Topoisomerase Assay Kits

Detailed protocols and controlled reagents for topoisomerase kits and related products. Note that enzyme is sold separately, except where otherwise indicated.

Gyrase Assay Kit

The DNA Gyrase Assay Kit will allow one to quantify gyrase activity in a crude mix of other proteins (other topoisomerase enzymes for example). It is ideal for characterizing inhibitors as well.

SKU Product Size Price Buy
TG1003 Gyrase Assay Kit 100 Assays $299.00

Top of page

Human Topoisomerase II Assay Kit

The  Human Topoisomerase II Assay Kit is designed for researchers who wish to measure topo II activity in a crude extract. It is highly specific and can be quantified.

SKU Product Size Price Buy
TG1001-1 Human Topoisomerase II Assay Kit 100 Assays $269.00
TG1001-2 Human Topoisomerase II Assay Kit 250 Assays $379.00

Top of page

Topoisomerase I Assay Kit

The Topoiosomerase I Assay Kit is a specific assay for topo I in a crude mixture of heterologous proteins. It is generally easy to interpret an assay that quantifies topo I activity.

SKU Product Size Price Buy
TG1015-1 Topoisomerase I Assay Kit 100 Assays $249.00
TG1015-2 Topoisomerase I Assay Kit 250 Assays $349.00

Top of page

SDS-K+ Precipitation Kit (in vivo)

Designed for researchers who wish to monitor topoisomerase I or II covalent binding to a DNA target in vitro AND in vivo.

SKU Product Size Price Buy
TG1011-1 SDS-K+ Precipitation Kit (in vivo) 100 Assays $299.00
TG1011-2 SDS-K+ Precipitation Kit (in vivo) 250 Assays $379.00

Top of page

Topoisomerase I In Vivo Link Kit

The Topoisomerase I in vivo Link Kit offers a very powerful method to deduce whether a given drug actually affects its predicted topo target in a given cancer cell in vivo. One can quantify the activity of topoisomerase enzyme in vivo with this kit.

SKU Product Size Price Buy
TG1021 Topoisomerase I In Vivo Link Kit 200 Assays $399.00

Top of page

Topoisomerase II In Vivo Link Kit

The Topoisomerase II in vivo Link Kit provides a very powerful method to deduce whether a given drug actually affects its predicted topo target in a given cancer cell in vivo. One can quantify the activity of topoisomerase in vivo with this kit.

SKU Product Size Price Buy
TG1022 Topoisomerase II In Vivo Link Kit 200 Assays $469.00

Top of page

SDS-K+ Precipitation Kit (in vitro)

Designed for researchers who wish to monitor topoisomerase I or II covalent binding to a DNA target in vitro AND in vivo. 

SKU Product Size Price Buy
TG1010-1 SDS-K+ Precipitation Kit (in vitro) 100 Assays $299.00
TG1010-2 SDS-K+ Precipitation Kit (in vitro) 250 Assays $399.00

Top of page

DNA Intercalator/Unwinding Kit

The DNA Intercalator/Unwinding Kit wil reveal how a particular drug intercalates and unwinds the DNA helix.  

SKU Product Size Price Buy
TG1025 DNA Intercalator/Unwinding Kit 50 Experiments $349.00

Top of page

Gyrase/Relaxed DNA Assay Kit

TopoGEN sells E. coli gyrase along with the relaxed DNA subtrate.  The enzyme is very active and can be purchased in large quantities for screening studies.

SKU Product Size Price Buy
TG2000G-1KIT Gyrase/Relaxed DNA Assay Kit 100 Assays $469.00
TG2000G-3KIT Gyrase/Relaxed DNA Assay Kit 500 Assays $899.00
TG2000G-5KIT Gyrase/Relaxed DNA Assay Kit 1000 Assays $1,399.00
TG2000G-7KIT Gyrase/Relaxed DNA Assay Kit 2000 Assays $1,999.00

Top of page

Topoisomerase Enzymes

Custom-sized quantities of Topoisomerase Enzymes are also available and attractively priced. Please contact TopoGEN for a quote.

