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
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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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Gepotidacin
0 ImagesSynonyms: GSK2140944Gepotidacin (GSK2140944) is a novel triazaacenaphthylene bacterial type II topoisomerase inhibitor.
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Teniposide
0 ImagesSynonyms: VM26Teniposide is a podophyllotoxin derivative, acts as a topoisomerase II inhibitor, and used as a chemotherapeutic agent.
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ADC Control Human IgG1-Deruxtecan (DAR 8)
0 ImagesCat. No.: HY-164152APurity: 99.32%ADC Control Human IgG1-Deruxtecan (DAR 8) is a humanized monoclonal antibody that is an isotype control of ADC human IgG1-Deruxtecan and can inhibit DNA topoisomerase I. The antibody portion is Human IgG1 kappa, Isotype Control (HY-P99001), and the drug-linker conjugate for ADC is Deruxtecan (HY-13631E).
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Trovafloxacin
0 ImagesTrovafloxacin is a broad-spectrum quinolone antibiotic with potent activity against Gram-positive, Gram-negative and anaerobic organisms. Trovafloxacin blocks the DNA gyrase and topoisomerase IV activity. Trovafloxacin is also a potent, selective and orally active pannexin 1 channel (PANX1) inhibitor with an IC50 of 4 μM for PANX1 inward current. Trovafloxacin does not inhibit connexin 43 gap junction or PANX2. Trovafloxacin leads to dysregulated fragmentation of apoptotic cells by inhibiting PANX1.
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Daunorubicin
0 ImagesSynonyms: Daunomycin; RP 13057; RubidomycinDaunorubicin (Daunomycin) is a topoisomerase II inhibitor with potent anti-tumor activity. Daunorubicin inhibits DNA and RNA synthesis. Daunorubicin is a cytotoxin that inhibits cancer cell viability and induces apoptosis and necrosis. Daunorubicin is also an anthracycline antibiotic. Daunorubicin can be used in the research of infection and variety of cancers, including leukemia, non-Hodgkin lymphomas, Ewing's sarcoma, Wilms' tumor.
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PNU-159682
0 ImagesPNU-159682, a metabolite of the anthracycline Nemorubicin, is a highly potent DNA topoisomerase II inhibitor with excellent cytotoxicity. PNU-159682 acts as a more potent and tolerated ADC cytotoxin than Doxorubicin for ADC synthesis. PNU-159682 can be used in EDV-nanocell technology to overcome agent resistance.
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MC-VA-PAB-Exatecan
0 ImagesMC-VA-PAB-Exatecan is a agent-linker conjugate for ADC. MC-VA-PAB-Exatecan contains the ADC linker (peptide MC-VA-PAB) and a DNA topoisomerase I inhibitor Exatecan (HY-13631). MC-VA-PAB-Exatecan synthesized ADC shows good antitumor activity.
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Nalidixic acid
0 ImagesNalidixic acid, a quinolone antibiotic, is effective against both gram-positive and gram-negative bacteria. Nalidixic acid acts in a bacteriostatic manner in lower concentrations and is bactericidal in higher concentrations. Nalidixic acid inhibits a subunit of DNA gyrase and topoisomerase IV and reversibly blocks DNA replication in susceptible bacteria.
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Aldoxorubicin
0 ImagesCat. No.: HY-16261CAS No.: 1361644-26-9Synonyms: INNO-206; DOXO-EMCHAldoxorubicin (INNO-206) is an albumin-binding proagent of Doxorubicin (DNA topoisomerase II inhibitor), which is released from albumin under acidic conditions. Aldoxorubicin (INNO-206) has potent antitumor activities in various cancer cell lines and in murine tumor models.
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ADC Control Human IgG1-Deruxtecan (DAR 4)
0 ImagesCat. No.: HY-164152ADC Control Human IgG1-Deruxtecan (DAR 4) is a humanized monoclonal antibody that is an isotype control of ADC human IgG1-Deruxtecan and can inhibit DNA topoisomerase I. The antibody portion is Human IgG1 kappa, Isotype Control (HY-P99001), and the drug-linker conjugate for ADC is Deruxtecan (HY-13631E).
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Irinotecan hydrochloride trihydrate
0 ImagesSynonyms: (+)-Irinotecan hydrochloride trihydrate; CPT-11 hydrochloride trihydrateIrinotecan hydrochloride trihydrate ((+)-Irinotecan hydrochloride trihydrate) is a topoisomerase I inhibitor with antitumor activity.
