Chemicals and Drugs [D] » Enzymes and Coenzymes [D08] » Enzymes » Isomerases » DNA Topoisomerases » DNA Topoisomerases, Type II » DNA Gyrase
Chemicals and Drugs [D] » Amino Acids, Peptides, and Proteins [D12] » Proteins » Bacterial Proteins » DNA Gyrase
Description
A bacterial DNA topoisomerase II that catalyzes ATP-dependent breakage of both strands of DNA, passage of the unbroken strands through the breaks, and rejoining of the broken strands. Gyrase binds to DNA as a heterotetramer consisting of two A and two B subunits. In the presence of ATP, gyrase is able to convert the relaxed circular DNA duplex into a superhelix. In the absence of ATP, supercoiled DNA is relaxed by DNA gyrase. MeSH
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