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
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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 (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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Alternariol
0 ImagesAlternariol is an orally ingested mycotoxin produced by Alternaria, capable of inhibiting the activity of topoisomerase I and II (topoisomerase I, topoisomerase II). Alternariol has weak estrogenic (Estrogen Receptor/ERR) and androgen/antiandrogen (Androgen Receptor) effects. Alternariol can induce apoptosis, trigger cell cycle arrest, suppress innate immune responses, and exhibit anti-tumor activity. Alternariol has genotoxic, mutagenic, and endocrine-disrupting effects.
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DACA
0 ImagesDACA (XR 5000) is a potential and blood-brain barrier-penetrating topoisomerase I and II inhibitor. DACA can be used in the research of colorectal cancer, leukemia and lung cancer.
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9-Methoxycamptothecin
0 Images9-Methoxycamptothecin (MCPT), isolated from Camptotheca acuminata, has antitumor activities through topoisomerase inhibition. 9-Methoxycamptothecin (MCPT) induces strong G2/M arrest and apoptosis in cancer.
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Isodiospyrin
0 ImagesIsodiospyrin, a natural dimeric naphthoquinone, is a human DNA topoisomerase I (Topoisomerase) inhibitor. Isodiospyrin can prevent both DNA relaxation and kinase activities of human topoisomerase I. Isodiospyrin shows anticancer, antibacterial and antifungal activities.
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Besifloxacin Hydrochloride
0 ImagesBesifloxacin Hydrochloride is a fourth generation fluoroquinolone antibiotic. Besifloxacin Hydrochloride is a DNA gyrase and topoisomerase IV inhibitor. Besifloxacin Hydrochloride has broad-spectrum antibacterial activity, it is effective against Gram-negative and Gram-positive aerobic and anaerobic strains and reduces the incidence of drug resistance. Besifloxacin Hydrochloride has anti-inflammatory activity. Besifloxacin Hydrochloride can be used in bacterial conjunctivitis research.
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7-Ethylcamptothecin
0 Images7-Ethylcamptothecin is a derivative of Camptothecin (HY-16560) and a DNA topoisomerase I inhibitor that exhibits significant antitumor activity against tumor cells. 7-Ethylcamptothecin serves as a key precursor for the synthesis of 20 (S)-O-substituted benzoyl-7-ethylcamptothecin compounds. 7-Ethylcamptothecin is widely used in various tumor-related scientific studies.
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SPR719
0 ImagesSynonyms: VXc-486SPR719 (VXc-486) is an orally active gyrase B inhibitor, with bactericidal activity. SPR719 potently inhibits multiple agent-sensitive isolates and drug-resistant isolates of Mycobacterium tuberculosis, with MICs of 0.03 to 0.30 μg/ml and 0.08 to 5.48 μg/ml, respectively. SPR719 is promising for research of lung disease caused by non-tuberculous mycobacteria (NTM).
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2-Methoxycinnamaldehyde
0 ImagesSynonyms: o-Methoxycinnamaldehyde2-Methoxycinnamaldehyde (o-Methoxycinnamaldehyde) is a natural compound that can be isolated from Cinnamomum cassia. 2-Methoxycinnamaldehyde inhibits topoisomerase-I/II and NF-κB signaling pathway, causes mitochondrial dysfunction, induces lysosomal vesiculation, thereby leading to DNA damage and cell apoptosis. 2-Methoxycinnamaldehyde exhibits antitumor effects.
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F-14512
0 ImagesF-14512 is an anticancer agent that utilizes the polyamine transport system (PTS) to selectively deliver polyamine-containing drugs to cancer cells. F-14512 enhances the affinity of polyamines for DNA, thereby inhibiting topoisomerase II and achieving selective cellular uptake. F-14512 exhibits significant cytotoxicity against cells with high PTS activity and induces DNA damage. F-14512 demonstrates potent antitumor activity in the MX1 breast tumor xenograft model. F-14512 can be used to study breast cancer.
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Q901
0 ImagesCat. No.: HY-153278CAS No.: 2766124-39-2Synonyms: CDK7-IN-21Q901 (CDK7-IN-21) is a selective and potent CDK7 inhibitor with an IC50 of 10 nM. Q901 disrupts MYC and E2FTOP1-DPCs and sensitizes tumor to TOP1 inhibitors by suppressing RNAPII transition from initiation to elongation. Q901 can inhibit tumor growth and significantly enhances tumor growth inhibition combined with TOP1 inhibitors. Q901 can be used for the research of cancer, such as colon cancer and lung cancer.
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MC-GGFG-AM-(10Me-11F-Camptothecin) intermediate-1
0 ImagesCat. No.: HY-400770CAS No.: 1241391-14-9Synonyms: 1-(2-Amino-4-fluoro-5-methylphenyl)-2-chloroethanoneMC-GGFG-AM-(10Me-11F-Camptothecin) intermediate-1 (compound 19-2) is an intermediate for the synthesis of MC-GGFG-AM-(10Me-11F-Camptothecin) (HY-153360). Modifying groups can be added group. MC-GGFG-AM-(10Me-11F-Camptothecin) is a drug-linker conjugate used in the synthesis of ADCs.
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2-MSP-5-HA-GGFG-NH-CH2-O-CH2-CO-Exatecan
0 Images2-MSP-5-HA-GGFG-NH-CH2-O-CH2-CO-Exatecan is a drug-linker conjugates for ADC, consiting of a cleavable linker and Exatecan (HY-13631). 2-MSP-5-HA-GGFG-NH-CH2-O-CH2-CO-Exatecan can be linked to anti-Her3 antibody.
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T638
0 ImagesT638 is a topoisomerase II (TOP2) inhibitor. T638 inhibits TOP2A activity with a IC50 of 0.7 uM. T638 strongly inhibits cancer cell growth.
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Garenoxacin Mesylate hydrate
0 ImagesSynonyms: BMS284756 Mesylate hydrateGarenoxacin (BMS284756) Mesylate hydrate is an orally active quinolone antibiotic and has a broad spectrum of activity against a wide array of gram-positive and gram-negative bacteria, anaerobes, and fastidious organisms.
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LMP744
0 ImagesSynonyms: MJ-III65; NSC706744LMP744 (MJ-III65) is a DNA intercalator and Topoisomerase I (Top1) inhibitor with antitumor activity.
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Voreloxin
0 ImagesSynonyms: SNS-595; Vosaroxin; AG 7352Voreloxin (SNS-595; Vosaroxin; AG 7352) is a first-in-class topoisomerase II inhibitor that intercalates DNA and induces site-selective DNA DSB, G2 arrest, and apoptosis.
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ARN-21934
0 ImagesARN-21934 is a potent, highly selective, blood-brain barrier (BBB) penetrant inhibitor for human topoisomerase II α over β. ARN-21934 inhibits DNA relaxation with an IC50 of 2 μM as compared to the anticancer agent Etoposide (IC50=120 μM). ARN-21934 exhibits a favorable in vivo pharmacokinetic profile and is a promising lead compound for anticancer research.
