Recombinant human Aurora B protein, around N-terminal 150aa
Format：
Liquid
Storage instructions：
Shipped at 4℃. Store at -20 °C for one year. Avoid repeated freeze/thaw cycles.
Concentration：
1mg/ml
Clonality：
Monoclonal
Isotype：
IgG
Applications：
WB=1:500-2000IHC-P=1:50-200IHC-F=1:50-200ICC=1:50-200IF=1:50-200（Paraffin sections need to do antigen repair）not yet tested in other applications.optimal dilutions/concentrations should be determined by the end user.
Host：
Rabbit
Product Overview：
All lanes: Western blot analysis of Aurora B with anti-Aurora B antibody (SLM52019R) at 1:500 dilution.Lane 1: Wild-type Hela whole cell lysate (10 μg).Lane 2: Aurora B knockdown Hela whole cell lysate (10 μg).Western blot analysis of Aurora B on different lysates using anti-Aurora B antibody at 1/1,000 dilution.Positive control:Lane 1: HelaLane 2: MCF-7Immunohistochemical analysis of paraffin-embedded human tonsil tissue using anti-Aurora B antibody. Counter stained with hematoxylin.
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 chromsomes 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, Feb 2012].
Function: 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. 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. 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.
Subunit: Component of the chromosomal passenger complex (CPC) composed of at least BIRC5/survivin, CDCA8/borealin, INCENP, AURKB and AURKC. Associates with RACGAP1 during M phase. Interacts with CDCA1, EVI5, JTB, NDC80, PSMA3, SEPT1 and TACC1. Interacts with SPDYC; this interaction may be required for proper localization of active, Thr-232-phosphorylated AURKB form during prometaphase and metaphase. Interacts with p53/TP53. Interacts (via the middle kinase domain) with NOC2L (via the N- and SLCterminus domains).
Subcellular Location: Nucleus. Chromosome. Chromosome, centromere. Cytoplasm, cytoskeleton, spindle. Note=Localizes on chromosome arms and inner centromeres from prophase through metaphase and then transferring to the spindle midzone and midbody from anaphase through cytokinesis. Colocalized with gamma tubulin in the mid-body. Proper localization of the active, Thr-232-phosphorylated form during metaphase may be dependent upon interaction with SPDYC.
Tissue Specificity: High level expression seen in the thymus. It is also expressed in the spleen, lung, testis, colon, placenta and fetal liver. Expressed during S and G2/M phase and expression is up-regulated in cancer cells during M phase.
Post-translational modifications: The phosphorylation of Thr-232 requires the binding to INCENP and occurs by means of an autophosphorylation mechanism. Thr-232 phosphorylation is indispensable for the AURKB kinase activity.
Ubiquitinated by different BCR (BTB-CUL3-RBX1) E3 ubiquitin ligase complexes. Ubiquitinated by the BCR(KLHL9-KLHL13) E3 ubiquitin ligase complex, ubiquitination leads to removal from mitotic chromosomes and is required for cytokinesis. During anaphase, the BCR(KLHL21) E3 ubiquitin ligase complex recruits the CPC complex from chromosomes to the spindle midzone and mediates the ubiquitination of AURKB. Ubiquitination of AURKB by BCR(KLHL21) E3 ubiquitin ligase complex may not lead to its degradation by the proteasome.
DISEASE: Note=Disruptive regulation of expression is a possible mechanism of the perturbation of chromosomal integrity in cancer cells through its dominant-negative effect on cytokinesis.
Similarity: Belongs to the protein kinase superfamily. Ser/Thr protein kinase family. Aurora subfamily. Contains 1 protein kinase domain.
All lanes: Western blot analysis of Aurora B with anti-Aurora B antibody (SLM52019R) at 1:500 dilution.
Lane 1: Wild-type Hela whole cell lysate (10 μg).
Lane 2: Aurora B knockdown Hela whole cell lysate (10 μg).
Western blot analysis of Aurora B on different lysates using anti-Aurora B antibody at 1/1,000 dilution.
Positive control:
Lane 1: Hela
Lane 2: MCF-7
Immunohistochemical analysis of paraffin-embedded human tonsil tissue using anti-Aurora B antibody. Counter stained with hematoxylin.
