Gene expression regulation in fission yeast : from splicing to MBF-dependent transcription
Schizosaccharomyces pombe initiates sexual development under nitrogen starvation, changing the transcription patterns of many genes to allow sexual differentiation. MBF transcription factor recognize specific sequences present in genes required for mitotic and meiotic S phase and activates their tra...
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| Tipo de recurso: | tesis doctoral |
| Estado: | Versión publicada |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | CBUC, CESCA |
| Repositorio: | TDR. Tesis Doctorales en Red |
| OAI Identifier: | oai:www.tdx.cat:10803/674990 |
| Acceso en línea: | http://hdl.handle.net/10803/674990 |
| Access Level: | acceso abierto |
| Palabra clave: | Splicing Meiosis Transcription Transcripción Cell cycle Ciclo celular 575 |
| Sumario: | Schizosaccharomyces pombe initiates sexual development under nitrogen starvation, changing the transcription patterns of many genes to allow sexual differentiation. MBF transcription factor recognize specific sequences present in genes required for mitotic and meiotic S phase and activates their transcription through binding to their promoters. Genes involved in recombination (rec genes) are also activated by MBF, but in a different and independent wave of transcription. Res2 plays an important role in the transcription of this new wave, as higher levels of this protein are required to initiate recombination. Another form of gene expression regulation takes place through splicing. Spliceosome is in charge of these transesterification reactions and requires a correct recognition of intron-exon boundaries to achieve proper splicing efficiency. Auxiliary factors are essential for a correct splicing of introns with degenerated sequences, as Prp2, being the last nucleotide of the upstream exon what determines the dependency of an intron on Prp2. |
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