Human Topoisomerase II

Purified DNA Topoisomerase II (p170) over expressed and purified to homogeneity to a single band on SDS-PAGE.  Topo II enzyme is highly purified and free of topo I contamination.

SKU Product Size Price Buy
TG2000H-1 Human Topoisomerase II 250 Units $249.00
TG2000H-2 Human Topoisomerase II 500 Units $349.00

Top of page

Mutant Human Topo I

Human Topoisomerase I (mutated active site)

SKU Product Size Price Buy
TG2005H-Y723F Mutant Human Topo I 10 ug $299.00

Top of page

Human Topoisomerase I

Human Topoisomerase I, Recombinant (Wild Type Protein).

SKU Product Size Price Buy
TG2005H-RC1 Human Topoisomerase I 500 Units $249.00

Top of page

E. Coli DNA Gyrase (Type II Topoisomerase)

Bacterial DNA Gyrase (E. coli) Enzyme (Type II Topoisomerase)

SKU Product Size Price Buy
TG2000G-1 E. Coli DNA Gyrase (Type II Topoisomerase) 100 Units $199.00
TG2000G-3 E. Coli DNA Gyrase (Type II Topoisomerase) 500 Units $499.00
TG2000G-5 E. Coli DNA Gyrase (Type II Topoisomerase) 1000 Units $869.00
TG2000G-7 E. Coli DNA Gyrase (Type II Topoisomerase) 2000 Units $1,349.00

Top of page

Topoisomerase IV

Bacterial Topoisomerase IV (E. Coli) Enzyme

SKU Product Size Price Buy
TG2000EC-1 Topoisomerase IV 250 Units $299.00
TG2000EC-3 Topoisomerase IV 500 Units $499.00
TG2000EC-5 Topoisomerase IV 1000 Units $899.00

Top of page

Human Tdp1


Purified Human Tyrosyl DNA Phosphodiesterase (Tdp1)

SKU Product Size Price Buy
TG2004H-1 Human Tdp1 250 Units $299.00
TG2004H-2 Human Tdp1 500 Units $399.00

Top of page

S. Aureus DNA Gyrase

DNA Gyrase (s. aureus) Enzyme

SKU Product Size Price Buy
TG2000GSA-1 S. Aureus DNA Gyrase 100 Units $139.00
TG2000GSA-3 S. Aureus DNA Gyrase 500 Units $499.00
TG2000GSA-5 S. Aureus DNA Gyrase 1000 Units $799.00

Top of page

DNA Substrates

Topoisomerase enzymes are sensitive to DNA quality (for example, heavy metal contamination) and not all DNA preps will support activity. All of our DNA substrates are screened to support topoisomerase (and gyrase) activity. When you do screening assays for DNA cleavages, you must have DNA with minimal contamination of nicked forms. Fortunately, TopoGEN controls plasmid and kDNA stocks for nicked contaminants, so you don’t have to worry about wasting expensive enzymes on inferior DNA substrate.

Kinetoplast DNA (kDNA)

Kinetoplast DNA (catenated): the ideal  topoisomerase II  substrate.

SKU Product Size Price Buy
TG2013-1 Kinetoplast DNA (kDNA) 25ug $199.00
TG2013-2 Kinetoplast DNA (kDNA) 50ug $299.00
TG2013-3 Kinetoplast DNA (kDNA) 250ug $699.00

Top of page

pRYG DNA

pRYG DNA is a plasmid containing multiple clusters of topoisomerase II cleavage sites.

SKU Product Size Price Buy
TG2023-2 pRYG DNA 20 ug $199.00

Top of page

pHOT-1 DNA

pHOT-1 DNA is a high affinity Topoisomerase I cleavage substrate.

SKU Product Size Price Buy
TG2030-2 pHOT-1 DNA 20 ug $199.00

Top of page

Supercoiled pBR322 DNA (modified)

Ideal plasmid for assaying any topoisomerase.

