Aurora-B (AURKB) Antibody – Rabbit Polyclonal

This gene encodes a member of the aurora kinase subfamily of serine/threonine kinases. The genes encoding the other two members of this subfamily are located on chromosomes 19 and 20. These kinases participate in the regulation of segregation of chromosomes during mitosis and meiosis through association with microtubules. A pseudogene of this gene is located on chromosome 8. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jan 2013]

AurB: 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.

Protein type: Protein kinase, Other; Protein kinase, Ser/Thr (non-receptor); Kinase, protein; EC 2.7.11.1; Other group; AUR family

Chromosomal Location of Human Ortholog: 17p13.1

Cellular Component: spindle microtubule; spindle; spindle midzone; spindle pole centrosome; midbody; nucleus; cytosol; condensed nuclear chromosome, pericentric region; chromocenter

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 checkpoint; spindle midzone assembly involved in mitosis; 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; anaphase-promoting complex-dependent proteasomal ubiquitin-dependent protein catabolic process; histone modification; abscission; mitotic cell cycle; negative regulation of protein binding; negative regulation of B cell apoptosis; aging