Overview

  • Product name
    Anti-Topoisomerase I antibody
    See all Topoisomerase I primary antibodies
  • Description
    Rabbit polyclonal to Topoisomerase I
  • Specificity
    Ab28432 recognises Topoisomerase I.
  • Tested applications
    Suitable for: WB, ICC/IF, ELISAmore details
  • Species reactivity
    Reacts with: Human
  • Immunogen

    Recombinant full length Topoisomerase I protein (Human).

  • Positive control
    • HeLa nuclear extract.

Properties

Applications

Our Abpromise guarantee covers the use of ab28432 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 1/2000 - 1/5000. Predicted molecular weight: 91 kDa.
ICC/IF Use a concentration of 1 µg/ml.
ELISA 1/500.

Target

  • Function
    The reaction catalyzed by topoisomerases leads to the conversion of one topological isomer of DNA to another.
  • Involvement in disease
    Note=A chromosomal aberration involving TOP1 is found in a form of therapy-related myelodysplastic syndrome. Translocation t(11;20)(p15;q11) with NUP98.
  • Sequence similarities
    Belongs to the eukaryotic type I topoisomerase family.
  • Post-translational
    modifications
    Sumoylated. Lys-117 is the main site of sumoylation. Sumoylation plays a role in partitioning TOP1 between nucleoli and nucleoplasm. Levels are dramatically increased on camptothecin (CPT) treatment.
  • Cellular localization
    Nucleus > nucleolus. Nucleus > nucleoplasm. Diffuse nuclear localization with some enrichment in nucleoli. On CPT treatment, cleared from nucleoli into nucleoplasm. Sumolyated forms found in both nucleoplasm and nucleoli.
  • Information by UniProt
  • Database links
  • Alternative names
    • DNA topoisomerase 1 antibody
    • DNA topoisomerase I antibody
    • NUP98 fusion gene antibody
    • TOP 1 antibody
    • TOP I antibody
    • TOP1 antibody
    • TOP1_HUMAN antibody
    • TOPI antibody
    • Topoisomerase (DNA) I antibody
    • Topoisomerase 1 antibody
    • Topoisomerase1 antibody
    • TopoisomeraseI antibody
    • Type I DNA topoisomerase antibody
    see all

Images

  • ICC/IF image of ab28432 stained MCF-7 cells. The cells were 4% formaldehyde fixed (10 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody (ab28432, 1µg/ml) overnight at +4°C. The secondary antibody (green) was Alexa Fluor® 488 goat anti-rabbit IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM.
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  • ICC/IF image of ab28432 stained HepG2 cells. The cells were 100% methanol fixed (5 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody (ab28432, 1µg/ml) overnight at +4°C. The secondary antibody (green) was DyLight® 488 goat anti-rabbit IgG - H&L, pre-adsorbed (ab96899) used at a 1/250 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM.

References

This product has been referenced in:
  • Jensen NF  et al. Characterization of DNA topoisomerase I in three SN-38 resistant human colon cancer cell lines reveals a new pair of resistance-associated mutations. J Exp Clin Cancer Res 35:56 (2016). Read more (PubMed: 27029323) »
  • Xia Q  et al. Characterization of the transcriptional machinery bound across the widely presumed type 2 diabetes causal variant, rs7903146, within TCF7L2. Eur J Hum Genet N/A:N/A (2014). Human . Read more (PubMed: 24667787) »

See all 9 Publications for this product

Customer reviews and Q&As

We have not tested ab28432 for mouse reactivity, but is likely that most topoisomerase antibodies, including ab28432, that react with human samples will react with mouse samples, given the 96% identity shared by the two proteins. This is based on align...

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Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"

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