Download MendeleyCentromere/kinetochore is assembled through CENP-C oligomerization.
Hara, M., Ariyoshi, M., Sano, T., Nozawa, R.S., Shinkai, S., Onami, S., Jansen, I., Hirota, T., Fukagawa, T.(2023) Mol Cell 83: 2188-2205.e13
- PubMed: 37295434
- DOI: https://doi.org/10.1016/j.molcel.2023.05.023
- Primary Citation of Related Structures:
7X85 - PubMed Abstract:
Kinetochore is an essential protein complex required for accurate chromosome segregation. The constitutive centromere-associated network (CCAN), a subcomplex of the kinetochore, associates with centromeric chromatin and provides a platform for the kinetochore assembly. The CCAN protein CENP-C is thought to be a central hub for the centromere/kinetochore organization. However, the role of CENP-C in CCAN assembly needs to be elucidated. Here, we demonstrate that both the CCAN-binding domain and the C-terminal region that includes the Cupin domain of CENP-C are necessary and sufficient for chicken CENP-C function. Structural and biochemical analyses reveal self-oligomerization of the Cupin domains of chicken and human CENP-C. We find that the CENP-C Cupin domain oligomerization is vital for CENP-C function, centromeric localization of CCAN, and centromeric chromatin organization. These results suggest that CENP-C facilitates the centromere/kinetochore assembly through its oligomerization.
Organizational Affiliation:
Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka 565-0871, Japan. Electronic address: mahara@fbs.osaka-u.ac.jp.