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Aurintricarboxylic acid
0 ImagesAurintricarboxylic acid is a nanomolar-potency, allosteric antagonist with selectivity towards αβ-methylene-ATP-sensitive P2X1Rs and P2X3Rs, with IC50s of 8.6 nM and 72.9 nM for rP2X1R and rP2X3R, respectively. Aurintricarboxylic acid is a potent anti-influenza agent by directly inhibiting the neuraminidase. Aurintricarboxylic acid is an inhibitor of topoisomerase II and apoptosis. Aurintricarboxylic acid is a selective inhibitor of the TWEAK-Fn14 signaling pathway. Aurintricarboxylic acid also acts as a cystathionine-lyase (CSE) inhibitor with an IC50 of 0.6 μM. Aurintricarboxylic acid is a modifier of miRNAs that regulate miRNA function, with an IC50 of 0.47 µM.
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Aclacinomycin A
0 ImagesCat. No.: HY-N2306CAS No.: 57576-44-0Synonyms: AclarubicinAclacinomycin A (Aclarubicin) is an orally active and potent anthracycline antitumor antibiotic. Aclacinomycin A is an inhibitor of topoisomerase I and II. Aclacinomycin A inhibits synthesis of nucleic acid, especially RNA. Aclacinomycin A might inhibit the 26S protease complex as well as the ubiquitin-ATP-dependent proteolysis.
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Epirubicin
0 ImagesSynonyms: 4'-EpidoxorubicinEpirubicin (4'-Epidoxorubicin), a semisynthetic L-arabino derivative of doxorubicin, has an antineoplastic agent by inhibiting Topoisomerase. Epirubicin inhibits DNA and RNA synthesis. Epirubicin is a Forkhead box protein p3 (Foxp3) inhibitor and inhibits regulatory T cell activity.
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Ciprofloxacin hydrochloride monohydrate
0 ImagesSynonyms: Bay-09867 hydrochloride monohydrateCiprofloxacin (Bay-09867) hydrochloride monohydrate is an orally active, blood-brain barrier permeable fluoroquinolone antibacterial agent. Ciprofloxacin hydrochloride monohydrate exerts bactericidal effects primarily by inhibiting topoisomerase II and IV. Ciprofloxacin hydrochloride monohydrate inhibits the proliferation of human dental pulp stem cells and chondrocytes from young rats, and also activates the Akt signaling pathway and upregulates markers such as β-catenin and Nanog to maintain the morphological characteristics of stem cells. Ciprofloxacin hydrochloride monohydrate induces significant neurotoxicity and tissue damage, including reducing serotonin and glutathione levels in the brain, inducing oxidative stress and depression-like behaviors, and causing articular cartilage damage. Ciprofloxacin hydrochloride monohydrate can be applied to research related to infections of necrotic young permanent teeth and neurotoxicity.
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Gly-Mal-GGFG-Deruxtecan 2-hydroxypropanamide
0 ImagesGly-Mal-GGFG-Deruxtecan 2-hydroxypropanamide is the drug-linker conjugate for ADC, containing ADC linker Gly-Mal-GGFG and ADC cytotoxin Deruxtecan 2-hydroxypropanamide.
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Levofloxacin hydrate
0 ImagesSynonyms: Levofloxacin hemihydrateLevofloxacin 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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Trovafloxacin mesylate
0 ImagesTrovafloxacin mesylate is a broad-spectrum quinolone antibiotic with potent activity against Gram-positive, Gram-negative and anaerobic organisms. Trovafloxacin mesylate blocks the DNA gyrase and topoisomerase IV activity. Trovafloxacin mesylate is also a potent, selective and orally active pannexin 1 channel (PANX1) inhibitor with an IC50 of 4 μM for PANX1 inward current. Trovafloxacin mesylate does not inhibit connexin 43 gap junction or PANX2. Trovafloxacin mesylate leads to dysregulated fragmentation of apoptotic cells by inhibiting PANX1.
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(4-NH2)-Exatecan
0 ImagesSynonyms: AZ14170132(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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(1R,9R)-Exatecan mesylate
0 ImagesSynonyms: (1R,9R)-DX8951f(1R,9R)-Exatecan mesylate ((1R,9R)-DX8951f) is a non-prodrug camptothecin derivative and a potent topoisomerase I inhibitor (IC50=0.975 μg/mL in mice and 0.82 μg/mL in humans). (1R,9R)-Exatecan mesylate blocks enzyme activity and induces apoptosis by stabilizing the enzyme-DNA cleavable complex. (1R,9R)-Exatecan mesylate not only effectively inhibits the proliferation of various malignant tumor cells and tumor growth, but also circumvents P-glycoprotein-mediated multidrug resistance. (1R,9R)-Exatecan mesylate is widely used in preclinical studies of multiple cancers including pancreatic cancer, lung cancer, breast cancer, and leukemia. The low-activity isomer of (1R,9R)-Exatecan mesylate is (1S,9R)-Exatecan mesylate (HY-13631I).
