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Título: | The Meiosis-Specific Crs1 Cyclin Is Required for Efficient S-Phase Progression and Stable Nuclear Architecture |
Autor: | Bustamante-Jaramillo, Luisa CSIC; Ramos Gangas, Celia CSIC ORCID; Martín-Castellanos, Cristina CSIC ORCID | Palabras clave: | Cyclins CDK meiosis chromosome architecture fission yeast |
Fecha de publicación: | 22-may-2021 | Editor: | Multidisciplinary Digital Publishing Institute | Citación: | International Journal of Molecular Sciences 22(11): 5483 (2021) | Resumen: | Cyclins and CDKs (Cyclin Dependent Kinases) are key players in the biology of eukaryotic cells, representing hubs for the orchestration of physiological conditions with cell cycle progression. Furthermore, as in the case of meiosis, cyclins and CDKs have acquired novel functions unrelated to this primal role in driving the division cycle. Meiosis is a specialized developmental program that ensures proper propagation of the genetic information to the next generation by the production of gametes with accurate chromosome content, and meiosis-specific cyclins are widespread in evolution. We have explored the diversification of CDK functions studying the meiosis-specific Crs1 cyclin in fission yeast. In addition to the reported role in DSB (Double Strand Break) formation, this cyclin is required for meiotic S-phase progression, a canonical role, and to maintain the architecture of the meiotic chromosomes. Crs1 localizes at the SPB (Spindle Pole Body) and is required to stabilize the cluster of telomeres at this location (bouquet configuration), as well as for normal SPB motion. In addition, Crs1 exhibits CDK(Cdc2)-dependent kinase activity in a biphasic manner during meiosis, in contrast to a single wave of protein expression, suggesting a post-translational control of its activity. Thus, Crs1 displays multiple functions, acting both in cell cycle progression and in several key meiosis-specific events. | Versión del editor: | https://doi.org/10.3390/ijms22115483 | URI: | http://hdl.handle.net/10261/242709 | DOI: | 10.3390/ijms22115483 |
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Meiosis-Specific_Crs.pdf | 7,63 MB | Adobe PDF | Visualizar/Abrir |
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