Topoisomerase
Topoisomerases are enzymes that regulate the overwinding or underwinding of DNA. The winding problem of DNA arises due to the intertwined nature of its double-helical structure. Topoisomerases are isomerase enzymes that act on the topology of DNA. Type I topoisomerase cuts one strand of a DNA double helix, relaxation occurs, and then the cut strand is reannealed. Type I topoisomerases are subdivided into two subclasses: type IA topoisomerases, which share many structural and mechanistic features with the type II topoisomerases, and type IB topoisomerases, which utilize a controlled rotary mechanism. Type II topoisomerase cuts both strands of one DNA double helix, pass another unbroken DNA helix through it, and then reanneal the cut strands. This class is also split into two subclasses: type IIA and type IIB topoisomerases, which possess similar structure and mechanisms.
Topoisomerase Isoform Specific Products
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Topoisomerase Inhibitors
(751)
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Topoisomerase Agonists
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Topoisomerase Modulator
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Topoisomerase Inducer
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Topoisomerase Degraders
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Topoisomerase Controls
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Topoisomerase Ligands
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Topoisomerase Proteins
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DNA topoisomerase II Proteins
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Topoisomerase Related Products (827)
Related Products (827)
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Recombinant Proteins (1)
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Antibodies (4)
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Topoisomerase Isoform Comparison
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Berberine-d6 chloride
0 ImagesCat. No.: HY-18258SPurity: 98.71%Synonyms: Natural Yellow 18-d6 chlorideBerberine-d6 (chloride) is the deuterium labeled Berberine chloride. Berberine chloride is an alkaloid that acts as an antibiotic. Berberine chloride induces reactive oxygen species (ROS) generation and inhibits DNA topoisomerase. Antineoplastic properties.
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Val-Ala-PABC-Exatecan trifluoroacetate
0 ImagesVal-Ala-PABC-Exatecan trifluoroacetate is a Drug-Linker Conjugates for ADC, consiting of a cleavable Tesirine linker (Val-Ala-PABC) and Exatecan (topoisomerase I inhibitor, HY-13631). Val-Ala-PABC-Exatecan trifluoroacetate can be used for ADC molecues synthesis, such as Mal-PEGn-amide-va-Exatecan.
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Camptothecin-d5
0 ImagesSynonyms: Campathecin-d5; (S)-(+)-Camptothecin-d5; CPT-d5Camptothecin-d5 is the deuterium labeled Camptothecin. Camptothecin (CPT), a kind of alkaloid, is a DNA topoisomerase I (Topo I) inhibitor with an IC50 of 679 nM. Camptothecin (CPT) exhibits powerful antineoplastic activity against colorectal, breast, lung and ovarian cancers, modulates hypoxia-inducible factor-1α (HIF-1α) activity by changing microRNAs (miRNA) expression patterns in human cancer cells.
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Topotecan-d6
0 ImagesCat. No.: HY-13768S1CAS No.: 1044904-10-0Topotecan-d6 is the deuterium labeled Topotecan. Topotecan (SKF 104864A; NSC 609669) is a Topoisomerase I inhibitor. The IC50 values of Topotecan at 24 h are 2.73±0.25 μM of U251 cells, 2.95±0.23 μM of U87 cells, 5.46±0.41 μM of GSCs-U251 and 5.95 μM of GSCs-U87.
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2-MSP-5-HA-VA-PAB-Exatecan
0 ImagesCat. No.: HY-177879CAS No.: 2878440-72-1
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Topoisomerase II inhibitor 20
0 ImagesCat. No.: HY-158061Purity: 98.44%Topoisomerase II inhibitor 20 (Compound 3e) is a potent topoisomerase II (Topoisomerase II) inhibitor with an IC50 of 0.98 µM. Topoisomerase II inhibitor 20 induces apoptosis and has broad-spectrum anticancer activity.
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NHC-diphosphate triammonium
0 ImagesCat. No.: HY-135867FPurity: 98.80%
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Gly-7-MAD-MDCPT
0 ImagesCat. No.: HY-132164CAS No.: 2378427-68-8Gly-7-MAD-MDCPT (compound 4b) is an anticancer agent. Gly-7-MAD-MDCPT is a Camptothecin (HY-16560) compound, it shows cytotoxicity to various cancer cells with IC50 values of 10-1000 nM.
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NHC-diphosphate
0 ImagesNHC-diphosphate is an active phosphorylated intracellular metabolite of β-d-N4-Hydroxycytidine (NHC) (HY-125033) as a diphosphate form. NHC is a pyrimidine ribonucleoside and behaves as a potent anti-virus agent. NHC effectively inhibits the replication of venezuelan equine encephalitis virus (VEEV), Chikungunya virus (CHIKV) and hepatitis C virus (HCV).
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Tenifatecan
0 ImagesSynonyms: SN2310Tenifatecan (SN2310) is an injectable emulsion composed of vitamin E, a succinate derivative, as well as 7-ethyl-10-hydroxycamptothecin (SN-38, the active metabolite of irinotecan). Tenifatecan (SN2310) possesses anticancer activity.
