Catalytic activity:ATP-dependent breakage , passage and rejoining of double-stranded DNA. ,enzyme regulation:Specifically inhibited by the intercalating agent amsacrine. ,Function:Control of topological states of DNA by transient breakage and subsequent rejoining of DNA strands. Topoisomerase II makes double-strand breaks. ,miscellaneous:Eukaryotic topoisomerase I and II can relax both negative and positive supercoils , whereas prokaryotic enzymes relax only negative supercoils. ,PTM:Phosphorylation has no effect on catalytic activity. ,similarity:Belongs to the type II topoisomerase family. ,subcellular location:Generally located in the nucleoplasm. ,subunit:Homodimer. Interacts with COPS5. ,
展开内容