a member of the AUR family of kinases. May be directly involved in regulating the cleavage of polar spindle microtubules and is a key regulator for the onset of cytokinesis during mitosis. Expressed during S and G2/M phase and expression is upregulated in cancer cells during M phase. Localized to the midzone of central spindle in late anaphase and concentrated into the midbody in telophase and cytokinesis. Colocalizes with gamma tubulin in the mid-body. Component of the chromosomal passenger complex (CPC), a complex that acts as a key regulator of mitosis. The CPC complex has essential functions at the centromere in ensuring correct chromosome alignment and segregation and is required for chromatin-induced microtubule stabilization and spindle assembly. Overexpressed in colorectal and other cancer cell lines and thought to cause aneuploidy via histone phosphorylation. Note: This description may include information from UniProtKB.
Protein type: AUR family; EC 18.104.22.168; Kinase, protein; Other group; Protein kinase, Other; Protein kinase, Ser/Thr (non-receptor)
Molecular Function: histone serine kinase activity; protein binding; protein serine/threonine kinase activity; protein serine/threonine/tyrosine kinase activity
Biological Process: abscission; anaphase-promoting complex-dependent proteasomal ubiquitin-dependent protein catabolic process; attachment of spindle microtubules to kinetochore; histone modification; negative regulation of B cell apoptosis; negative regulation of cytokinesis; negative regulation of protein binding; negative regulation of transcription from RNA polymerase II promoter; positive regulation of cytokinesis; positive regulation of telomerase activity; positive regulation of telomere maintenance via telomerase; protein amino acid autophosphorylation; protein amino acid phosphorylation; protein sumoylation; protein ubiquitination during ubiquitin-dependent protein catabolic process; regulation of chromosome segregation; sister chromatid cohesion; spindle midzone assembly involved in mitosis; spindle organization and biogenesis