Validated using a knockout cell lineRecombinantRabMAb

Recombinant Anti-Bub1 antibody [EPR18947] (ab195268)

Submit a review Submit a question References (3)

Key features and details

  • Produced recombinantly (animal-free) for high batch-to-batch consistency and long term security of supply
  • Rabbit monoclonal [EPR18947] to Bub1
  • Suitable for: WB, IHC-P, ICC
  • Knockout validated
  • Reacts with: Mouse, Rat, Human

Overview

  • Product name

    Anti-Bub1 antibody [EPR18947]
    See all Bub1 primary antibodies

  • Description

    Rabbit monoclonal [EPR18947] to Bub1

  • Host species

    Rabbit

  • Specificity

    ab195268 shows stronger signal in mouse and rat testis tissues but weaker in the human testis.

  • Tested applications

    Suitable for: WB, IHC-P, ICCmore details

  • Species reactivity

    Reacts with: Mouse, Rat, Human

  • Immunogen

    Recombinant fragment within Human Bub1 aa 1-200. The exact sequence is proprietary.
    Database link: O43683

  • Positive control

    • WB: HeLa, K562, U-2 OS, F9 and mESC whole cell lysates; Human testis and fetal liver lysates; Mouse and Rat testis lysates. IHC-P: Mouse and Rat testis tissues.

  • General notes

    Our in house IHC testing showed positive staining in testis tissue ONLY. Other tissues were negative.

    This product is a recombinant monoclonal antibody, which offers several advantages including:

    • - High batch-to-batch consistency and reproducibility
    • - Improved sensitivity and specificity
    • - Long-term security of supply
    • - Animal-free production
    For more information see here.

    Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.

    Reproducibility is key to advancing scientific discovery and accelerating scientists’ next breakthrough.

    Abcam is leading the way with our range of recombinant antibodies, knockout-validated antibodies and knockout cell lines, all of which support improved reproducibility.

    We are also planning to innovate the way in which we present recommended applications and species on our product datasheets, so that only applications & species that have been tested in our own labs, our suppliers or by selected trusted collaborators are covered by our Abpromise™ guarantee.

    In preparation for this, we have started to update the applications & species that this product is Abpromise guaranteed for.

    We are also updating the applications & species that this product has been “predicted to work with,” however this information is not covered by our Abpromise guarantee.

    Applications & species from publications and Abreviews that have not been tested in our own labs or in those of our suppliers are not covered by the Abpromise guarantee.

    Please check that this product meets your needs before purchasing. If you have any questions, special requirements or concerns, please send us an inquiry and/or contact our Support team ahead of purchase. Recommended alternatives for this product can be found below, as well as customer reviews and Q&As.

Properties

  • Form

    Liquid

  • Storage instructions

    Shipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C long term. Avoid freeze / thaw cycle.

  • Storage buffer

    pH: 7.2
    Preservative: 0.01% Sodium azide
    Constituents: 59% PBS, 40% Glycerol (glycerin, glycerine), 0.05% BSA
  • Concentration information loading...

  • Purity

    Protein A purified

  • Clonality

    Monoclonal

  • Clone number

    EPR18947

  • Isotype

    IgG

  • Research areas

Applications

Our Abpromise guarantee covers the use of ab195268 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
WB 1/1000. Detects a band of approximately 122 kDa (predicted molecular weight: 122 kDa).
IHC-P 1/50. Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.

Our in house IHC testing showed positive staining in testis tissue ONLY. Other tissues were negative.
ICC 1/100.

