required for the mitotic checkpoint which monitors the process of kinetochore-spindle attachment and delays the onset of anaphase when this process is not complete. Inhibits the activity of the anaphase promoting complex by sequestering CDC20 until all chromosomes are aligned at the metaphase plate. Interacts with Cdc20, MAD2L1BP and with ADAM17/TACE Note: This description may include information from UniProtKB.
Cellular Component: cytosol; kinetochore; nuclear pore; nucleus; perinuclear region of cytoplasm
Molecular Function: identical protein binding; protein binding; protein homodimerization activity
Biological Process: anaphase-promoting complex-dependent proteasomal ubiquitin-dependent protein catabolic process; mitotic cell cycle checkpoint; negative regulation of apoptosis; negative regulation of mitotic cell cycle; negative regulation of protein catabolic process; negative regulation of ubiquitin-protein ligase activity during mitotic cell cycle; positive regulation of ubiquitin-protein ligase activity during mitotic cell cycle; proteasomal ubiquitin-dependent protein catabolic process; protein ubiquitination during ubiquitin-dependent protein catabolic process; sister chromatid cohesion