Abstract
Kinetochores are nucleoprotein assemblies responsible for the attachment of chromosomes to spindle microtubules during mitosis. The KMN network, a crucial constituent of the outer kinetochore, creates an interface that connects microtubules to centromeric chromatin. The NDC80, MIS12, and KNL1 complexes form the core of the KMN network. We recently reported the structural organization of the human NDC80 complex. In this study, we extend our analysis to the human MIS12 complex and show that it has an elongated structure with a long axis of ∼22 nm. Through biochemical analysis, cross-linking–based methods, and negative-stain electron microscopy, we investigated the reciprocal organization of the subunits of the MIS12 complex and their contacts with the rest of the KMN network. A highlight of our findings is the identification of the NSL1 subunit as a scaffold supporting interactions of the MIS12 complex with the NDC80 and KNL1 complexes. Our analysis has important implications for understanding kinetochore organization in different organisms.
Bibliography
Petrovic, A., Pasqualato, S., Dube, P., Krenn, V., Santaguida, S., Cittaro, D., Monzani, S., Massimiliano, L., Keller, J., Tarricone, A., Maiolica, A., Stark, H., & Musacchio, A. (2010). The MIS12 complex is a protein interaction hub for outer kinetochore assembly. Journal of Cell Biology, 190(5), 835â852.
Authors
13
- Arsen Petrovic (first)
- Sebastiano Pasqualato (additional)
- Prakash Dube (additional)
- Veronica Krenn (additional)
- Stefano Santaguida (additional)
- Davide Cittaro (additional)
- Silvia Monzani (additional)
- Lucia Massimiliano (additional)
- Jenny Keller (additional)
- Aldo Tarricone (additional)
- Alessio Maiolica (additional)
- Holger Stark (additional)
- Andrea Musacchio (additional)
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85
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Dates
Type | When |
---|---|
Created | 14 years, 11 months ago (Sept. 6, 2010, 10:33 a.m.) |
Deposited | 2 years, 1 month ago (July 29, 2023, 1:08 a.m.) |
Indexed | 1 week, 1 day ago (Aug. 23, 2025, 9:51 p.m.) |
Issued | 14 years, 11 months ago (Sept. 6, 2010) |
Published | 14 years, 11 months ago (Sept. 6, 2010) |
Published Online | 14 years, 11 months ago (Sept. 6, 2010) |
Published Print | 14 years, 11 months ago (Sept. 6, 2010) |
@article{Petrovic_2010, title={The MIS12 complex is a protein interaction hub for outer kinetochore assembly}, volume={190}, ISSN={0021-9525}, url={http://dx.doi.org/10.1083/jcb.201002070}, DOI={10.1083/jcb.201002070}, number={5}, journal={Journal of Cell Biology}, publisher={Rockefeller University Press}, author={Petrovic, Arsen and Pasqualato, Sebastiano and Dube, Prakash and Krenn, Veronica and Santaguida, Stefano and Cittaro, Davide and Monzani, Silvia and Massimiliano, Lucia and Keller, Jenny and Tarricone, Aldo and Maiolica, Alessio and Stark, Holger and Musacchio, Andrea}, year={2010}, month=sep, pages={835–852} }