Monoclonal Anti-Topoisomerase I antibody produced in mouse

clone Mab1, purified immunoglobulin, buffered aqueous solution

MDL number:
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biological source


antibody form

purified immunoglobulin

antibody product type

primary antibodies


Mab1, monoclonal


buffered aqueous solution

mol wt

antigen ~100 kDa

species reactivity



microarray: suitable
western blot: 1-2 μg/mL using A231 human kidney cells





UniProt accession no.

shipped in

dry ice

storage temp.


Gene Information

human ... TOP1(7150)

General description

Monoclonal Anti-Topoisomerase I (mouse IgG1 isotype) is derived from the Mab1 hybridoma produced by the fusion of SP2/0 mouse myeloma cells and splenocytes from BALB/c mice immunized with human purified topoisomerase I. The protein family of DNA topoisomerases is divided into two types (type I and II). The type I enzymes include eukaryotic and bacterial topoisomerase I and III. Human DNA Topoisomerase I belong to the subtype IB enzymes. The protein has four distinct domains. There are four nuclear localization signals in the N-terminal domain. A linker domain of 77 amino acids follows the core domain. The fourth domain, which is 53 amino acids long, contains the active site Tyr723. Topoisomerase I (TOP1) gene is located on human chromosome 20q12.


purified human topoisomerase I


Monoclonal Anti-Topoisomerase I antibody produced in mouse has been used in western blot analysis.


200 μL in glass bottle

Biochem/physiol Actions

DNA topoisomerases are enzymes that control the amount of supercoiling in DNA. Without topoisomerases, DNA cannot replicate normally. Type I enzymes of DNA topoisomerases introduce transient single strand breaks in DNA. Recently it was reported that DNA topoisomerase I is involved in modulation of RNA and is present in retroviral particles, like human immunodeficiency virus (HIV1). Furthermore, the enzyme enhances HIV-1 cDNA production in reverse transcription assays in vitro. Topoisomerase I (TOP1) serves as swivel at the time of replication, transcription and recombination, which helps in releasing over winding of duplex DNA.

Physical form

Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 15 mM sodium azide.


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.

WGK Germany


Certificado de Análisis
DNA topoisomerase II and its growing repertoire of biological functions
Nitiss JL
Nature Reviews. Cancer, 9(5), 327-327 (2009)
Mechanisms for defining supercoiling set point of DNA gyrase orthologs I. A nonconserved acidic C-terminal tail modulates Escherichia coli gyrase activity
Tretter EM and Berger JM
The Journal of Biological Chemistry, 287(22), 18636-18644 (2012)
Amygdalin inhibits genes related to cell cycle in SNU-C4 human colon cancer cells
Park HJ, et al.
World Journal of Gastroenterology, 11(33), 5156-5156 (2005)
Tanshinone IIA potentiates the efficacy of 5-FU in Colo205 colon cancer cells in vivo through downregulation of P-gp and LC3-II.
Su C C
Experimental and Therapeutic Medicine, 3(3), 555-559 (2012)
Chin-Cheng Su
Experimental and therapeutic medicine, 3(3), 555-559 (2012-09-13)
Traditional Chinese herbal medicines are widely accepted as an option for the treatment of colorectal cancers. Danshen (Salviae miltiorrhizae Radix) is widely prescribed in traditional Chinese medicine for cardiovascular diseases. Tanshinone IIA (Tan-IIA) is extracted from Danshen. Our previous studies...

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