ArticleThe Journal of cell biology2024
Multimerization of a disordered kinetochore protein promotes accurate chromosome segregation by localizing a core dynein module.
Article in The Journal of cell biology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
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Who cites it
4 citing papers in PubMed.
- Distinct checkpoint and homolog biorientation pathways regulate meiosis I in Drosophila oocytes.PLoS genetics · 2025Article
- Distinct checkpoint and homolog biorientation pathways regulate meiosis I inbioRxiv : the preprint server for biology · 2024Article
- Meiosis-specific functions of kinetochore protein SPC105R required for chromosome segregation inMolecular biology of the cell · 2024Article
- Meiosis-specific functions of kinetochore protein SPC105R required for chromosome segregation inbioRxiv : the preprint server for biology · 2024Article
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Authors and funding
4 authors.
Funding
Abstract
Kinetochores connect chromosomes and spindle microtubules to maintain genomic integrity through cell division. Crosstalk between the minus-end directed motor dynein and kinetochore-microtubule attachment factors promotes accurate chromosome segregation by a poorly understood pathway. Here, we identify a linkage between the intrinsically disordered protein Spc105 (KNL1 orthologue) and dynein using an optogenetic oligomerization assay. Core pools of the checkpoint protein BubR1 and the adaptor complex RZZ contribute to the linkage. Furthermore, a minimal segment of Spc105 with a propensity to multimerize and which contains protein binding motifs is sufficient to link Spc105 to RZZ/dynein. Deletion of the minimal region from Spc105 compromises the recruitment of its binding partners to kinetochores and elevates chromosome missegregation due to merotelic attachments. Restoration of normal chromosome segregation and localization of BubR1 and RZZ requires both protein binding motifs and oligomerization of Spc105. Together, our results reveal that higher-order multimerization of Spc105 contributes to localizing a core pool of RZZ that promotes accurate chromosome segregation.
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Registered trials
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