Target

  • Function

    Serine/threonine-protein kinase that performs 2 crucial functions during mitosis: it is essential for spindle-assembly checkpoint signaling and for correct chromosome alignment. Has a key role in the assembly of checkpoint proteins at the kinetochore, being required for the subsequent localization of CENPF, BUB1B, CENPE and MAD2L1. Required for the kinetochore localization of PLK1. Plays an important role in defining SGOL1 localization and thereby affects sister chromatid cohesion. Acts as a substrate for anaphase-promoting complex or cyclosome (APC/C) in complex with its activator CDH1 (APC/C-Cdh1). Necessary for ensuring proper chromosome segregation and binding to BUB3 is essential for this function. Can regulate chromosome segregation in a kinetochore-independent manner. Can phosphorylate BUB3. The BUB1-BUB3 complex plays a role in the inhibition of APC/C when spindle-assembly checkpoint is activated and inhibits the ubiquitin ligase activity of APC/C by phosphorylating its activator CDC20. This complex can also phosphorylate MAD1L1. Kinase activity is essential for inhibition of APC/CCDC20 and for chromosome alignment but does not play a major role in the spindle-assembly checkpoint activity. Mediates cell death in response to chromosome missegregation and acts to suppress spontaneous tumorigenesis.

  • Tissue specificity

    High expression in testis and thymus, less in colon, spleen, lung and small intestine. Expressed in fetal thymus, bone marrow, heart, liver, spleen and thymus. Expression is associated with cells/tissues with a high mitotic index.

  • Sequence similarities

    Belongs to the protein kinase superfamily. Ser/Thr protein kinase family. BUB1 subfamily.
    Contains 1 BUB1 N-terminal domain.
    Contains 1 protein kinase domain.

  • Domain

    The KEN box is required for its ubiquitination and degradation.
    BUB1 N-terminal domain directs kinetochore localization and binding to BUB3.

  • Post-translational
    modifications

    Phosphorylated upon DNA damage, probably by ATM or ATR. Upon spindle-assembly checkpoint activation it is hyperphosphorylated and its kinase activity toward CDC20 is stimulated. Phosphorylation at Thr-609 is required for interaction with PLK1, phosphorylation at this site probably creates a binding site for the POLO-box domain of PLK1, thus enhancing the PLK1-BUB1 interaction.
    Ubiquitinated and degraded during mitotic exit by APC/C-Cdh1.

  • Cellular localization

    Nucleus. Chromosome > centromere > kinetochore. Nuclear in interphase cells. Accumulates gradually during G1 and S phase of the cell cycle, peaks at G2/M, and drops dramatically after mitosis. Localizes to the outer kinetochore. Kinetochore localization is required for normal mitotic timing and checkpoint response to spindle damage and occurs very early in prophase. AURKB, CASC5 and INCENP are required for kinetochore localization.
  • Information by UniProt

  • Database links

    see all

  • Alternative names

    • Bub1 antibody
    • BUB1 budding uninhibited by benzimidazoles 1 homolog antibody
    • BUB1 budding uninhibited by benzimidazoles 1 homolog (yeast) antibody
    • BUB1 mitotic checkpoint serine/threonine kinase antibody
    • BUB1, S. cerevisiae, homolog of antibody
    • BUB1_HUMAN antibody
    • BUB1A antibody
    • BUB1L antibody
    • Budding uninhibited by benzimidazoles 1 (yeast homolog) antibody
    • Budding uninhibited by benzimidazoles 1 homolog antibody
    • Budding uninhibited by benzimidazoles 1, S. cerevisiae, homolog of antibody
    • hBUB1 antibody
    • Homolog of mitotic checkpoint gene BUB1 antibody
    • Mitotic checkpoint gene BUB1 antibody
    • Mitotic checkpoint serine/threonine protein kinase BUB1 antibody
    • Mitotic checkpoint serine/threonine-protein kinase BUB1 antibody
    • Mitotic spindle checkpoint kinase antibody
    • Putative serine/threonine protein kinase antibody
    see all

Images

  • Western blot - Anti-Bub1 antibody [EPR18947] (ab195268)
    Western blot - Anti-Bub1 antibody [EPR18947] (ab195268)
    All lanes : Anti-Bub1 antibody [EPR18947] (ab195268) at 1/1000 dilution

    Lane 1 : Wild-type HeLa cell lysate
    Lane 2 : BUB1 knockout HeLa cell lysate

    Lysates/proteins at 20 µg per lane.

