An aurora kinase that is a component of the chromosomal passenger protein complex and is involved in the regulation of MITOSIS. It mediates proper CHROMOSOME SEGREGATION and contractile ring function during CYTOKINESIS.

Synonyms: Serine Threonine Protein Kinase 12, Aurora Kinase B, B Kinase, Aurora, EC 2.7.11.1, Aurora-Related Kinase 2, Aurora B Kinase, Serine-Threonine Protein Kinase 12, Aurora Kinases B, Kinase, Aurora B, Aurora Related Kinase 2, Aurora B Kinases