SKU Product Size Price Buy
TG2036-1 Supercoiled pBR322 DNA (modified) 50 ug $229.00
TG2036-2 Supercoiled pBR322 DNA (modified) 250 ug $559.00

Top of page

Relaxed pBR322 DNA

Relaxed pBR322 DNA - an ideal plasmid for assaying supercoiling by DNA gyrase.

SKU Product Size Price Buy
TG2037-1 Relaxed pBR322 DNA 50 ug $249.00
TG2037-2 Relaxed pBR322 DNA 250 ug $599.00

Top of page

Topoisomerase Antibodies

Topoisomerase antibodies certified for use with your topo and chromatin research.

Monoclonal Antibody to Human Topoisomerase II Alpha

Monoclonal Antibody to Human Topoisomerase II Alpha is ideal for western blotting applications or for immunohistochemistry (IHC).  The high temperature unmasking technique is described in our technical literature.

SKU Product Size Price Buy
TG2010-1 Monoclonal Antibody to Human Topoisomerase II Alpha 50 Units $369.00

Top of page

Polyclonal Antibody to Human Topoiosomerase II Beta

Rabbit Polyclonal Antibody  to Human Topoisomerase II Beta.  Directed specifically against the C-terminus of purified topo IIb.  Suitable for Westerns and IHC.

SKU Product Size Price Buy
TG2010-3 Polyclonal Antibody to Human Topoiosomerase II Beta 250 Units $329.00

Top of page

Polyclonal Antibody to Human Topoisomerase III Beta

Polyclonal Antibody to Human Topoisomerase III Beta Antibody prepared against a pool of oligopeptides derived from the carboxy terminal region of human topoisomerase IIIb.  Ideal for Western blotting applications but has not been tested for other applications.

SKU Product Size Price Buy
TG2010-4 Polyclonal Antibody to Human Topoisomerase III Beta 250 Units $329.00

Top of page

Polyclonal Antibody to Human Topoisomerase II Alpha

Polyclonal Antibody to Human Topoisomerase II Alpha (p170) prepared against a 16 residue oligopeptide derived from the carboxy terminal region of human topoisomerase II.  This antibody is ideal for Western blotting, immunofluorescence and immunoprecipitation.

SKU Product Size Price Buy
TG2011-1 Polyclonal Antibody to Human Topoisomerase II Alpha 250 Units $329.00

Top of page

Polyclonal Antibody to Human Topoiosomerase I (Scleroderma Patient Serum)

Hight Titer Polyclonal Antibody Directed Against Human Topoisomerase I

SKU Product Size Price Buy
TG2012 Polyclonal Antibody to Human Topoiosomerase I (Scleroderma Patient Serum) 500 Units $299.00

Top of page

Polyclonal to Human Topoisomerase I (serum)

Polyclonal Antibody to Human Topo I (Non-Affinity Purified)

SKU Product Size Price Buy
TG2012-2 Polyclonal to Human Topoisomerase I (serum) 250 ul $229.00

Top of page

Monoclonal to Human Topoisomerase I

Monoclonal Antibody Optimized for Western Blotting Applications

SKU Product Size Price Buy
TG2012-4 Monoclonal to Human Topoisomerase I 100 ug $299.00

Top of page

Polyclonal to Yeast Topoisomerase II (Serum)

Polyclonal Antibody to Yeast Topo II (Non-Affinity Purified)

SKU Product Size Price Buy
TG2014 Polyclonal to Yeast Topoisomerase II (Serum) 250 ul $299.00

Top of page

Monoclonal to Human Topoisomerase III Alpha

Monoclonal antibody raised against purified recombinant protein and specific for the C-terminal region (residues 748-976) of human topo IIIa.

SKU Product Size Price Buy
TG2015 Monoclonal to Human Topoisomerase III Alpha 50 ul $299.00

Top of page

Polyclonal to Human Tdp1

Rabbit polyclonal antibody prepared against the native Tdp1 protein.