    Performed under reducing conditions.

    Predicted band size: 122 kDa
    Observed band size: 125 kDa
    why is the actual band size different from the predicted?



    Lanes 1- 2: Merged signal (red and green). Green - ab195268 observed at 125 kDa. Red - Anti-GAPDH antibody [6C5] - Loading Control (ab8245) observed at 37 kDa.

     ab195268 was shown to react with Bub1 in wild-type HeLa cells in western blot. Loss of signal was observed when knockout cell line ab265145 (knockout cell lysate ab257373) was used. Wild-type HeLa and BUB1 knockout HeLa cell lysates were subjected to SDS-PAGE. ab195268 and Anti-GAPDH antibody [6C5] - Loading Control (ab8245) were incubated overnight at 4°C at a 1 in 1000 Dilution and a 1 in 20000 dilution respectively. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye®800CW) preadsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye®680RD) preadsorbed (ab216776) secondary antibodies at 1 in 20000 dilution for 1 hour at room temperature before imaging.

  • Western blot - Anti-Bub1 antibody [EPR18947] (ab195268)
    Western blot - Anti-Bub1 antibody [EPR18947] (ab195268)

    Lane 1: Wild-type HAP1 cell lysate (20 µg)
    Lane 2: Bub1 knockout HAP1 cell lysate (20 µg)
    Lane 3: HeLa cell lysate (20 µg)
    Lane 4: F9 cell lysate (20 µg)
    Lanes 1 - 4: Merged signal (red and green). Green - ab195268 observed at 125 kDa. Red - loading control, ab8245, observed at 37 kDa.

    ab195268 was shown to recognize Bub1 when Bub1 knockout samples were used, along with additional cross-reactive bands. Wild-type and Bub1 knockout samples were subjected to SDS-PAGE. Ab195268 and ab8245 (loading control to GAPDH) were diluted at 1/1000 and 1/10,000 dilution respectively and incubated overnight at 4C. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye® 680RD) preadsorbed ( ab216776) secondary antibodies at 1/10,000 dilution for 1 hour at room temperature before imaging.

  • Immunocytochemistry - Anti-Bub1 antibody [EPR18947] (ab195268)
    Immunocytochemistry - Anti-Bub1 antibody [EPR18947] (ab195268)

    Ab195268 staining Bub1 in HeLa (human cervix adenocarcinoma epithelial cell) cells by Immunocytochemistry. Cells were fixed with 4% paraformaldehyde and permeabilised with 0.1% TritonX-100. Samples were incubated with primary antibody at 1:100 dilution (7.8 μg/ml). Alexa Fluor® 594 Anti-alpha tubulin [DM1A] – Microtubule Marker (ab195889) was used as the counterstain antibody at 1:200 dilution (2.5 μg/ml).  An AlexaFluor®488 Goat anti-Rabbit (ab150077) was used as a secondary antibody at 1:1000 dilution (2µg/ml). DAPI was used as a nuclear counterstain. Confocal image showing positive kinetochore staining in HeLa cells in M phase.

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Bub1 antibody [EPR18947] (ab195268)
    Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Bub1 antibody [EPR18947] (ab195268)

    Immunohistochemical analysis of paraffin-embedded Rat testis tissue labeling Bub1 with ab195268 at 1/50 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) (ab97051) at 1/500 dilution.

    Nucleus staining on Rat testis is observed.

    Counter stained with Hematoxylin.

    Secondary antibody only control: Used PBS instead of primary antibody, secondary antibody is ab97051 at 1/500 dilution.

    Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.

  • Western blot - Anti-Bub1 antibody [EPR18947] (ab195268)
    Western blot - Anti-Bub1 antibody [EPR18947] (ab195268)
    All lanes : Anti-Bub1 antibody [EPR18947] (ab195268) at 1/1000 dilution

    Lane 1 : HeLa (Human epithelial cell line from cervix adenocarcinoma) whole cell lysate
    Lane 2 : K562 (Human chronic myelogenous leukemia cell line from bone marrow) whole cell lysate
    Lane 3 : U-2 OS (Human bone osteosarcoma epithelial cell line) whole cell lysate

    Lysates/proteins at 20 µg per lane.

