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
(769)
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Topoisomerase Agonists
(2)
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Topoisomerase Modulator
(1)
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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 (847)
Related Products (847)
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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 mesylate hydrate
0 ImagesGepotidacin mesylate hydrate is an orally active triazaacenaphthylene antibiotic and bacterial type II topoisomerase inhibitor. Gepotidacin mesylate hydrate inhibits bacterial DNA replication by blocking topoisomerase enzymes. Gepotidacin mesylate hydrate selectively inhibits topoisomerase IV and the B subunit of DNA gyrase.
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Exatecan Intermediate 7
0 ImagesCat. No.: HY-45157CAS No.: 182182-32-7Exatecan Intermediate 7 is the intermediate of Exatecan (HY-13631) And Exatecan (DX-8951) is a DNA topoisomerase I inhibitor with an IC50 value of 2.2 μM (0.975 μg/mL) that can be used in cancer research. Exatecan Intermediate 7 can be used to synthesize Antibody-Drug Conjugates (ADCs).
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AMT-562
0 ImagesCat. No.: HY-171747Purity: 98.65%AMT-562 is an antibody-drug conjugate (ADC) consisting of a novel anti-HER3 antibody Ab562 (HY-P991505) conjugated to the linker MC-VA-PAB and the topoisomerase I inhibitor Exatecan (HY-13631). The ADC toxic molecule and linker portion are MC-VA-PAB-Exatecan (HY-147270). AMT-562 can induce apoptosis and has antitumor activity against pancreatic, esophageal, and gastric cancers.
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Suramin
0 ImagesSuramin is a reversible and competitive protein-tyrosine phosphatases (PTPases) inhibitor. Suramin is a potent inhibitor of sirtuins: SirT1 (IC50=297 nM), SirT2 (IC50=1.15 μM), and SirT5 (IC50=22 μM). Suramin is a competitive inhibitor of reverse transcriptase (DNA topoisomerase II: IC50=5 μM). Suramin is a potent SARS-CoV-2 RNA-dependent RNA polymerase (RdRp) inhibitor.Suramin efficiently inhibits IP5K and is an antiparasitic, anti-neoplastic and anti-angiogenic agent.
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Sobuzoxane
0 ImagesSynonyms: MST 16Sobuzoxane (MST-16) is an orally active topoisomerase II inhibitor. Sobuzoxane causes irreversible inhibition of cell division. Sobuzoxane can be used in the study of non-Hodgkin's lymphoma that is resistant to conventional chemotherapy or has recurred.
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NHC-triphosphate tetrasodium
0 ImagesCat. No.: HY-135867A
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MC-Gly-Gly-Phe-Gly-(S)-Cyclopropane-Exatecan
0 ImagesMC-Gly-Gly-Phe-Gly-(R)-Cyclopropane-Exatecan is a agent-linker conjugates for ADC, consisting Exatecan (HY-13631). Exatecan is a DNA Topoisomerase I inhibitor (IC50=2.2 μM).
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PNU-142586
0 ImagesCat. No.: HY-123393CAS No.: 368891-70-7PNU-142586 is the major metabolite of Linezolid (HY-10394). PNU-142586 can inhibit the activity of DNA topoisomerase 2-α (TOP2A) and DNA topoisomerase 2-β (TOP2B). PNU-142586 interferes with DNA replication and transcription by blocking the binding of DNA to TOP2 and inhibiting ATP hydrolysis, ultimately leading to antiproliferative and cytotoxic effects, including mitochondrial dysfunction. PNU-142586 can be used to study Linezolid-induced hematotoxicity and its molecular mechanism.
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Razoxane
0 ImagesSynonyms: ICRF 159Razoxane (ICRF 159), a EDTA (HY-Y0682) derivative, is an orally active antiangiogenic topoisomerase II inhibitor. Razoxane has antineoplastic, antiangiogenic, and antimetastatic activities. Razoxanecan be used for the research of renal cell carcinoma (RCC), lung cancer and melanoma cancer.
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DRF-1042
0 ImagesDRF-1042 is an orally active derivative of Camptothecin. DRF-1042 acts to inhibit DNA topoisomerase I. DRF-1042 shows good anticancer activity against a panel of human cancer cell lines including multi-agent resistance (MDR) phenotype.
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Exatecan-methylacetamide-OH
0 ImagesCat. No.: HY-156849CAS No.: 2594423-51-3Exatecan-methylacetamide-OH (compound 6) is a Exatecan derivative with anticancer effects. Exatecan-methylacetamide-OH is an ADC cytotoxin that can be used to synthesize Antibody-Drug Conjugates (ADCs) (CN112125915A; compound 6).
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AQ4
0 ImagesCat. No.: HY-121649CAS No.: 70476-63-0AQ4 is a topoisomerase II inhibitor and DNA intercalator as a chemically stable cytotoxic agent in many human tumor lines.
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Cyclooctyne-O-amido-PEG4-VC-PAB-Gly-Gly-NH-O-CO-Exatecan
0 ImagesCat. No.: HY-157407CAS No.: 2699066-62-9Cyclooctyne-O-amido-PEG4-VC-PAB-Gly-Gly-NH-O-CO-Exatecan is a drug-linker conjugate for ADC (ADC Cytotoxin: Exatecan).
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20-O-Acetylcamptothecin
0 ImagesSynonyms: O-Acetylcamptothecin20-O-Acetylcamptothecin (O-Acetylcamptothecin) is a derivative of Camptothecin (HY-16560) and an inhibitor of Topoisomerase I.
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Exatecan-amide-cyclopropanol
0 ImagesExatecan-amide-cyclopropanol (compound 1) is a anticancer agent. Exatecan-amide-cyclopropanol shows anti-proliferation activity against SK-BR-3 and U87 cells, with IC50 values of 0.12 and 0.23 nM, respectively.
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Topoisomerase II inhibitor 20 TFA
0 ImagesCat. No.: HY-158061ATopoisomerase II inhibitor 20 TFA is a potent topoisomerase II inhibitor with IC50 of 0.98 µM. Topoisomerase II inhibitor 20 TFA can induce apoptosis and has broad-spectrum anticancer activity.
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Deruxtecan-Eribulin
0 ImagesCat. No.: HY-164836Deruxtecan-Eribulin is a Drug-Linker Conjugates for ADC, which is composed of a linker and a toxic molecule Exatecan (HY-13631) (DNA topoisomerase I inhibitor) and Eribulin (HY-13442) (Microtubule inhibitor). Deruxtecan-Eribulin can be used for ADC synthesis.
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Pyrazoloacridine
0 ImagesSynonyms: NSC 366140; PD 115934Pyrazoloacridine (NSC 366140), an intercalating agent with anti-cancer activity, inhibits the activity of topoisomerases 1 and 2. Pyrazoloacridine (NSC 366140) exhibits an IC50 of 1.25 μM in K562 myeloid leukemia cells for 24 h treatment.
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TH1338
0 ImagesTH1338 (compound 3b), an orally active camptothecin derivative and a potent chemotherapeutic agent for cancer, demonstrates excellent cytotoxic potency against human tumor cell lines in vitro. TH1338 (compound 3b) possesses significant brain penetration, favorable efflux pump properties, and hematological toxicity profile.
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Antitumor agent-203
0 ImagesAntitumor agent-203 (例7) is a derivative of Exatecan (DX-8951) (HY-13631) and can be used to prepare antibody-drug conjugates (ADCs), as the ADC Cytotoxin.
