accentuated by loss of deposition of histone variant H2A.Z. We identify the mRNA for the sirtuin deacetylase Hst3 as a key target for the RNA exosome that mediates communication between RNA degradation and transcription machineries. These findings reveal how the RNA exosome and H2A.Z function together to control a deacetylase, ensuring proper levels of transcription in response to changes in RNA degradation.
Homeostasis of mRNA concentrations through coupling transcription, export, and degradation.
Wang Q, Lin J iScience. 2024; 27(8):110531.
PMID: 39175768 PMC: 11338957. DOI: 10.1016/j.isci.2024.110531.
Baier A, Gioacchini N, Eek P, Leith E, Tan S, Peterson C Elife. 2024; 13.
PMID: 38809771 PMC: 11139478. DOI: 10.7554/eLife.94869.
The circular logic of mRNA homeostasis.
Bryll A, Peterson C Transcription. 2023; 14(1-2):18-26.
PMID: 36843061 PMC: 10353332. DOI: 10.1080/21541264.2023.2183684.
Enhanced gene regulation by cooperation between mRNA decay and gene transcription.
Garcia-Martinez J, Singh A, Medina D, Chavez S, Perez-Ortin J Biochim Biophys Acta Gene Regul Mech. 2023; 1866(2):194910.
PMID: 36731791 PMC: 10663100. DOI: 10.1016/j.bbagrm.2023.194910.
Beyond transcription: compelling open questions in plant RNA biology.
Manavella P, Godoy Herz M, Kornblihtt A, Sorenson R, Sieburth L, Nakaminami K Plant Cell. 2022; 35(6):1626-1653.
PMID: 36477566 PMC: 10226580. DOI: 10.1093/plcell/koac346.