| First Author | Evans HJ | Year | 2007 |
| Journal | Exp Cell Res | Volume | 313 |
| Issue | 11 | Pages | 2427-37 |
| PubMed ID | 17498689 | Mgi Jnum | J:148057 |
| Mgi Id | MGI:3843423 | Doi | 10.1016/j.yexcr.2007.03.035 |
| Citation | Evans HJ, et al. (2007) Conserved C-terminal domains of mCenp-F (LEK1) regulate subcellular localization and mitotic checkpoint delay. Exp Cell Res 313(11):2427-37 |
| abstractText | Centromeric Protein-F (Cenp-F) family members have been identified in organisms from yeast to human. Cenp-F proteins are a component of kinetochores during mitosis, bind to the Rb family of tumor suppressors, and have regulatory effects on the cell cycle and differentiation; however, their role in these processes has not been resolved. Here, we provide evidence that the role of murine Cenp-F (mCenp-F, also known as LEK1) remains largely conserved and that the domains within the C-terminus collectively function to regulate the G2/M cell cycle checkpoint. Overexpression of the C-terminal domain of mCenp-F decreases DNA synthesis. Analyses of deletion mutants of mCenp-F reveal that the complete C-terminal domain is required to delay cell cycle progression at G2/M. Signal transduction pathway profiling experiments indicate that the mCenp-F-mediated cell cycle delay does not involve transcriptional activity of key cell cycle regulators such as Rb, E2F, p53, or Myc. However, endogenous mCenp-F colocalizes with pRb and p107, which demonstrates in vivo protein-protein interaction during cell division. These observations suggest that the domains of the C-terminus of mCenp-F have a conserved function in control of mitotic progression through protein-protein interaction with pocket proteins, thus providing a direct connection between cell cycle regulation and mitotic progression. |