SKU Product Size Price Buy
TG2016 Polyclonal to Human Tdp1 250 Units $329.00

Top of page

Topoisomerase II Alpha C-Terminal Peptide

16 Residue Peptide (p170) Purified C-Terminal

SKU Product Size Price Buy
TG2011-2 Topoisomerase II Alpha C-Terminal Peptide 50 ug $179.00

Top of page

Inhibitors and Poisons

Catalytic inhibitors and poisons that induce cleavage. For use in TopoGEN kits.

Topotecan Hydrochloride (Hycamtin)

Topotecan is a semi-synthetic derivative of camptothecin and anti-tumor drug that targets topo I.  As a topo I poison it induces cleavage complexes.

SKU Product Size Price Buy
TG4100 Topotecan Hydrochloride (Hycamtin) 0.25 ml $199.00

Top of page

Irinotecan (CPT-11)

Water soluble, semi-synthetic analogue of 20(S) camptothecin (CPT) with promising activity against a range of tumor types.

SKU Product Size Price Buy
TG4101 Irinotecan (CPT-11) 0.25 ml $109.00

Top of page

9-Nitro-20 (S) Camptothecin (Rubitecan)

Rubitecan (9-nitro-CPT) is a control poison/inhibitor of topo I with promising activity against a range of tumor types.

SKU Product Size Price Buy
TG4102 9-Nitro-20 (S) Camptothecin (Rubitecan) 0.25ml $109.00

Top of page

10-Hydroxy Camptothecin

A control poison/inhibitor of topo I with promising activity against a range of tumor types.

SKU Product Size Price Buy
TG4103 10-Hydroxy Camptothecin 0.25 ml $109.00

Top of page

9-Amino Camptothecin

This is an analog of camptothecin showing promising activity against a range of tumor types.  It is provided as a control poison/inhibitor of topo I.

SKU Product Size Price Buy
TG4104 9-Amino Camptothecin 0.25 ml $109.00

Top of page

Camptothecin

This topo I poison both inhibits enzyme activity and stabilizes formation of topo I cleavage complexes.

SKU Product Size Price Buy
TG4110 Camptothecin Lyophilized $99.00

Top of page

Doxorubicin (Adriacin)

Doxorubicin (Adriacin) is a control poison/inhibitor of topo II. 

SKU Product Size Price Buy
TG4120 Doxorubicin (Adriacin) 0.25 ml $109.00

Top of page

Daunomycin

This is a control poison/inhibitor of topo II.

SKU Product Size Price Buy
TG4130 Daunomycin 0.25 ml $99.00

Top of page

Etoposide (VP16)

This is a control poison/inhibitor of topo II.  It is also included in the topo II drug screening kit.

SKU Product Size Price Buy
TG4140 Etoposide (VP16) Lyophilized $99.00

Top of page

Ellipticine

Ellipticine is a topo II poison that induces topo II dependent cleavages. 

SKU Product Size Price Buy
TG4170 Ellipticine 0.25 ml $99.00

Top of page

Ciproflaxin

A control poison/inhibitor of DNA Gyrase and Topo IV.  This is also included in the Topo IV/Gyrase Drug Screening Kits. 

SKU Product Size Price Buy
TG4180 Ciproflaxin 50 ul $69.00

Top of page

Amsacrine (m-AMSA)

This is a control poison/inhibitor of topoisomerase II.

SKU Product Size Price Buy
TG4150 Amsacrine (m-AMSA) 0.25 ml $99.00

Top of page

Genistein

Isoflavone and inhibitor of tyrosine protein kinases reported to induce topo II dependent cleavages.

SKU Product Size Price Buy
TG4160 Genistein 0.25 ml $99.00

Top of page

Protein MW Markers

Molecular weight markers for proteins - available from TopoGEN.