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IID432
0 ImagesCat. No.: HY-175741CAS No.: 3094992-69-2IID432 is a potent, orally active, and covalent inhibitor of Trypanosoma cruzi topoisomerase II. IID432 shows an EC50 of 8 nM against T. cruzi intracellular amastigotes, exhibits excellent oral bioavailability (52% in rats), favorable ADME properties, and no S1P pathway modulation. IID432 achieves relapse-free cure in a chronic T. cruzi infection mouse model, can be used for the study of Chagas disease.
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ARN21929
0 ImagesARN21929 is a Topoisomerase II inhibitor with an IC50 of 4.5 μM. ARN21929 exhibits excellent kinetic and thermodynamic solubility as well as metabolic stability. However, ARN21929 shows poor antiproliferative activity against A549, DU145, MCF7, HeLa, and A375 cells. ARN21929 can be used in the study of cancer.
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CH-0793076
0 ImagesCat. No.: HY-107096CAS No.: 534605-78-2Synonyms: TP3076CH-0793076 (TP3076), a hexacyclic camptothecin analog, is active drug and major metabolite of TP300. CH-0793076 inhibits DNA topoisomerase I with an IC50 of 2.3 μM. CH-0793076 is efficacious against cells expressing BCRP (breast cancer resistance protein).
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NHC-triphosphate
0 ImagesCat. No.: HY-135867CAS No.: 34973-27-8
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Levofloxacin hydrochloride (Standard)
0 ImagesSynonyms: (-)-Ofloxacin hydrochloride (Standard)Levofloxacin (hydrochloride) (Standard) is the analytical standard of Levofloxacin hydrochloride (HY-B0330B). This product is intended for research and analytical applications. Levofloxacin hydrochloride is an orally active antibiotic. Levofloxacin inhibits DNA gyrase and topoisomerase IV activity, inducing Apoptosis. Levofloxacin hydrochloride has antibacterial activity against both Gram-positive and Gram-negative bacteria. Levofloxacin hydrochloride exhibits anticancer activity against lung cancer. Levofloxacin hydrochloride has anti-acnegenic, anxiogenic, and analgesic effects. Levofloxacin hydrochloride shortens sleep duration in mice. Levofloxacin hydrochloride can be used in the research of infectious diseases (such as tuberculosis, chronic periodontitis, bacterial infections associated with stable COPD, and BK viremia) and lung cancer.
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(4-NH2)-Exatecan-d5
0 ImagesCat. No.: HY-145397SPurity: 98.62%Synonyms: AZ14170132-d5(4-NH2)-Exatecan-d5 is a deuterated labeled (4-NH2)-Exatecan. (4-NH2)-Exatecan (compound A), a topoisomerase inhibitor, is a derivative of Exatecan. (4-NH2)-Exatecan can be used in the synthesis of antibody-drug conjugates (ADCs).
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PY-4Car2
0 ImagesCat. No.: HY-183912CAS No.: 3054643-04-5PY-4Car2 is a Camptothecin (HY-16560) derivative and a topoisomerase I inhibitor. PY-4Car2 functions as a warhead conjugated via a cleavable linker to the bispecific ADC TJ101. PY-4Car2 can be used as an ADC payload for the research of cancers.
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Levofloxacin hydrate (Standard)
0 ImagesSynonyms: Levofloxacin hemihydrate (Standard)Levofloxacin (hydrate) (Standard) is the analytical standard of Levofloxacin (hydrate). This product is intended for research and analytical applications. Levofloxacin hydrate (Levofloxacin hemihydrate) is an orally active antibiotic and is active against both Gram-positive and Gram-negative bacteria. Levofloxacin hydrate inhibits the DNA gyrase and topoisomerase IV. Levofloxacin hydrate can be used for chronic periodontitis, airway inflammation and BK Viremia research. Levofloxacin hydrate shows anti-orthopoxvirus activity.
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Irinotecan hydrochloride trihydrate (Standard)
0 ImagesCat. No.: HY-16568RCAS No.: 136572-09-3Synonyms: (+)-Irinotecan hydrochloride trihydrate (Standard); CPT-11 hydrochloride trihydrate (Standard)Irinotecan (hydrochloride trihydrate) (Standard) is the analytical standard of Irinotecan (hydrochloride trihydrate). This product is intended for research and analytical applications. Irinotecan hydrochloride trihydrate ((+)-Irinotecan hydrochloride trihydrate) is a topoisomerase I inhibitor with antitumor activity.
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Berberine sulfate (Standard)
0 ImagesSynonyms: Natural Yellow 18 sulfate (Standard)Berberine (sulfate) (Standard) is the analytical standard of Berberine (sulfate). This product is intended for research and analytical applications. Berberine sulfate is an alkaloid isolated from the Chinese herbal medicine Huanglian, as an antibiotic. Berberine sulfate induces reactive oxygen species (ROS) generation and inhibits DNA topoisomerase. Berberine sulfate has antineoplastic properties. The sulfate form improves bioavailability[1][2].
