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Immunogen sequence: PGSPHSGVQ TSLEMFYSID LSPVKCRSPL QTPSSGQFSS SPIQASAKKY SLGSITSPSP ISSPTFSPIE FQIGETPLSE QRKFTVHSPD ASSGTNSNGI TNPCIRSPYI DGCSPIKNWS PMRLQMYSGG TQYRTSVIQI PFTLETQGED EEDKENIPST DVSSPAMDAA GIHLRQFSNE ASTHGTHLVV TAMSVTQNQS SASEKELALL QDVEREKDNN TVDMVDPIEI ADETTWIKEP VDNGSLPMTD FVSGIAFSIE NSHMCMSPLA ESSVIPCESS NIQMDSGYNT QNCGSNIMDT VGAESYCKES DAQTCEVESK SQAFNMKQDH TTQRCWMKTA SPFQCSSP (213-559 aa encoded by BC056876)
Bora (Protein aurora borealis) is a key activator of Aurora Related Protein Kinase A (ARK-1), which is a centrosome-associated serine/threonine kinase that regulates centrosome maturation, bipolar spindle assembly and chromosome segregation during mitosis. Bora is localized to the nucleus until mitosis is initiated, then translocates to the cytoplasm in a Cdc2 dependent manner. Activation of Cdc2 initiates the release of Bora into the cytoplasm where it can bind and activate ARK-1. PLK1 (polo-like kinase-1) interacts with Bora to control the accessibility of its activation loop for phosphorylation and activation by ARK-1. Bora and ARK-1 cooperatively activate PLK1 and control mitotic entry. Bora mutants result in multipolar spindles in mitosis identical to those observed when ARK-1 function is blocked. Thus, the ARK1-Bora-PLK1 regulatory circuit in mammalian cells elucidates a key mechanism in cell cycle regulation. At least three isoforms of Bora are known to exist.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Protein Aliases: HsBora; Protein aurora borealis; RP11-342J4.2
Gene Aliases: BORA; C13orf34
UniProt ID: (Human) Q6PGQ7
Entrez Gene ID: (Human) 79866
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