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BUB1B / BubR1

BUB1 mitotic checkpoint serine/threonine kinase B

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.

Gene Name: BUB1 mitotic checkpoint serine/threonine kinase B
Family/Subfamily: Protein Kinase , BUB1
Synonyms: BUB1B, Bub1A, BUBR1, HBUBR1, Protein SSK1, SSK1, BUB1beta, MAD3L
Target Sequences: NM_001211 NP_001202.4 O60566

Publications (7)

1
Human BUBR1 is a mitotic checkpoint kinase that monitors CENP-E functions at kinetochores and binds the cyclosome/APC. Chan GK, Jablonski SA, Sudakin V, Hittle JC, Yen TJ. The Journal of cell biology. 1999 146:941-54. [PubMed:10477750] [PMC:PMC2169490]
2
Dido disruption leads to centrosome amplification and mitotic checkpoint defects compromising chromosome stability. Trachana V, van Wely KH, Guerrero AA, Ftterer A, Martnez-A C. Proceedings of the National Academy of Sciences of the United States of America. 2007 104:2691-6. [PubMed:17299043] [PMC:PMC1815243]
3
Plk1 is upregulated in androgen-insensitive prostate cancer cells and its inhibition leads to necroptosis. Sili V, Redondo-Muoz J, Carrera AC. Oncogene. 2012 (WB; Human) [PubMed:22890325] [PMC:PMC3499666]
4
Phosphoinositide 3-kinase regulates chromosome segregation in mitosis. Sili V, Redondo-Muoz J, Carrera AC. Molecular biology of the cell. 2012 23:4526-42. (ICC; Human) [PubMed:23051731] [PMC:PMC3510015]
5
Phosphorylation of Astrin Regulates Its Kinetochore Function. Chung HJ, Park JE, Lee NS, Kim H, Jang CY. The Journal of biological chemistry. 2016 291:17579-92. (WB; Human) [Full Text Article] [PubMed:27325694] [PMC:PMC5016155] Related Antibodies: LS-C2771.
6
DDA3 and Mdp3 modulate Kif2a recruitment onto the mitotic spindle to control minus-end spindle dynamics. Kwon HJ, Park JE, Song H, Jang CY. Journal of cell science. 2016 129:2719-25. (WB; Human) [Full Text Article] [PubMed:27284004] Related Antibodies: LS-C2771.
7
PRMT6-mediated H3R2me2a guides Aurora B to chromosome arms for proper chromosome segregation. Seul Kim , Nam Hyun Kim , Ji Eun Park , Jee Won Hwang, Nayeon Myung, Ki-Tae Hwang, Young A Kim, Chang-Young Jang, Yong Kee Kim. Nature communications. 2020 Jan;11:612. [Full Text Article] [PubMed:32001712] [PMC:PMC6992762] Related Antibodies: LS-C2771.
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Proteins (5)
Over-Expression Lysate (2)
Recombinant (3)
BUB1B / BubR1 (5)
No (5)
GST (1)
GST, N-terminus (1)
Myc-DDK (Flag) (3)
Human (4)
293T Cells (1)
HEK 293 Cells (2)
Wheat Germ Extract (2)
Purified (1)
BUB1B / BubR1 Protein - Purified recombinant protein BUB1B was analyzed by SDS-PAGE gel and Coomassie Blue Staining
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HEK 293 Cells
Myc-DDK (Flag)
119.3 kDa
20 µg/$1,107
BUB1B / BubR1 Protein - 12.5% SDS-PAGE Stained with Coomassie Blue.
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Wheat Germ Extract
GST, N-terminus
10 µg/$479; 25 µg/$670
BUB1B / BubR1 Protein - Western validation with an anti-DDK antibody * L: Control HEK293 lysate R: Over-expression lysate
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293T Cells
Myc-DDK (Flag)
119.3 kDa
20 µg/$150
BUB1B / BubR1 Protein - 12.5% SDS-PAGE of human BUB1B stained with Coomassie Blue
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Wheat Germ Extract
GST
141.24 kDa
10 µg/$479; 25 µg/$670
BUB1B / BubR1 Protein - Western validation with an anti-DDK antibody * L: Control HEK293 lysate R: Over-expression lysate
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HEK 293 Cells
Myc-DDK (Flag)
119.3 kDa
100 µg/$494
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For RESEARCH USE ONLY. Intended for use by laboratory professionals. Not intended for human diagnostic or therapeutic purposes.

The data on this page has been compiled from LifeSpan internal sources, the National Center for Biotechnology Information (NCBI), and The Universal Protein Resource (UniProt).