Rabbit anti-Human BUB1B Polyclonal Antibody

Uniprot Id

O60566

Target Species

Human

Target Name

BUB1B

Target Full Name

Mitotic checkpoint serine/threonine-protein kinase BUB1 beta

Target Function

Essential component of the mitotic checkpoint. Required for normal mitosis progression. The mitotic checkpoint delays anaphase until all chromosomes are properly attached to the mitotic spindle. One of its checkpoint functions is to inhibit the activity of the anaphase-promoting complex/cyclosome (APC/C) by blocking the binding of CDC20 to APC/C, independently of its kinase activity. The other is to monitor kinetochore activities that depend on the kinetochore motor CENPE. Required for kinetochore localization of CENPE. Negatively regulates PLK1 activity in interphase cells and suppresses centrosome amplification. Also implicated in triggering apoptosis in polyploid cells that exit aberrantly from mitotic arrest. May play a role for tumor suppression.

Target Involvement

Premature chromatid separation trait (PCS); Mosaic variegated aneuploidy syndrome 1 (MVA1)

Target Subcellular Location

Cytoplasm. Nucleus. Chromosome, centromere, kinetochore. Cytoplasm, cytoskeleton, microtubule organizing center, centrosome. Note=Cytoplasmic in interphase cells. Associates with the kinetochores in early prophase. Kinetochore localization requires BUB1, PLK1 and KNL1.

Target Protein Families

Protein kinase superfamily, Ser/Thr protein kinase family, BUB1 subfamily

Target Tissue Specificity

Highly expressed in thymus followed by spleen. Preferentially expressed in tissues with a high mitotic index.

Target Synonyms

Beta homolg of S. cerevisiae BUB 1; Beta homolg of S. cerevisiae budding uninhibited by benzimidazoles; BUB 1B; BUB1 budding uninhibited by benzimidazoles 1 homolog beta; Bub1A; BUB1B; BUB1B_HUMAN; BUB1beta; BUBR1; Budding Uninhibited by Benzimidazoles 1 beta ; Budding uninhibited by benzimidazoles 1 homolog beta (yeast); hBUBR1; MAD3/BUB1 related protein kinase; MAD3/BUB1-related protein kinase; MAD3L; Mitotic checkpoint gene BUB1B; Mitotic checkpoint kinase MAD3L; Mitotic checkpoint serine/threonine protein kinase BUB1 beta; Mitotic checkpoint serine/threonine-protein kinase BUB1 beta; MVA1; OTTHUMP00000160319; Protein SSK1; SSK 1; SSK1

Target Background

This gene encodes a kinase involved in spindle checkpoint function. The protein has been localized to the kinetochore and plays a role in the inhibition of the anaphase-promoting complex/cyclosome (APC/C), delaying the onset of anaphase and ensuring proper chromosome segregation. Impaired spindle checkpoint function has been found in many forms of cancer.