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Key Documents

WH0007153M1

Sigma-Aldrich

Monoclonal Anti-TOP2A antibody produced in mouse

clone 1E2, purified immunoglobulin, buffered aqueous solution

Synonym(s):

Anti-TOP2, Anti-TP2A, Anti-topoisomerase (DNA) II alpha 170kDa

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About This Item

UNSPSC Code:
12352203
NACRES:
NA.41

biological source

mouse

conjugate

unconjugated

antibody form

purified immunoglobulin

antibody product type

primary antibodies

clone

1E2, monoclonal

form

buffered aqueous solution

species reactivity

human

technique(s)

immunohistochemistry (formalin-fixed, paraffin-embedded sections): suitable
indirect ELISA: suitable
indirect immunofluorescence: suitable
western blot: 1-5 μg/mL

isotype

IgG1κ

GenBank accession no.

UniProt accession no.

shipped in

dry ice

storage temp.

−20°C

target post-translational modification

unmodified

Gene Information

human ... TOP2A(7153)

General description

This gene encodes a DNA topoisomerase, an enzyme that controls and alters the topologic states of DNA during transcription. This nuclear enzyme is involved in processes such as chromosome condensation, chromatid separation, and the relief of torsional stress that occurs during DNA transcription and replication. It catalyzes the transient breaking and rejoining of two strands of duplex DNA which allows the strands to pass through one another, thus altering the topology of DNA. Two forms of this enzyme exist as likely products of a gene duplication event. The gene encoding this form, alpha, is localized to chromsome 17 and the beta gene is localized to chromosome 3. The gene encoding this enzyme functions as the target for several anticancer agents and a variety of mutations in this gene have been associated with the development of drug resistance. Reduced activity of this enzyme may also play a role in ataxia-telangiectasia. (provided by RefSeq)

Immunogen

TOP2A (NP_001058, 1435 a.a. ~ 1531 a.a) partial recombinant protein with GST tag. MW of the GST tag alone is 26 KDa.

Sequence
RAAPKGTKRDPALNSGVSQKPDPAKTKNRRKRKPSTSDDSDSNFEKIVSKAVTSKKSKGESDDFHMDFDSAVAPRAKSVRAKKPIKYLEESDEDDLF

Biochem/physiol Actions

Topoisomerase II A (TOP2A) enzyme plays a vital role in DNA replication and cell proliferation. Experimental studies show an increased expression of this enzyme in Chinese patients with gastric carcinoma. DNA topoisomerase 2-α acts as a target enzyme for an anthracycline drug called as epirubicin and many other antineoplastic drugs. Top2α is involved in reducing the topological stress in cells. The hsa-miR-485-3p downregulates the expression of nuclear transcription factor Y subunit β (NFYB), which acts as a mediator of Top2α. Consequently, it decreases the expression of Top2α and its drug responsiveness. Top2α enzyme plays an important role in maintenance of chromosome condensation and segregation. Ataxia telangiectasia mutated (ATM)-dependent regulation of TOP2A helps in TOP2 stability and also it′s sensitivity to TOP2 inhibitor.

Physical form

Solution in phosphate buffered saline, pH 7.4

Legal Information

GenBank is a registered trademark of United States Department of Health and Human Services

Disclaimer

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

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Storage Class Code

10 - Combustible liquids

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Novel regulation of nuclear factor-YB by miR-485-3p affects the expression of DNA topoisomerase IIa and drug responsiveness.
Chen CF
Molecular Pharmacology, 79(4), 735-741 (2011)
Analysis of EGFR, HER2, and TOP2A gene status and chromosomal polysomy in gastric adenocarcinoma from Chinese patients.
Liang Z
BMC Cancer, 8, 363-363 (2008)
Ataxia telangiectasia mutated-dependent regulation of topoisomerase II alpha expression and sensitivity to topoisomerase II inhibitor.
Tamaichi H
Cancer Science, 104(2), 178-184 (2013)
TOP2A and HER-2 gene amplification in fine needle aspirates from breast carcinomas.
Bofin AM
Cytopathology : Official Journal of the British Society For Clinical Cytology, 14(6), 314-319 (2003)
RECQL5 cooperates with Topoisomerase II alpha in DNA decatenation and cell cycle progression.
Ramamoorthy M
Nucleic Acids Research, 40(4), 1621-1635 (2012)

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