Human Topoisomerase II Alpha

Purified p170 kDa Sufficient for 20 Gel Loads

SKU Product Size Price Buy
TG2011-3 Human Topoisomerase II Alpha 20 Units $199.00

Top of page

Topoisomerase I Western Blot

Western Blot Marker Set for Topo I

SKU Product Size Price Buy
TG2011-4 Topoisomerase I Western Blot 20 Units $169.00

Top of page

Protocols/Reference

A two volume set of experimental protocols is available from Humana. These protocols are a must for any lab involved in topoisomerase related research. If your lab is already established or if you are just getting set up, these books provide new, incoming students and post-docs a thorough and complete resource for any topo-based procedure. A must for every lab in the field.

DNA Topoisomerase Protocols Volume I

DNA Topoisomerase Protocols Volume I

DNA Topology and Enzymes

Eds. M.Bjornsti and N.Osheroff

Humana Press

SKU Product Size Price Buy
TGVI DNA Topoisomerase Protocols Volume I N/A $129.00

Top of page

DNA Topoisomerase Protocols Volume II

DNA Topoisomerase Protocols Volume II

Enzymology and Drugs

Eds. M.Bjornsti and N.Osheroff

Humana Press

SKU Product Size Price Buy
TGVII DNA Topoisomerase Protocols Volume II N/A $129.00

Top of page

Kit Replenishments

Buffers and reagents for use in TopoGEN kits.

10X Topoisomerase I Assay Buffer

10X Topo I Assay Buffer (TGS).  The buffer is optimized and tested for relaxation and cleavages by topo I.

SKU Product Size Price Buy
TG4010 10X Topoisomerase I Assay Buffer 1 ml $49.00

Top of page

5X Gyrase Assay Buffer

DNA gyrase buffer supplied as a 5X stock solution.  The buffer is optimized and tested for E. coli DNA gyrase.

SKU Product Size Price Buy
TG4030 5X Gyrase Assay Buffer 1 ml $49.00

Top of page

10X Topoisomerase IV Assay Buffer

Topo IV Assay Buffer is supplied as a 10x Stock solution in two parts that must be mixed prior to use.  The complete Topo IV Assay Buffer (A+B) is optimized and tested for decatenation and relaxation activity of E. coli topo IV.

SKU Product Size Price Buy
TG4032 10X Topoisomerase IV Assay Buffer 1 ml (A), 100 ul (B) $49.00

Top of page

5X Universal Stop Buffer

5X Stop Buffer used to terminate topoisomerase reactions.

SKU Product Size Price Buy
TG4037 5X Universal Stop Buffer 1 ml $49.00

Top of page

10X Gel Loading Buffer

Agarose Gel Loading Buffer (10X)

SKU Product Size Price Buy
TG4038 10X Gel Loading Buffer 1 ml $49.00

Top of page

10X Proteinase K

Proteinase K is a subtilisin-like endolytic protease that is isolated from the saprophytic fungus Tritirachium album.  It has a high activity that is stable across a wide range of pH and temperature conditions and is suited to short digestion t

SKU Product Size Price Buy
TG4039 10X Proteinase K 0.5ml $49.00

Top of page

Incomplete Topoisomerase II Assay Buffer

Topo II assay buffer is supplied as a 10X stock solution in two parts (A+B) that must be mixed prior to use.  The 5X Complete Topo II Assay Buffer is optimized and tested for decatenation and relaxation activity of eukaryotic topo II.

SKU Product Size Price Buy
TG4040 Incomplete Topoisomerase II Assay Buffer 1 ml (A), 1 ml (B) $49.00

Top of page

10% Sodium Dodecyl Sulfate

High purity SDS is dissolved in triple glass distilled/deionized, sterile water to 10% (w/v).

SKU Product Size Price Buy
TG4060 10% Sodium Dodecyl Sulfate 1 ml $49.00

Top of page

Sarkosyl (20%)

20% Sarkosyl

SKU Product Size Price Buy
TG4065 Sarkosyl (20%) 5 ml $99.00

Top of page

Topoisomerase II Dilution Buffer

Topo II Dilution Buffer (1X).  Optimized and tested for use as a diluent for TopoGEN's type II topoisomerase.

