2026-07-18T13:59:04Zhttps://docta.ucm.es/rest/oai/request
oai:docta.ucm.es:20.500.14352/1044982024-05-29T00:08:40Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense author Pulido Sanz, Verónica author Rodríguez Peña, José Manuel author Alonso, Graciela author Sanz Santamaría, Ana Belén author Arroyo Nombela, Francisco Javier author García Sánchez, Raúl editor Igor Stagljar 2024-05-28T12:37:56Z 2024-05-28T12:37:56Z 2024-05-15 10.1016/j.jmb.2024.168570 https://hdl.handle.net/20.500.14352/104498 https://www.sciencedirect.com/science/article/pii/S0022283624001657?via%3Dihub 38604529 Cellular mRNA levels, particularly under stress conditions, can be finely regulated by the coordinated action of transcription and degradation processes. Elements of the 5′-3′ mRNA degradation pathway, functionally associated with the exonuclease Xrn1, can bind to nuclear chromatin and modulate gene transcription. Within this group are the so-called decapping activators, including Pat1, Dhh1, and Lsm1. In this work, we have investigated the role of Pat1 in the yeast adaptive transcriptional response to cell wall stress. Thus, we demonstrated that in the absence of Pat1, the transcriptional induction of genes regulated by the Cell Wall Integrity MAPK pathway was significantly affected, with no effect on the stability of these transcripts. Furthermore, under cell wall stress conditions, Pat1 is recruited to Cell Wall Integrity-responsive genes in parallel with the RNA Pol II complex, participating both in pre-initiation complex assembly and transcriptional elongation. Indeed, strains lacking Pat1 showed lower recruitment of the transcription factor Rlm1, less histone H3 displacement at Cell Wall Integrity gene promoters, and impaired recruitment and progression of RNA Pol II. Moreover, Pat1 and the MAPK Slt2 occupied the coding regions interdependently. Our results support the idea that Pat1 and presumably other decay factors behave as transcriptional regulators of Cell Wall Integrity-responsive genes under cell wall stress conditions. eng Attribution-NonCommercial-NoDerivatives 4.0 International mRNA decapping activator Pat1 Is required for efficient yeast adaptive transcriptional responses via the cell wall integrity MAPK pathway journal article 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URL https://docta.ucm.es/bitstreams/f5188fff-1f0f-48a3-aa8e-01a8d2e22c63/download File MD5 70d1d1914a681620fbef150d27fd8489 3613401 application/pdf Pulido et al.., 2024.pdf