    Secondary
    All lanes : Goat Anti-Rabbit IgG H&L (HRP) (ab97051) at 1/100000 dilution

    Predicted band size: 122 kDa
    Observed band size: 122 kDa



    Blocking/Dilution buffer and concentration: 5% NFDM/TBST.

    Exposure time: Lane 1 & 2: 10 seconds; Lane 2: 3 minutes.

  • Western blot - Anti-Bub1 antibody [EPR18947] (ab195268)
    Western blot - Anti-Bub1 antibody [EPR18947] (ab195268)
    All lanes : Anti-Bub1 antibody [EPR18947] (ab195268) at 1/1000 dilution

    Lane 1 : Human testis lysate
    Lane 2 : Human fetal liver lysate

    Lysates/proteins at 10 µg per lane.

    Secondary
    All lanes : Goat Anti-Rabbit IgG Peroxidase Conjugate, specific to the non-reduced form of IgG at 1/10000 dilution

    Predicted band size: 122 kDa
    Observed band size: 122 kDa


    Exposure time: 3 minutes


    Blocking/Dilution buffer: 5% NFDM/TBST.

  • Western blot - Anti-Bub1 antibody [EPR18947] (ab195268)
    Western blot - Anti-Bub1 antibody [EPR18947] (ab195268)
    All lanes : Anti-Bub1 antibody [EPR18947] (ab195268) at 1/1000 dilution

    Lane 1 : Mouse testis lysate
    Lane 2 : Rat testis lysate
    Lane 3 : F9 (Mouse embryonic testicular cancer cell line) whole cell lysate
    Lane 4 : mESC (Mouse embryonic stem cell line) whole cell lysate

    Lysates/proteins at 20 µg per lane.

    Secondary
    All lanes : Goat Anti-Rabbit IgG H&L (HRP) (ab97051) at 1/100000 dilution

    Predicted band size: 122 kDa
    Observed band size: 122 kDa


    Exposure time: 3 minutes


    Blocking/Dilution buffer: 5% NFDM/TBST.

    The molecular weight observed is consistent with what has been described in the literature PMID:17189386
    PMID:16864798

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Bub1 antibody [EPR18947] (ab195268)
    Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Bub1 antibody [EPR18947] (ab195268)

    Immunohistochemical analysis of paraffin-embedded Mouse testis tissue labeling Bub1 with ab195268 at 1/50 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) (ab97051) at 1/500 dilution.

    Nucleus staining on Mouse testis is observed.

    Counter stained with Hematoxylin.

    Secondary antibody only control: Used PBS instead of primary antibody, secondary antibody is ab97051 at 1/500 dilution.

    Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.

References (3)

Publishing research using ab195268? Please let us know so that we can cite the reference in this datasheet.

ab195268 has been referenced in 3 publications.

  • Zhu LJ  et al. BUB1 promotes proliferation of liver cancer cells by activating SMAD2 phosphorylation. Oncol Lett 19:3506-3512 (2020). PubMed: 32269624
  • Zhou C  et al. The cohesin release factor Wapl interacts with Bub3 to govern SAC activity in female meiosis I. Sci Adv 6:eaax3969 (2020). PubMed: 32284991
  • Stahl D  et al. Low BUB1 expression is an adverse prognostic marker in gastric adenocarcinoma. Oncotarget 8:76329-76339 (2017). IHC-P ; Human . PubMed: 29100315

Customer reviews and Q&As

Show All Reviews Q&A
Submit a review Submit a question

There are currently no Customer reviews or Questions for ab195268.
Please use the links above to contact us or submit feedback about this product.

Please note: All products are "FOR RESEARCH USE ONLY. NOT FOR USE IN DIAGNOSTIC PROCEDURES"
For licensing inquiries, please contact partnerships@abcam.com