El papel de las proteínas DELLA en el procesamiento alternativo de mensajeros
DELLA proteins, the master repressors of the gibberellin (GA) signaling pathway, are thought to regulate gene expression by mechanisms other than their interaction with bona fide transcription factors. In particular, current work in our lab shows that DELLA and their atypical interactors prefoldins...
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| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2018 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | español |
| OAI Identifier: | oai:riunet.upv.es:10251/97802 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/97802 |
| Access Level: | acceso abierto |
| Palabra clave: | DELLA Sm LSM Prefoldin Arabidopsis Alternative splicing Gibberellins Prefoldina Splicing alternativo BIOQUIMICA Y BIOLOGIA MOLECULAR Máster Universitario en Biotecnología Molecular y Celular de Plantas-Màster Universitari en Biotecnologia Molecular i Cel·lular de Plantes |
| Sumario: | DELLA proteins, the master repressors of the gibberellin (GA) signaling pathway, are thought to regulate gene expression by mechanisms other than their interaction with bona fide transcription factors. In particular, current work in our lab shows that DELLA and their atypical interactors prefoldins are able to interact with and regulate a number of proteins that are part of the basal transcriptional machinery, regulating the RNA polymerase II activity. Among the novel interactors being studied are proteins involved in mRNA splicing. In this TFM, we have investigated the participation of DELLA and prefoldin in alternative splicing by analyzing protein-protein interaction between these proteins and Sm/LSm, which form heteroheptameric complexes and are an essential part of the spliceosome. We have also advanced in obtaining resources to test genetic interactions between della and sm/lsm mutants. In addition, some alternative splicing events affected by DELLA activity identified in a transcriptomic analysis by RNA-seq, have been validated by semiquantitative RT-PCR. Finally, it has been shown that GA signaling alters the Sm and LSm protein levels. |
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