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: Protein kinase, Other; EC 18.104.22.168; Kinase, protein; Protein kinase, Ser/Thr (non-receptor); Other group; AUR family
Molecular Function: protein serine/threonine kinase activity; protein binding; metal ion binding; protein serine/threonine/tyrosine kinase activity; histone serine kinase activity; ATP binding
Biological Process: positive regulation of cytokinesis; spindle stabilization; spindle midzone assembly involved in mitosis; spindle checkpoint; protein amino acid autophosphorylation; regulation of chromosome segregation; negative regulation of transcription from RNA polymerase II promoter; attachment of spindle microtubules to kinetochore; protein amino acid phosphorylation; negative regulation of cytokinesis; cell proliferation; cytokinesis checkpoint; anaphase-promoting complex-dependent proteasomal ubiquitin-dependent protein catabolic process; abscission; histone modification; mitotic cell cycle; negative regulation of protein binding; negative regulation of B cell apoptosis; aging
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.