AURKB / Aurora-B

aurora kinase B

Serine/threonine-protein kinase 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. Involved in the bipolar attachment of spindle microtubules to kinetochores and is a key regulator for the onset of cytokinesis during mitosis. Required for central/midzone spindle assembly and cleavage furrow formation. Key component of the cytokinesis checkpoint, a process required to delay abscission to prevent both premature resolution of intercellular chromosome bridges and accumulation of DNA damage: phosphorylates CHMP4C, leading to retain abscission-competent VPS4 (VPS4A and/or VPS4B) at the midbody ring until abscission checkpoint signaling is terminated at late cytokinesis (PubMed:22422861, PubMed:24814515). AURKB phosphorylates the CPC complex subunits BIRC5/survivin, CDCA8/borealin and INCENP. Phosphorylation of INCENP leads to increased AURKB activity. Other known AURKB substrates involved in centromeric functions and mitosis are CENPA, DES/desmin, GPAF, KIF2C, NSUN2, RACGAP1, SEPT1, VIM/vimentin, GSG2/Haspin, and histone H3. A positive feedback loop involving GSG2 and AURKB contributes to localization of CPC to centromeres. Phosphorylation of VIM controls vimentin filament segregation in cytokinetic process, whereas histone H3 is phosphorylated at 'Ser-10' and 'Ser-28' during mitosis (H3S10ph and H3S28ph, respectively). A positive feedback between GSG2 and AURKB contributes to CPC localization. AURKB is also required for kinetochore localization of BUB1 and SGOL1. Phosphorylation of p53/TP53 negatively regulates its transcriptional activity. Key regulator of active promoters in resting B- and T-lymphocytes: acts by mediating phosphorylation of H3S28ph at active promoters in resting B-cells, inhibiting RNF2/RING1B-mediated ubiquitination of histone H2A and enhancing binding and activity of the USP16 deubiquitinase at transcribed genes.

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Proteins (6)

Type

Over-Expression Lysate (2)

Recombinant (4)

Target

AURKB / Aurora-B (6)

Publications

No (6)

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GST (1)

GST, N-terminus (1)

His (1)

Myc-DDK (Flag) (3)

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Human (5)

Source

293T Cells (1)

E. coli (1)

HEK 293 Cells (2)

Wheat Germ Extract (2)

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Purified (2)

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Human AURKB / Aurora-B Protein (Recombinant GST) (Full Length) - LS-G31531

Source:

Wheat Germ Extract

Tag:

GST

Molecular Weight:

63.47 kDa

Price:

2 µg/$439

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Human AURKB / Aurora-B Protein (Recombinant GST, N-terminus) (aa1-90) - LS-G61031

Source:

Wheat Germ Extract

Tag:

GST, N-terminus

Price:

10 µg/$479; 25 µg/$670

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Human AURKB / Aurora-B Protein (Over-Expression Lysate Myc-DDK (Flag)) (Full Length) - LS-G80048

Source:

293T Cells

Tag:

Myc-DDK (Flag)

Molecular Weight:

39.1 kDa

Price:

20 µg/$150

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Human AURKB / Aurora-B Protein (Recombinant Myc-DDK (Flag)) (Full Length) - LS-G67520

Source:

HEK 293 Cells

Tag:

Myc-DDK (Flag)

Molecular Weight:

39.1 kDa

Price:

20 µg/$1,107

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AURKB / Aurora-B Protein (Over-Expression Lysate Myc-DDK (Flag)) (Full Length) - LS-G116802

Source:

HEK 293 Cells

Tag:

Myc-DDK (Flag)

Molecular Weight:

39.1 kDa

Price:

100 µg/$494

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Human AURKB / Aurora-B Protein (Recombinant His) - LS-G620

Source:

E. coli

Tag:

His

Price:

100 µg/$511; 500 µg/$1,348; 20 µg/$311

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