Topoisomerase
Topoisomerases are enzymes that participate in the overwinding or underwinding of DNA. During DNA replication and transcription, DNA becomes overwound ahead of a replication fork. If left unabated, this torsion would eventually stop the ability of DNA or RNA polymerases involved in these processes to continue down the DNA strand.Topoisomerases are isomerase enzymes that act on the topology of DNA.Bacterial topoisomerase and human topoisomerase proceed via the same mechanism for replication and transcription.
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Amonafide能通过拓扑异构酶II介导的反应产生蛋白相关的DNA链断裂，但不产生拓扑异构酶I介导的DNA断裂。
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Ellagic Acid是可通透细胞的酪蛋白激酶2（CK2）抑制剂，Ki为20 nM，是抗氧化剂和抗突变剂。
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Levofloxacin是合成的氟喹诺酮类抗生素，能抑制细菌DNA旋转酶的超螺旋活性，可阻止DNA复制。
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Moxifloxacin Hydrochloride是一种第四代氟喹诺酮类抗生素。
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Beta-Lapachone是一种选择性的DNA topoisomerase I（DNA拓扑异构酶I）抑制剂，对DNA拓扑异构酶II或连接酶无抑制作用。
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