SKU Product Size Price Buy
TG4090 Topoisomerase II Dilution Buffer 1 ml $49.00

Top of page

Topoisomerase I Dilution Buffer

Topo I Dilution Buffer (1X).  Optimized and tested for use as a diluent for recombinant human topo I enzyme from TopoGEN.

SKU Product Size Price Buy
TG4095 Topoisomerase I Dilution Buffer 1 ml $49.00

Top of page

DNA Molecular Weight Markers

DNA molecular weight markers for agarose gels. For use in TopoGEN kits.

Linear kDNA

Linear Kinetoplast DNA Marker

SKU Product Size Price Buy
TG2017-1 Linear kDNA 10 ug $169.00

Top of page

Decatenated kDNA

Decatenated Kinetoplast DNA Marker

SKU Product Size Price Buy
TG2020-1 Decatenated kDNA 10 ug $189.00

Top of page

Linear pRYG DNA

Linear pRYG DNA Marker

SKU Product Size Price Buy
TG2028-1 Linear pRYG DNA 10 ug $109.00

Top of page

Relaxed pRYG DNA

Relaxed pRYG DNA Marker

SKU Product Size Price Buy
TG2025-1 Relaxed pRYG DNA 10 ug $149.00

Top of page

Relaxed pHOT-1 DNA

Relaxed pHOT-1 DNA Marker

SKU Product Size Price Buy
TG2035-1 Relaxed pHOT-1 DNA 10 ug $129.00

Top of page

Drug Screening Kits

Drug Screening Kits to demonstrate how a novel compound affects topoisomerase action from a mechanistic standpoint. Detailed protocols and all necessary controlled reagents are included. Note that enzyme is sold separately.

Topoisomerase IV Drug Screening Kit

The Topoisomerase IV Drug Screeing Kit is designed for researchers who wish to measure the realease of topoisomerase from covalent complexes that form as a result of drug treatment.  It is highly specific and can be quantified.

SKU Product Size Price Buy
TG1007 Topoisomerase IV Drug Screening Kit 100 Assays $239.00

Top of page

Topoisomerase II Drug Screening Kit

The Topoisomerase II Drug Screening Kit will help you interpret how a novel drug affects topo II action.

SKU Product Size Price Buy
TG1009-1 Topoisomerase II Drug Screening Kit 100 Assays $269.00
TG1009-2 Topoisomerase II Drug Screening Kit 250 Assays $379.00

Top of page

Topoisomerase I Drug Screening Kit

The Topoisomerase I Drug Screening Kit allows the researcher to model drug action with novel topo I active agents. For example, is it a poison or an inhibitor?

SKU Product Size Price Buy
TG1018-1 Topoisomerase I Drug Screening Kit 100 Assays $269.00
TG1018-2 Topoisomerase I Drug Screening Kit 250 Assays $369.00

Top of page

Antibody Kits

Topoisomerase Antibody-based kits available from TopoGEN.

Topoisomerase II Immunoflourescence Kit

Cytologically track topo II in cells with the Topoisomerase II Immunoflourescence Kit. Controls are included along with detailed documentation on use of TopoGEN antibodies.

SKU Product Size Price Buy
TG1030 Topoisomerase II Immunoflourescence Kit 50 Analyses $399.00

Top of page

Topoisomerase II Immunoprecipitation Kit

Those interested in protein/protein interactions will find the Topoisomerase II Immunoprecipitation Kit useful. 

SKU Product Size Price Buy
TG1035 Topoisomerase II Immunoprecipitation Kit 50 Analyses $399.00

Top of page

Tdp1 Products

Tdp1 and related products available from TopoGEN.

Tdp1 Assay Kit

The Tdp1 Assay kit is designed for researchers who wish to measure the release of topoisomerase from covalent complexes that form as a result of drug treatment. It is highly specific and can be quantified.

SKU Product Size Price Buy
TG1004-1 Tdp1 Assay Kit 100 Assays $249.00
TG1004-2 Tdp1 Assay Kit 250 Assays $349.00

Top of page