Role of histone modifications in transcription regulation upon environmental stress in eukaryotes
Epigenetic modification serves as a crucial mechanism in regulating gene expression and facilitating cellular adaptation to environmental stress. This study aimed to identify histone residues and their associated post-translational modifications (PTMs) that contribute to stress response and adaptati...
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| Tipo de recurso: | tesis doctoral |
| Estado: | Versión publicada |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | CBUC, CESCA |
| Repositorio: | TDR. Tesis Doctorales en Red |
| OAI Identifier: | oai:www.tdx.cat:10803/690850 |
| Acceso en línea: | http://hdl.handle.net/10803/690850 |
| Access Level: | acceso abierto |
| Palabra clave: | Histone post-translational modification Transcription regulation Environmental stress Stress adaptation Saccharomyces cerevisiae Modificación postraduccional de histonas Regulación de la transcripción Estrés ambiental Adaptación al estrés 577 |
| Sumario: | Epigenetic modification serves as a crucial mechanism in regulating gene expression and facilitating cellular adaptation to environmental stress. This study aimed to identify histone residues and their associated post-translational modifications (PTMs) that contribute to stress response and adaptation in the eukaryotic model organism Saccharomyces cerevisiae. A comprehensive set of histone mutants was analyzed to understand the transcriptional and phenotypic effects of potential histone PTMs. Through rigorous selection criteria and extensive experimental validation, we refined our list of candidate histone residues for further study. Histone H3 lysine 64 (H3-K64) emerged as a key player, exhibiting significant transcriptional effects in a PTM-dependent manner. We postulated the PTM involved in this process and investigated the potential regulatory mechanisms of those PTMs involved in this process. Our findings suggest a potential association of the stress response modulating transcription factor, Msn2, and the Set domain-containing methyltransferase, Set1, in the regulation of H3-K64 methylation. |
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