Correction: Kinetochore-localized BUB-1/BUB-3 complex promotes anaphase onset in C. elegans
| Autor: | Pablo Lara-Gonzalez, Taekyung Kim, Christian O. De Groot, Arshad Desai, Mark W. Moyle, Karen Oegema |
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| Rok vydání: | 2016 |
| Předmět: |
Genetics
Embryo Nonmammalian biology Kinetochore Correction Cell Cycle Proteins Cell Biology Cell Cycle Checkpoints Protein Serine-Threonine Kinases biology.organism_classification Mitotic Anaphase Chromosomes Chromosome segregation Chromosome Segregation Report Animals Anaphase Caenorhabditis elegans Caenorhabditis elegans Proteins Kinetochores Research Articles Signal Transduction |
| Zdroj: | The Journal of Cell Biology |
| ISSN: | 1540-8140 |
| Popis: | In early C. elegans embryos, the kinetochore-localized BUB- 1/BUB-3 complex promotes anaphase onset independently of its roles in spindle checkpoint signaling and chromosome alignment. The conserved Bub1/Bub3 complex is recruited to the kinetochore region of mitotic chromosomes, where it initiates spindle checkpoint signaling and promotes chromosome alignment. Here we show that, in contrast to the expectation for a checkpoint pathway component, the BUB-1/BUB-3 complex promotes timely anaphase onset in Caenorhabditis elegans embryos. This activity of BUB-1/BUB-3 was independent of spindle checkpoint signaling but required kinetochore localization. BUB-1/BUB-3 inhibition equivalently delayed separase activation and other events occurring during mitotic exit. The anaphase promotion function required BUB-1’s kinase domain, but not its kinase activity, and this function was independent of the role of BUB-1/BUB-3 in chromosome alignment. These results reveal an unexpected role for the BUB-1/BUB-3 complex in promoting anaphase onset that is distinct from its well-studied functions in checkpoint signaling and chromosome alignment, and suggest a new mechanism contributing to the coordination of the metaphase-to-anaphase transition. |
| Databáze: | OpenAIRE |
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